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。

  - ext4“ext4_rename”中“old.inode”的初始化配额 Syzbot 发现以下问题ext4_parse_param
    s_want_extra_isize=128 ext4_inode_info_inits_want_extra_isize=32 ext4_rename 旧。inode=ffff88823869a2c8 旧。dir=ffff888238699828 new。inode=ffff88823869d7e8 new。dir=ffff888238699828 __ext4_mark_inode_dirty
    inode=ffff888238699828 ea_isize=32want_ea_size=128__ext4_mark_inode_dirty inode=ffff88823869a2c8 ea_isize=32want_ea_size=128ext4_xattr_block_set inode=ffff88823869a2c8 ------------[在此剪切]------------ WARNING: CPU13 PID: 2234 at fs/ext4/xattr.c:2070 ext4_xattr_block_set.cold+0x22/0x980 模块中链接的 RIP: 0010:ext4_xattr_block_set.cold+0x22/0x980 RSP: 0018:ffff888227d3f3b0 EFLAGS
    00010202 RAX0000000000000001 RBXffff88823007a000 RCX0000000000000000 RDX0000000000000a03 RSI
    0000000000000040 RDI: ffff888230078178 RBP: 0000000000000000 R08: 000000000000002c R09: ffffed1075c7df8e R10: ffff8883ae3efc6b R11: ffffed1075c7df8d R12: 0000000000000000 R13: ffff88823869a2c8 R14:
     R15ffff8881012e0460  : dffffc0000000000 FS: 00007f350ac1f740(0000) GS:ffff8883ae200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f350a6ed6a0 CR3:
    0000000237456000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? ext4_xattr_set_entry+0x3b7/0x2320 ? ext4_xattr_block_set+0x0/0x2020 ? ext4_xattr_set_entry+0x0/0x2320 ? ext4_xattr_check_entries+0x77/0x310 ? ext4_xattr_ibody_set+0x23b/0x340 ext4_xattr_move_to_block+0x594/0x720 ext4_expand_extra_isize_ea+0x59a/0x10f0
    __ext4_expand_extra_isize+0x278/0x3f0 __ext4_mark_inode_dirty.cold+0x347/0x410 ext4_rename+0xed3/0x174f vfs_rename+0x13a7/0x2510 do_renameat2+0x55d/0x920 __x64_sys_rename+0x7d/0xb0 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc As 'ext4_rename' will modify 'old .inode”ctime 并将 inode 标记为脏这可能会触发扩展“extra_isize”并分配区块。inode 未初始化配额时将导致警告。要解决上述问题请首先初始化“ext4_rename”中的“old.inode”。 (CVE-2022-50346)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

检测

Linux Distros 未修补的漏洞：CVE-2022-50346

medium Nessus 插件 ID 265641

版本 1.16