CentOS Linux 8.5 主机上存在安装的程序包，该程序包受到 TuxCare CENTOS8.5：CLSA-2026：U 1771077729公告中提及的多个漏洞的影响。

  - 已修复 Linux 内核中的下列漏洞：pid: take a reference when initializing `cad_pid` During boot, kernel_init_freeable() initializes `cad_pid` to the init task's struct pid. Later on, we may change `cad_pid` via a sysctl, and when this happens proc_do_cad_pid() will increment the refcount on the new pid via get_pid(), and will decrement the refcount on the old pid via put_pid(). As we never called get_pid() when we initialized `cad_pid`, we decrement a reference we never incremented, can therefore free the init task's struct pid early. As there can be dangling references to the struct pid, we can later encounter a use-after-free (e.g. when delivering signals). This was spotted when fuzzing v5.13-rc3 with Syzkaller, but seems to have been around since the conversion of `cad_pid` to struct pid in commit 9ec52099e4b8 ([PATCH] replace cad_pid by a struct pid) from the pre-KASAN stone age of v2.6.19. Fix this by getting a reference to the init task's struct pid when we assign it to `cad_pid`.
    Full KASAN splat below. ================================================================== BUG: KASAN:
    use-after-free in ns_of_pid include/linux/pid.h:153 [inline] BUG: KASAN: use-after-free in task_active_pid_ns+0xc0/0xc8 kernel/pid.c:509 Read of size 4 at addr ffff23794dda0004 by task syz-executor.0/273 CPU: 1 PID: 273 Comm: syz-executor.0 Not tainted 5.12.0-00001-g9aef892b2d15 #1 Hardware name: linux,dummy-virt (DT) Call trace: ns_of_pid include/linux/pid.h:153 [inline] task_active_pid_ns+0xc0/0xc8 kernel/pid.c:509 do_notify_parent+0x308/0xe60 kernel/signal.c:1950 exit_notify kernel/exit.c:682 [inline] do_exit+0x2334/0x2bd0 kernel/exit.c:845 do_group_exit+0x108/0x2c8 kernel/exit.c:922 get_signal+0x4e4/0x2a88 kernel/signal.c:2781 do_signal arch/arm64/kernel/signal.c:882 [inline] do_notify_resume+0x300/0x970 arch/arm64/kernel/signal.c:936 work_pending+0xc/0x2dc Allocated by task 0: slab_post_alloc_hook+0x50/0x5c0 mm/slab.h:516 slab_alloc_node mm/slub.c:2907 [inline] slab_alloc mm/slub.c:2915 [inline] kmem_cache_alloc+0x1f4/0x4c0 mm/slub.c:2920 alloc_pid+0xdc/0xc00 kernel/pid.c:180 copy_process+0x2794/0x5e18 kernel/fork.c:2129 kernel_clone+0x194/0x13c8 kernel/fork.c:2500 kernel_thread+0xd4/0x110 kernel/fork.c:2552 rest_init+0x44/0x4a0 init/main.c:687 arch_call_rest_init+0x1c/0x28 start_kernel+0x520/0x554 init/main.c:1064 0x0 Freed by task 270:
    slab_free_hook mm/slub.c:1562 [inline] slab_free_freelist_hook+0x98/0x260 mm/slub.c:1600 slab_free mm/slub.c:3161 [inline] kmem_cache_free+0x224/0x8e0 mm/slub.c:3177 put_pid.part.4+0xe0/0x1a8 kernel/pid.c:114 put_pid+0x30/0x48 kernel/pid.c:109 proc_do_cad_pid+0x190/0x1b0 kernel/sysctl.c:1401 proc_sys_call_handler+0x338/0x4b0 fs/proc/proc_sysctl.c:591 proc_sys_write+0x34/0x48 fs/proc/proc_sysctl.c:617 call_write_iter include/linux/fs.h:1977 [inline] new_sync_write+0x3ac/0x510 fs/read_write.c:518 vfs_write fs/read_write.c:605 [inline] vfs_write+0x9c4/0x1018 fs/read_write.c:585 ksys_write+0x124/0x240 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __arm64_sys_write+0x78/0xb0 fs/read_write.c:667 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall arch/arm64/kernel/syscall.c:49 [inline] el0_svc_common.constprop.1+0x16c/0x388 arch/arm64/kernel/syscall.c:129 do_el0_svc+0xf8/0x150 arch/arm64/kernel/syscall.c:168 el0_svc+0x28/0x38 arch/arm64/kernel/entry-common.c:416 el0_sync_handler+0x134/0x180 arch/arm64/kernel/entry-common.c:432 el0_sync+0x154/0x180 arch/arm64/kernel/entry.S:701 The buggy address belongs to the object at ffff23794dda0000 which belongs to the cache pid of size 224 The buggy address is located 4 bytes inside of 224-byte region [ff
    ---truncated--- (CVE-2021-47118)

