远程 Azure Linux 3.0 主机上安装的内核版本低于 测试的版本。因此，该程序受到 CVE-2024-26596 公告中提及的一个漏洞影响。

  - 已修复 Linux 内核中的下列漏洞：net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events After the blamed commit, we started doing this dereference for every NETDEV_CHANGEUPPER and NETDEV_PRECHANGEUPPER event in the system. static inline struct dsa_port *dsa_user_to_port(const struct net_device *dev) { struct dsa_user_priv *p = netdev_priv(dev); return p->dp; } Which is obviously bogus, because not all net_devices have a netdev_priv() of type struct dsa_user_priv. But struct dsa_user_priv is fairly small, and p->dp means dereferencing 8 bytes starting with offset 16. Most drivers allocate that much private memory anyway, making our access not fault, and we discard the bogus data quickly afterwards, so this wasn't caught. But the dummy interface is somewhat special in that it calls alloc_netdev() with a priv size of 0. So every netdev_priv() dereference is invalid, and we get this when we emit a NETDEV_PRECHANGEUPPER event with a VLAN as its new upper: $ ip link add dummy1 type dummy $ ip link add link dummy1 name dummy1.100 type vlan id 100 [ 43.309174] ================================================================== [ 43.316456] BUG:
    KASAN: slab-out-of-bounds in dsa_user_prechangeupper+0x30/0xe8 [ 43.323835] Read of size 8 at addr ffff3f86481d2990 by task ip/374 [ 43.330058] [ 43.342436] Call trace: [ 43.366542] dsa_user_prechangeupper+0x30/0xe8 [ 43.371024] dsa_user_netdevice_event+0xb38/0xee8 [ 43.375768] notifier_call_chain+0xa4/0x210 [ 43.379985] raw_notifier_call_chain+0x24/0x38 [ 43.384464]
    __netdev_upper_dev_link+0x3ec/0x5d8 [ 43.389120] netdev_upper_dev_link+0x70/0xa8 [ 43.393424] register_vlan_dev+0x1bc/0x310 [ 43.397554] vlan_newlink+0x210/0x248 [ 43.401247] rtnl_newlink+0x9fc/0xe30 [ 43.404942] rtnetlink_rcv_msg+0x378/0x580 Avoid the kernel oops by dereferencing after the type check, as customary. (CVE-2024-26596)

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

远程 Debian 11 主机上安装的多个程序包受到 dla-4102 公告中提及的多个漏洞影响。

    ------------------------------------------------------------------------- Debian LTS 公告 DLA-4102-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/Ben Hutchings 2025 年 3 月 31 日 https://wiki.debian.org/LTS-------------------------------------------------------------------------

    程序包：linux-6.1 版本：6.1.129-1~deb11u1 CVE ID：CVE-2024-26596 CVE-2024-40945 CVE-2024-42069 CVE-2024-42122 CVE-2024-45001 CVE-2024-47726 CVE-2024-49989 CVE-2024-50061 CVE-2024-54458 CVE-2024-56549 CVE-2024-57834 CVE-2024-57973 CVE-2024-57978 CVE-2024-57979 CVE-2024-57980 CVE-2024-57981 CVE-2024-57986 CVE-2024-57993 CVE-2024-57996 CVE-2024-57997 CVE-2024-57998 CVE-2024-58001 CVE-2024-58007 CVE-2024-58009 CVE-2024-58010 CVE-2024-58011 CVE-2024-58013 CVE-2024-58014 CVE-2024-58016 CVE-2024-58017 CVE-2024-58020 CVE-2024-58034 CVE-2024-58051 CVE-2024-58052 CVE-2024-58054 CVE-2024-58055 CVE-2024-58056 CVE-2024-58058 CVE-2024-58061 CVE-2024-58063 CVE-2024-58068 CVE-2024-58069 CVE-2024-58071 CVE-2024-58072 CVE-2024-58076 CVE-2024-58077 CVE-2024-58080 CVE-2024-58083 CVE-2024-58085 CVE-2024-58086 CVE-2025-21684 CVE-2025-21700 CVE-2025-21701 CVE-2025-21703 CVE-2025-21704 CVE-2025-21705 CVE-2025-21706 CVE-2025-21707 CVE-2025-21708 CVE-2025-21711 CVE-2025-21715 CVE-2025-21716 CVE-2025-21718 CVE-2025-21719 CVE-2025-21722 CVE-2025-21724 CVE-2025-21725 CVE-2025-21726 CVE-2025-21727 CVE-2025-21728 CVE-2025-21731 CVE-2025-21734 CVE-2025-21735 CVE-2025-21736 CVE-2025-21738 CVE-2025-21744 CVE-2025-21745 CVE-2025-21748 CVE-2025-21749 CVE-2025-21750 CVE-2025-21753 CVE-2025-21758 CVE-2025-21760 CVE-2025-21761 CVE-2025-21762 CVE-2025-21763 CVE-2025-21764 CVE-2025-21765 CVE-2025-21766 CVE-2025-21767 CVE-2025-21772 CVE-2025-21775 CVE-2025-21776 CVE-2025-21779 CVE-2025-21780 CVE-2025-21781 CVE-2025-21782 CVE-2025-21785 CVE-2025-21787 CVE-2025-21790 CVE-2025-21791 CVE-2025-21792 CVE-2025-21794 CVE-2025-21795 CVE-2025-21796 CVE-2025-21799 CVE-2025-21802 CVE-2025-21804 CVE-2025-21806 CVE-2025-21811 CVE-2025-21812 CVE-2025-21814 CVE-2025-21819 CVE-2025-21820 CVE-2025-21821 CVE-2025-21823 CVE-2025-21826 CVE-2025-21829 CVE-2025-21830 CVE-2025-21832 CVE-2025-21835 Debian Bug：1071562 1087807 1088159 1091517 1091858 1093371 1095435 1095745 1095764 1098250 1098354 1099138

