The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - ocfs2: handle invalid dinode in ocfs2_group_extend [BUG] kernel BUG at fs/ocfs2/resize.c:308! Oops:
    invalid opcode: 0000 [#1] SMP KASAN NOPTI RIP: 0010:ocfs2_group_extend+0x10aa/0x1ae0 fs/ocfs2/resize.c:308     Code: 8b8520ff ffff83f8 860f8580 030000e8 5cc3c1fe Call Trace: ... ocfs2_ioctl+0x175/0x6e0     fs/ocfs2/ioctl.c:869 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline]
    __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x197/0x1e0 fs/ioctl.c:583     x64_sys_call+0x1144/0x26a0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64     arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x93/0xf80 arch/x86/entry/syscall_64.c:94     entry_SYSCALL_64_after_hwframe+0x76/0x7e ... [CAUSE] ocfs2_group_extend() assumes that the global bitmap     inode block returned from ocfs2_inode_lock() has already been validated and BUG_ONs when the signature is     not a dinode. That assumption is too strong for crafted filesystems because the JBD2-managed buffer path     can bypass structural validation and return an invalid dinode to the resize ioctl. [FIX] Validate the     dinode explicitly in ocfs2_group_extend(). If the global bitmap buffer does not contain a valid dinode,     report filesystem corruption with ocfs2_error() and fail the resize operation instead of crashing the     kernel. (CVE-2026-31596)

Note that Nessus relies on the presence of the package as reported by the vendor.

An update of the linux package has been released.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
310306	Linux Distros Unpatched Vulnerability : CVE-2026-31596	Nessus	Misc.	2026/4/25	2026/9/22	medium
319599	Photon OS 5.0: Linux PHSA-2026-5.0-0862	Nessus	PhotonOS Local Security Checks	2026/6/6	2026/8/26	high
323086	SUSE SLED15 / SLES15 : Security update for the Linux Kernel (SUSE-SU-2026:2482-1)	Nessus	SuSE Local Security Checks	2026/6/26	2026/9/29	high

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