  - 已修复 Linux 内核中的下列漏洞：i2c: i801: Don't generate an interrupt on bus reset Now that the i2c-i801 driver supports interrupts, setting the KILL bit in a attempt to recover from a timed out transaction triggers an interrupt. Unfortunately, the interrupt handler (i801_isr) is not prepared for this situation and will try to process the interrupt as if it was signaling the end of a successful transaction. In the case of a block transaction, this can result in an out-of-range memory access. This condition was reproduced several times by syzbot:
    https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e https://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a https://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79 So disable interrupts while trying to reset the bus. Interrupts will be enabled again for the following transaction. (CVE-2021-47153)

  - 已修复 Linux 内核中的下列漏洞：scsi: target: Fix WRITE_SAME No Data Buffer crash In newer version of the SBC specs, we have a NDOB bit that indicates there is no data buffer that gets written out. If this bit is set using commands like sg_write_same --ndob we will crash in target_core_iblock/file's execute_write_same handlers when we go to access the se_cmd->t_data_sg because its NULL. This patch adds a check for the NDOB bit in the common WRITE SAME code because we don't support it. And, it adds a check for zero SG elements in each handler in case the initiator tries to send a normal WRITE SAME with no data buffer. (CVE-2022-21546)

  - 已修复 Linux 内核中的下列漏洞：net/mlx5e: IPoIB, Block PKEY interfaces with less rx queues than parent A user is able to configure an arbitrary number of rx queues when creating an interface via netlink. This doesn't work for child PKEY interfaces because the child interface uses the parent receive channels. Although the child shares the parent's receive channels, the number of rx queues is important for the channel_stats array: the parent's rx channel index is used to access the child's channel_stats. So the array has to be at least as large as the parent's rx queue size for the counting to work correctly and to prevent out of bound accesses. This patch checks for the mentioned scenario and returns an error when trying to create the interface. The error is propagated to the user. (CVE-2022-48883)

  - 已修复 Linux 内核中的下列漏洞：be2net: Fix buffer overflow in be_get_module_eeprom be_cmd_read_port_transceiver_data assumes that it is given a buffer that is at least PAGE_DATA_LEN long, or twice that if the module supports SFF 8472. However, this is not always the case.
    Fix this by passing the desired offset and length to be_cmd_read_port_transceiver_data so that we only copy the bytes once. (CVE-2022-49581)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 已修复 Linux 内核中的下列漏洞：drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes [WHY] When PTEBufferSizeInRequests is zero, UBSAN reports the following warning because dml_log2 returns an unexpected negative value: shift exponent 4294966273 is too large for 32-bit type 'int' [HOW] In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and assign the result directly. (CVE-2023-53077)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

AlmaLinux 9.2 主机上存在安装的程序包，该程序包受到 TuxCare ALMALINUX9.2：CLSA-2025：2025：1765463110公告中提及的多个漏洞的影响。

  - 已修复 Linux 内核中的下列漏洞：KVM: Reject attempts to consume or refresh inactive gfn_to_pfn_cache Reject kvm_gpc_check() and kvm_gpc_refresh() if the cache is inactive.
    Not checking the active flag during refresh is particularly egregious, as KVM can end up with a valid, inactive cache, which can lead to a variety of use-after-free bugs, e.g. consuming a NULL kernel pointer or missing an mmu_notifier invalidation due to the cache not being on the list of gfns to invalidate.
    Note, active needs to be set if and only if the cache is on the list of caches, i.e. is reachable via mmu_notifier events. If a relevant mmu_notifier event occurs while the cache is active but not on the list, KVM will not acquire the cache's lock and so will not serailize the mmu_notifier event with active users and/or kvm_gpc_refresh(). A race between KVM_XEN_ATTR_TYPE_SHARED_INFO and KVM_XEN_HVM_EVTCHN_SEND can be exploited to trigger the bug. 1. Deactivate shinfo cache: kvm_xen_hvm_set_attr case KVM_XEN_ATTR_TYPE_SHARED_INFO kvm_gpc_deactivate kvm_gpc_unmap gpc->valid = false gpc->khva = NULL gpc->active = false Result: active = false, valid = false 2. Cause cache refresh: kvm_arch_vm_ioctl case KVM_XEN_HVM_EVTCHN_SEND kvm_xen_hvm_evtchn_send kvm_xen_set_evtchn kvm_xen_set_evtchn_fast kvm_gpc_check return -EWOULDBLOCK because !gpc->valid kvm_xen_set_evtchn_fast return -EWOULDBLOCK kvm_gpc_refresh hva_to_pfn_retry gpc->valid = true gpc->khva = not NULL Result: active = false, valid = true 3. Race ioctl KVM_XEN_HVM_EVTCHN_SEND against ioctl KVM_XEN_ATTR_TYPE_SHARED_INFO: kvm_arch_vm_ioctl case KVM_XEN_HVM_EVTCHN_SEND kvm_xen_hvm_evtchn_send kvm_xen_set_evtchn kvm_xen_set_evtchn_fast read_lock gpc->lock kvm_xen_hvm_set_attr case KVM_XEN_ATTR_TYPE_SHARED_INFO mutex_lock kvm->lock kvm_xen_shared_info_init kvm_gpc_activate gpc->khva = NULL kvm_gpc_check [ Check passes because gpc->valid is still true, even though gpc->khva is already NULL. ] shinfo = gpc->khva pending_bits = shinfo->evtchn_pending CRASH: test_and_set_bit(..., pending_bits) (CVE-2022-49882)