    在 Linux 内核中发现多个可能导致权限升级、拒绝服务或信息泄漏的漏洞。

    对于 Debian 11 bullseye，已在 6.1.129-1~deb11u1 版本中修复这些问题。此外，此更新还包括来自稳定更新 6.1.129 的更多缺陷补丁，以及对影响某些 Rockchip SoC 的回归的补丁。

    建议您升级 linux-6.1 程序包。

    如需了解 linux-6.1 的详细安全状态，请参阅其安全跟踪页面：
    https://security-tracker.debian.org/tracker/linux-6.1

    有关 Debian LTS 安全公告、如何将这些更新应用到系统以及常见问题解答的更多信息，请访问以下网址：https://wiki.debian.org/LTSAttachment:signature.ascDescription: PGP signature

Tenable 已直接从 Debian 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。

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。

  - 在 Linux 内核中，已解决以下漏洞： net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events After the blamed commit, we started doing this dereference for every NETDEV_CHANGEUPPER and NETDEV_PRECHANGEUPPER event in the system. static inline struct dsa_port *dsa_user_to_port(const struct net_device *dev) { struct dsa_user_priv *p = netdev_priv(dev); return p->dp; } Which is obviously bogus, because not all net_devices have a netdev_priv() of type struct dsa_user_priv. But struct dsa_user_priv is fairly small, and p->dp means dereferencing 8 bytes starting with offset 16. Most drivers allocate that much private memory anyway, making our access not fault, and we discard the bogus data quickly afterwards, so this wasn't caught. But the dummy interface is somewhat special in that it calls alloc_netdev() with a priv size of 0. So every netdev_priv() dereference is invalid, and we get this when we emit a NETDEV_PRECHANGEUPPER event with a VLAN as its new upper: $ ip link add dummy1 type dummy $ ip link add link dummy1 name dummy1.100 type vlan id 100 [ 43.309174] ================================================================== [ 43.316456] BUG:
    KASAN: slab-out-of-bounds in dsa_user_prechangeupper+0x30/0xe8 [ 43.323835] Read of size 8 at addr ffff3f86481d2990 by task ip/374 [ 43.330058] [ 43.342436] Call trace: [ 43.366542] dsa_user_prechangeupper+0x30/0xe8 [ 43.371024] dsa_user_netdevice_event+0xb38/0xee8 [ 43.375768] notifier_call_chain+0xa4/0x210 [ 43.379985] raw_notifier_call_chain+0x24/0x38 [ 43.384464]
    __netdev_upper_dev_link+0x3ec/0x5d8 [ 43.389120] netdev_upper_dev_link+0x70/0xa8 [ 43.393424] register_vlan_dev+0x1bc/0x310 [ 43.397554] vlan_newlink+0x210/0x248 [ 43.401247] rtnl_newlink+0x9fc/0xe30 [ 43.404942] rtnetlink_rcv_msg+0x378/0x580 Avoid the kernel oops by dereferencing after the type check, as customary. (CVE-2024-26596)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
295208	Azure Linux 3.0 安全更新内核 (CVE-2024-26596)	Nessus	Azure Linux Local Security Checks	2026/1/22	2026/1/22	medium
233595	Debian dla-4102：linux-config-6.1 - 安全更新	Nessus	Debian Local Security Checks	2025/4/1	2025/4/1	high
227475	Linux Distros 未修补的漏洞: CVE-2024-26596	Nessus	Misc.	2025/3/5	2025/9/5	medium

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