  - 已修复 Linux 内核中的下列漏洞：coresight: Clear the connection field properly coresight devices track their connections (output connections) and hold a reference to the fwnode. When a device goes away, we walk through the devices on the coresight bus and make sure that the references are dropped. This happens both ways: a) For all output connections from the device, drop the reference to the target device via coresight_release_platform_data() b) Iterate over all the devices on the coresight bus and drop the reference to fwnode if *this* device is the target of the output connection, via coresight_remove_conns()->coresight_remove_match(). However, the coresight_remove_match() doesn't clear the fwnode field, after dropping the reference, this causes use-after-free and additional refcount drops on the fwnode. e.g., if we have two devices, A and B, with a connection, A -> B. If we remove B first, B would clear the reference on B, from A via coresight_remove_match(). But when A is removed, it still has a connection with fwnode still pointing to B. Thus it tries to drops the reference in coresight_release_platform_data(), raising the bells like : [ 91.990153] ------------[ cut here]------------ [ 91.990163] refcount_t: addition on 0; use-after-free. [ 91.990212] WARNING: CPU: 0 PID:
    461 at lib/refcount.c:25 refcount_warn_saturate+0xa0/0x144 [ 91.990260] Modules linked in:
    coresight_funnel coresight_replicator coresight_etm4x(-) crct10dif_ce coresight ip_tables x_tables ipv6 [last unloaded: coresight_cpu_debug] [ 91.990398] CPU: 0 PID: 461 Comm: rmmod Tainted: G W T 5.19.0-rc2+ #53 [ 91.990418] Hardware name: ARM LTD ARM Juno Development Platform/ARM Juno Development Platform, BIOS EDK II Feb 1 2019 [ 91.990434] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [91.990454] pc : refcount_warn_saturate+0xa0/0x144 [ 91.990476] lr : refcount_warn_saturate+0xa0/0x144 [91.990496] sp : ffff80000c843640 [ 91.990509] x29: ffff80000c843640 x28: ffff800009957c28 x27:
    ffff80000c8439a8 [ 91.990560] x26: ffff00097eff1990 x25: ffff8000092b6ad8 x24: ffff00097eff19a8 [91.990610] x23: ffff80000c8439a8 x22: 0000000000000000 x21: ffff80000c8439c2 [ 91.990659] x20:
    0000000000000000 x19: ffff00097eff1a10 x18: ffff80000ab99c40 [ 91.990708] x17: 0000000000000000 x16:
    0000000000000000 x15: ffff80000abf6fa0 [ 91.990756] x14: 000000000000001d x13: 0a2e656572662d72 x12:
    657466612d657375 [ 91.990805] x11: 203b30206e6f206e x10: 6f69746964646120 x9 : ffff8000081aba28 [91.990854] x8 : 206e6f206e6f6974 x7 : 69646461203a745f x6 : 746e756f63666572 [ 91.990903] x5 :
    ffff00097648ec58 x4 : 0000000000000000 x3 : 0000000000000027 [ 91.990952] x2 : 0000000000000000 x1 :
    0000000000000000 x0 : ffff00080260ba00 [ 91.991000] Call trace: [ 91.991012] refcount_warn_saturate+0xa0/0x144 [ 91.991034] kobject_get+0xac/0xb0 [ 91.991055] of_node_get+0x2c/0x40 [91.991076] of_fwnode_get+0x40/0x60 [ 91.991094] fwnode_handle_get+0x3c/0x60 [ 91.991116] fwnode_get_nth_parent+0xf4/0x110 [ 91.991137] fwnode_full_name_string+0x48/0xc0 [ 91.991158] device_node_string+0x41c/0x530 [ 91.991178] pointer+0x320/0x3ec [ 91.991198] vsnprintf+0x23c/0x750 [91.991217] vprintk_store+0x104/0x4b0 [ 91.991238] vprintk_emit+0x8c/0x360 [ 91.991257] vprintk_default+0x44/0x50 [ 91.991276] vprintk+0xcc/0xf0 [ 91.991295] _printk+0x68/0x90 [ 91.991315] of_node_release+0x13c/0x14c [ 91.991334] kobject_put+0x98/0x114 [ 91.991354] of_node_put+0x24/0x34 [91.991372] of_fwnode_put+0x40/0x5c [ 91.991390] fwnode_handle_put+0x38/0x50 [ 91.991411] coresight_release_platform_data+0x74/0xb0 [coresight] [ 91.991472] coresight_unregister+0x64/0xcc [coresight] [ 91.991525] etm4_remove_dev+0x64/0x78 [coresight_etm4x] [ 91.991563] etm4_remove_amba+0x1c/0x2c [coresight_etm4x] [ 91.991598] amba_remove+0x3c/0x19c ---truncated--- (CVE-2022-50214)

  - 已修复 Linux 内核中的下列漏洞：wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds() This patch fixes a stack-out-of-bounds read in brcmfmac that occurs when 'buf' that is not null-terminated is passed as an argument of strsep() in brcmf_c_preinit_dcmds(). This buffer is filled with a firmware version string by memcpy() in brcmf_fil_iovar_data_get(). The patch ensures buf is null-terminated. Found by a modified version of syzkaller. [ 47.569679][ T1897] brcmfmac: brcmf_fw_alloc_request: using brcm/brcmfmac43236b for chip BCM43236/3 [ 47.582839][ T1897] brcmfmac: brcmf_c_process_clm_blob: no clm_blob available (err=-2), device may have limited channels available [ 47.601565][ T1897] ================================================================== [ 47.602574][ T1897] BUG: KASAN: stack-out-of-bounds in strsep+0x1b2/0x1f0 [ 47.603447][ T1897] Read of size 1 at addr ffffc90001f6f000 by task kworker/0:2/1897 [ 47.604336][ T1897] [ 47.604621][ T1897] CPU: 0 PID: 1897 Comm: kworker/0:2 Tainted: G O 5.14.0+ #131 [ 47.605617][ T1897] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 47.606907][ T1897] Workqueue: usb_hub_wq hub_event [ 47.607453][ T1897] Call Trace: [ 47.607801][ T1897] dump_stack_lvl+0x8e/0xd1 [ 47.608295][T1897] print_address_description.constprop.0.cold+0xf/0x334 [ 47.609009][ T1897] ? strsep+0x1b2/0x1f0 [47.609434][ T1897] ? strsep+0x1b2/0x1f0 [ 47.609863][ T1897] kasan_report.cold+0x83/0xdf [ 47.610366][T1897] ? strsep+0x1b2/0x1f0 [ 47.610882][ T1897] strsep+0x1b2/0x1f0 [ 47.611300][ T1897] ? brcmf_fil_iovar_data_get+0x3a/0xf0 [ 47.611883][ T1897] brcmf_c_preinit_dcmds+0x995/0xc40 [ 47.612434][T1897] ? brcmf_c_set_joinpref_default+0x100/0x100 [ 47.613078][ T1897] ? rcu_read_lock_sched_held+0xa1/0xd0 [ 47.613662][ T1897] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 47.614208][T1897] ? lock_acquire+0x19d/0x4e0 [ 47.614704][ T1897] ? find_held_lock+0x2d/0x110 [ 47.615236][ T1897] ? brcmf_usb_deq+0x1a7/0x260 [ 47.615741][ T1897] ? brcmf_usb_rx_fill_all+0x5a/0xf0 [ 47.616288][ T1897] brcmf_attach+0x246/0xd40 [ 47.616758][ T1897] ? wiphy_new_nm+0x1703/0x1dd0 [ 47.617280][ T1897] ? kmemdup+0x43/0x50 [ 47.617720][ T1897] brcmf_usb_probe+0x12de/0x1690 [ 47.618244][ T1897] ? brcmf_usbdev_qinit.constprop.0+0x470/0x470 [ 47.618901][ T1897] usb_probe_interface+0x2aa/0x760 [47.619429][ T1897] ? usb_probe_device+0x250/0x250 [ 47.619950][ T1897] really_probe+0x205/0xb70 [47.620435][ T1897] ? driver_allows_async_probing+0x130/0x130 [ 47.621048][ T1897]
    __driver_probe_device+0x311/0x4b0 [ 47.621595][ T1897] ? driver_allows_async_probing+0x130/0x130 [47.622209][ T1897] driver_probe_device+0x4e/0x150 [ 47.622739][ T1897] __device_attach_driver+0x1cc/0x2a0 [ 47.623287][ T1897] bus_for_each_drv+0x156/0x1d0 [ 47.623796][ T1897] ? bus_rescan_devices+0x30/0x30 [47.624309][ T1897] ? lockdep_hardirqs_on_prepare+0x273/0x3e0 [ 47.624907][ T1897] ? trace_hardirqs_on+0x46/0x160 [ 47.625437][ T1897] __device_attach+0x23f/0x3a0 [ 47.625924][ T1897] ? device_bind_driver+0xd0/0xd0 [ 47.626433][ T1897] ? kobject_uevent_env+0x287/0x14b0 [ 47.627057][ T1897] bus_probe_device+0x1da/0x290 [ 47.627557][ T1897] device_add+0xb7b/0x1eb0 [ 47.628027][ T1897] ? wait_for_completion+0x290/0x290 [ 47.628593][ T1897] ? __fw_devlink_link_to_suppliers+0x5a0/0x5a0 [47.629249][ T1897] usb_set_configuration+0xf59/0x16f0 [ 47.629829][ T1897] usb_generic_driver_probe+0x82/0xa0 [ 47.630385][ T1897] usb_probe_device+0xbb/0x250 [ 47.630927][ T1897] ? usb_suspend+0x590/0x590 [ 47.631397][ T1897] really_probe+0x205/0xb70 [ 47.631855][ T1897] ? driver_allows_async_probing+0x130/0x130 [ 47.632469][ T1897] __driver_probe_device+0x311/0x4b0 [47.633002][ ---truncated--- (CVE-2022-50258)

  - 已修复 Linux 内核中的下列漏洞：netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions. (CVE-2023-53000)

  - 已修复 Linux 内核中的下列漏洞：scsi: mpi3mr: Bad drive in topology results kernel crash When the SAS Transport Layer support is enabled and a device exposed to the OS by the driver fails INQUIRY commands, the driver frees up the memory allocated for an internal HBA port data structure. However, in some places, the reference to the freed memory is not cleared. When the firmware sends the Device Info change event for the same device again, the freed memory is accessed and that leads to memory corruption and OS crash. (CVE-2023-53037)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

远程 Redhat Enterprise Linux 8 主机上安装的程序包受到 RHSA-2023:7077 公告中提及的多个漏洞的影响。

    内核程序包中包含 Linux 内核，后者是任何 Linux 操作系统的核心。

    安全修复：

    * kernel: tun避免 tun_free_netdev 中的双重释放 (CVE-2022-4744)

    * kernel: net/sched多个漏洞CVE-2023-3609、 CVE-2023-3611、 CVE-2023-4128、 CVE-2023-4206、 CVE-2023-4207、 CVE-2023-4208)

    * kernel：qfq_change_class 函数中存在越界写入问题 (CVE-2023-31436)

    * 内核hw_atl_utils_fw_rpc_wait 中存在越界写入 (CVE-2021-43975)

    * 内核intr_callback 中 r8152 中的速率限制溢出消息 (CVE-2022-3594)

    * 内核l2cap_conn_del 中的释放后使用缺陷 (CVE-2022-3640)

    * 内核usb_8dev_start_xmit 中的双重释放 (CVE-2022-28388)

    * kernel: vmwgfx多个漏洞CVE-2022-38457、 CVE-2022-40133、 CVE-2023-33951、 CVE-2023-33952]

    * hw: Intel收集数据采样 (GDS) 边信道漏洞 (CVE-2022-40982)

    * 内核l2cap_parse_conf_req 中的信息泄漏 (CVE-2022-42895)

    * kernel: KVM多个漏洞CVE-2022-45869、 CVE-2023-4155、 CVE-2023-30456]

    * 内核ttusb_dec_exit_dvb 中的内存泄漏 (CVE-2022-45887)

    * 内核do_prlimit 中的推测指针取消引用 (CVE-2023-0458)

    * 内核由于 qdisc_graft 中的争用条件导致的释放后使用 (CVE-2023-0590)

    - 内核：x86/mm：随机化 per-cpu 条目区域 (CVE-2023-0597)

    * 内核HID检查 hid_validate_values 中的空 report_list (CVE-2023-1073)

    * kernelsctp如果没有边界地址可用于给定范围则失败 (CVE-2023-1074)

    * kernel: hidasus_remove 中的释放后使用 (CVE-2023-1079)

    * kerneldrivers/media/rc/ene_ir.c 中的释放后使用 (CVE-2023-1118)

    * 内核IPv6 连接查找表中的哈希冲突 (CVE-2023-1206)

    * kernel：ovl：修复 ovl_aio_req 结构中的释放后使用 (CVE-2023-1252)

    * 内核tipc_conn_close 中的拒绝服务 (CVE-2023-1382)

    * kernel：由于争用条件，btsdio_remove 中存在释放后使用 (CVE-2023-1989)

    * 内核：Spectre v2 SMT 缓解措施问题 (CVE-2023-1998)

    * kernel: ext4ext4_xattr_set_entry 中的释放后使用 (CVE-2023-2513)

    * kernelfbconfbcon_set_font 中的位移越界 (CVE-2023-3161)

    * 内核relay_file_read 中的越界访问 (CVE-2023-3268)

    * kernel: xfrmxfrm_update_ae_params 中空指针取消引用 (CVE-2023-3772)

    * kernel: smsusbdo_submit_urb 造成的释放后使用 (CVE-2023-4132)

    * kernel迁移页面的任务与调用 exit_mmap 的其他任务之间的争用 (CVE-2023-4732)

    * 内核atm_tc_enqueue 中因类型混淆造成拒绝服务 (CVE-2023-23455)

    * kernel：mpls：sysctl 分配时的双重释放失败 (CVE-2023-26545)

    * 内核az6027 驱动程序中的拒绝服务问题 (CVE-2023-28328)

    * kernellib/seq_buf.c 存在 seq_buf_putmem_hex 缓冲区溢出 (CVE-2023-28772)

    * 内核dvb_frontend_get_event 和 wait_event_interruptible 中的阻断操作 (CVE-2023-31084)

    * kernel: netqcom/emac争用条件导致 emac_remove 中释放后使用 (CVE-2023-33203)

    * kernelsaa7134争用条件导致 saa7134_finidev 中的释放后使用 (CVE-2023-35823)

    * kernel: dm1105争用条件导致 dm1105_remove.c 中的释放后使用 (CVE-2023-35824)

    * kernelr592争用条件导致 r592_remove 中的释放后使用 (CVE-2023-35825)

    * kernel：net/tls：tls_is_tx_ready() 检查了 list_entry (CVE-2023-1075)

    * kernel：删除函数 xgene_hwmon_remove 中的释放后使用缺陷 (CVE-2023-1855)

    * kernel：r592_remove 中的释放后使用缺陷 (CVE-2023-3141)

    * kernel: gfs2gfs2_evict_inode 中的空指针取消引用 (CVE-2023-3212)

    有关上述安全问题的更多详细信息，包括其影响、CVSS 得分、致谢，以及其他相关信息，请参阅列于“参考”部分的 CVE 页面。

    其他变更：

    如需有关此发行版本的详细变更信息，请参阅可从“参考”部分链接的 Red Hat Enterprise Linux 8.9 版本说明。

Tenable 已直接从 Red Hat Enterprise Linux 安全公告中提取上述描述块。

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

如 TuxCare CENTOS8.4：CLSA-2026：1771078945公告所述，CentOS Linux 8.4 主机上存在安装的程序包，该漏洞会受到多个漏洞的影响。

  - 已修复 Linux 内核中的下列漏洞：pid: take a reference when initializing `cad_pid` During boot, kernel_init_freeable() initializes `cad_pid` to the init task's struct pid. Later on, we may change `cad_pid` via a sysctl, and when this happens proc_do_cad_pid() will increment the refcount on the new pid via get_pid(), and will decrement the refcount on the old pid via put_pid(). As we never called get_pid() when we initialized `cad_pid`, we decrement a reference we never incremented, can therefore free the init task's struct pid early. As there can be dangling references to the struct pid, we can later encounter a use-after-free (e.g. when delivering signals). This was spotted when fuzzing v5.13-rc3 with Syzkaller, but seems to have been around since the conversion of `cad_pid` to struct pid in commit 9ec52099e4b8 ([PATCH] replace cad_pid by a struct pid) from the pre-KASAN stone age of v2.6.19. Fix this by getting a reference to the init task's struct pid when we assign it to `cad_pid`.
    Full KASAN splat below. ================================================================== BUG: KASAN:
    use-after-free in ns_of_pid include/linux/pid.h:153 [inline] BUG: KASAN: use-after-free in task_active_pid_ns+0xc0/0xc8 kernel/pid.c:509 Read of size 4 at addr ffff23794dda0004 by task syz-executor.0/273 CPU: 1 PID: 273 Comm: syz-executor.0 Not tainted 5.12.0-00001-g9aef892b2d15 #1 Hardware name: linux,dummy-virt (DT) Call trace: ns_of_pid include/linux/pid.h:153 [inline] task_active_pid_ns+0xc0/0xc8 kernel/pid.c:509 do_notify_parent+0x308/0xe60 kernel/signal.c:1950 exit_notify kernel/exit.c:682 [inline] do_exit+0x2334/0x2bd0 kernel/exit.c:845 do_group_exit+0x108/0x2c8 kernel/exit.c:922 get_signal+0x4e4/0x2a88 kernel/signal.c:2781 do_signal arch/arm64/kernel/signal.c:882 [inline] do_notify_resume+0x300/0x970 arch/arm64/kernel/signal.c:936 work_pending+0xc/0x2dc Allocated by task 0: slab_post_alloc_hook+0x50/0x5c0 mm/slab.h:516 slab_alloc_node mm/slub.c:2907 [inline] slab_alloc mm/slub.c:2915 [inline] kmem_cache_alloc+0x1f4/0x4c0 mm/slub.c:2920 alloc_pid+0xdc/0xc00 kernel/pid.c:180 copy_process+0x2794/0x5e18 kernel/fork.c:2129 kernel_clone+0x194/0x13c8 kernel/fork.c:2500 kernel_thread+0xd4/0x110 kernel/fork.c:2552 rest_init+0x44/0x4a0 init/main.c:687 arch_call_rest_init+0x1c/0x28 start_kernel+0x520/0x554 init/main.c:1064 0x0 Freed by task 270:
    slab_free_hook mm/slub.c:1562 [inline] slab_free_freelist_hook+0x98/0x260 mm/slub.c:1600 slab_free mm/slub.c:3161 [inline] kmem_cache_free+0x224/0x8e0 mm/slub.c:3177 put_pid.part.4+0xe0/0x1a8 kernel/pid.c:114 put_pid+0x30/0x48 kernel/pid.c:109 proc_do_cad_pid+0x190/0x1b0 kernel/sysctl.c:1401 proc_sys_call_handler+0x338/0x4b0 fs/proc/proc_sysctl.c:591 proc_sys_write+0x34/0x48 fs/proc/proc_sysctl.c:617 call_write_iter include/linux/fs.h:1977 [inline] new_sync_write+0x3ac/0x510 fs/read_write.c:518 vfs_write fs/read_write.c:605 [inline] vfs_write+0x9c4/0x1018 fs/read_write.c:585 ksys_write+0x124/0x240 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __arm64_sys_write+0x78/0xb0 fs/read_write.c:667 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall arch/arm64/kernel/syscall.c:49 [inline] el0_svc_common.constprop.1+0x16c/0x388 arch/arm64/kernel/syscall.c:129 do_el0_svc+0xf8/0x150 arch/arm64/kernel/syscall.c:168 el0_svc+0x28/0x38 arch/arm64/kernel/entry-common.c:416 el0_sync_handler+0x134/0x180 arch/arm64/kernel/entry-common.c:432 el0_sync+0x154/0x180 arch/arm64/kernel/entry.S:701 The buggy address belongs to the object at ffff23794dda0000 which belongs to the cache pid of size 224 The buggy address is located 4 bytes inside of 224-byte region [ff
    ---truncated--- (CVE-2021-47118)

  - 已修复 Linux 内核中的下列漏洞：i2c: i801: Don't generate an interrupt on bus reset Now that the i2c-i801 driver supports interrupts, setting the KILL bit in a attempt to recover from a timed out transaction triggers an interrupt. Unfortunately, the interrupt handler (i801_isr) is not prepared for this situation and will try to process the interrupt as if it was signaling the end of a successful transaction. In the case of a block transaction, this can result in an out-of-range memory access. This condition was reproduced several times by syzbot:
    https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e https://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a https://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79 So disable interrupts while trying to reset the bus. Interrupts will be enabled again for the following transaction. (CVE-2021-47153)

  - 已修复 Linux 内核中的下列漏洞：scsi: target: Fix WRITE_SAME No Data Buffer crash In newer version of the SBC specs, we have a NDOB bit that indicates there is no data buffer that gets written out. If this bit is set using commands like sg_write_same --ndob we will crash in target_core_iblock/file's execute_write_same handlers when we go to access the se_cmd->t_data_sg because its NULL. This patch adds a check for the NDOB bit in the common WRITE SAME code because we don't support it. And, it adds a check for zero SG elements in each handler in case the initiator tries to send a normal WRITE SAME with no data buffer. (CVE-2022-21546)

  - 已修复 Linux 内核中的下列漏洞：net/mlx5e: IPoIB, Block PKEY interfaces with less rx queues than parent A user is able to configure an arbitrary number of rx queues when creating an interface via netlink. This doesn't work for child PKEY interfaces because the child interface uses the parent receive channels. Although the child shares the parent's receive channels, the number of rx queues is important for the channel_stats array: the parent's rx channel index is used to access the child's channel_stats. So the array has to be at least as large as the parent's rx queue size for the counting to work correctly and to prevent out of bound accesses. This patch checks for the mentioned scenario and returns an error when trying to create the interface. The error is propagated to the user. (CVE-2022-48883)

  - 已修复 Linux 内核中的下列漏洞：ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix The rxstatus->rs_keyix eventually gets passed to test_bit() so we need to ensure that it is within the bitmap. drivers/net/wireless/ath/ath9k/common.c:46 ath9k_cmn_rx_accept() error: passing untrusted data 'rx_stats->rs_keyix' to 'test_bit()' (CVE-2022-49503)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

远程 Redhat Enterprise Linux 9 主机上安装的多个程序包受到 RHSA-2023:6583 公告中提及的多个漏洞影响。

  - 内核：内存管理器中设备私有页面发生故障时，出现争用 (CVE-2022-3523)

  - kernel：l1oip 计时器处理程序中的释放后使用 (CVE-2022-3565)

  - 内核：intr_callback 的 r8152 中存在速率限制溢出消息 (CVE-2022-3594)

  - 内核：vmwgfx：vmw_cmd_res_check 中存在释放后使用漏洞 (CVE-2022-38457)

  - 内核：vmwgfx：vmw_execbuf_tie_context 中存在释放后使用漏洞 (CVE-2022-40133)

  - hw: Intel：收集数据采样 (GDS) 边信道漏洞 (CVE-2022-40982)

  - 内核：net/bluetooth/l2cap_core.c 的 l2cap_parse_conf_req 中存在信息泄漏漏洞 (CVE-2022-42895)

  - kernel: x86/mm：随机化 per-cpu 条目区域 (CVE-2023-0597)

  - kernel: HID：检查 hid_validate_values() 中空的 report_list (CVE-2023-1073)

  - kernel: sctp：如果给定范围内没有可以使用的绑定地址，则失败 (CVE-2023-1074)

  - kernel: net/tls：tls_is_tx_ready() 检查了 list_entry (CVE-2023-1075)

  - kernel: tap: tap_open()：正确初始化套接字 uid (CVE-2023-1076)

  - kernel: hid：asus_remove() 中的释放后使用 (CVE-2023-1079)

  - kernel：IPv6 连接查找表中的哈希冲突 (CVE-2023-1206)

  - kernel：file_files_note 中缺少 mmap_lock，可能导致 coredump 代码中出现释放后使用 (CVE-2023-1249)

  - kernel: ovl：修复 ovl_aio_req 结构中的释放后使用 (CVE-2023-1252)

  - Kernel：fs/nfsd/nfs4proc.c 中 nfsd4_ssc_setup_dul 中的释放后使用 (CVE-2023-1652)

  - kernel：删除函数 xgene_hwmon_remove 中的释放后使用缺陷 (CVE-2023-1855)

  - Kernel：由于争用条件，xen_9pfs_front_remove 中存在释放后使用 (CVE-2023-1989)

  - Kernel：dm- ioctl.c 的 dm_get_inactive_table 中可能存在死锁问题，进而导致 DOS (CVE-2023-2269)

  - kernel：r592_remove 中的释放后使用缺陷 (CVE-2023-3141)

  - kernel: fbcon：fbcon_set_font() 中的 shift 越界 (CVE-2023-3161)

  - kernel: gfs2：修复 gfs2_rgrp_dump 中的空指针取消引用漏洞 (CVE-2023-3212)

  - kernel：relay_file_read 中的越界访问 (CVE-2023-3268)

  - kernel：由于 shtp_cl_get_dma_send_buf() 中缺少 kalloc() 返回值检查，导致空指针取消引用 (CVE-2023-3358)

  - kernel：net/sched：如果 tcf_change_indev() 失败，cls_u32 组件引用计数器将会泄漏 (CVE-2023-3609)

  - kernel: xfrm：xfrm_update_ae_params() 中的空指针取消引用 (CVE-2023-3772)

  - kernel: xfrm：XFRMA_MTIMER_THRESH nlattr 发生越界读取 (CVE-2023-3773)

  - kernel：SEV-ES/SEV-SNP VMGEXIT 双重提取漏洞 (CVE-2023-4155)

   kernel: tap: tap_open()：正确初始化套接字 uid，再将 i_uid 修复为 current_fsuid (CVE-2023-4194)

  - kernel：net/sched：net/sched 分类器中存在释放后使用漏洞：cls_fw、cls_u32 和 cls_route（CVE-2023-4206、CVE-2023-4207、CVE-2023-4208）

  - kernel: exFAT：exfat_get_uniname_from_ext_entry 中的堆栈溢出（CVE-2023-4273）

  - kernel: mpls：sysctl 分配时的双重释放失败 (CVE-2023-26545)

  - 内核：KVM：nVMX：缺少对 CR0 和 CR4 的一致性检查 (CVE-2023-30456)

  - kernel：net: qcom/emac: 争用条件导致 emac_remove() 中发生释放后使用 (CVE-2023-33203)

  - 内核：vmwgfx：争用条件导致信息泄露漏洞 (CVE-2023-33951)

  - 内核：vmwgfx：处理 vmw_buffer_object 对象时发生双重释放 (CVE-2023-33952)

  - kernel: r592: 争用条件导致 r592_remove() 中发生释放后使用 (CVE-2023-35825)

  - 内核：eBPF：dynptr 中的堆栈类型检查不充分 (CVE-2023-39191)

请注意，Nessus 尚未测试这些问题，而是只依据应用程序自我报告的版本号进行判断。

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
360928	CentOS Linux 8.5 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等多个漏洞（CENTOS8.5：CLSA-2026：1771077729）	Nessus	CentOS Local Security Checks	2026/10/1	2026/10/1	high
249933	Linux Distros 未修补的漏洞：CVE-2023-53077	Nessus	Misc.	2025/8/15	2026/9/30	high
352030	AlmaLinux 9.2 [TuxCare] 安全更新：bpftool / kernel / kernel-abi-stablelists / kernel-core / 等多个漏洞（ALMALINUX9.2：CLSA-2025：1765463110）	Nessus	Alma Linux Local Security Checks	2026/9/30	2026/10/1	high
185679	RHEL 8：内核 (RHSA-2023:7077)	Nessus	Red Hat Local Security Checks	2023/11/14	2025/9/10	high
361173	CentOS Linux 8.4 [TuxCare] 安全更新：bpftool / kernel / kernel-core / kernel-cross-headers / 等多个漏洞（CENTOS8.4：CLSA-2026：1771078945）	Nessus	CentOS Local Security Checks	2026/10/1	2026/10/1	high
194262	RHEL 9：kernel (RHSA-2023:6583)	Nessus	Red Hat Local Security Checks	2024/4/28	2025/10/28	high

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