An update of the linux package has been released.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100693 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    ocfs2: fix listxattr handling when the buffer is full

    [BUG]     If an OCFS2 inode has both inline and block-based xattrs, listxattr()     can return a size larger than the caller's buffer when the inline names     consume that buffer exactly.

    kernel BUG at mm/usercopy.c:102!     Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI     RIP: 0010:usercopy_abort+0xb7/0xd0 mm/usercopy.c:102     Call Trace:
     __check_heap_object+0xe3/0x120 mm/slub.c:8243      check_heap_object mm/usercopy.c:196 [inline]
     __check_object_size mm/usercopy.c:250 [inline]
     __check_object_size+0x5c5/0x780 mm/usercopy.c:215      check_object_size include/linux/ucopysize.h:22 [inline]      check_copy_size include/linux/ucopysize.h:59 [inline]      copy_to_user include/linux/uaccess.h:219 [inline]      listxattr+0xb0/0x170 fs/xattr.c:926      filename_listxattr fs/xattr.c:958 [inline]      path_listxattrat+0x137/0x320 fs/xattr.c:988
     __do_sys_listxattr fs/xattr.c:1001 [inline]
     __se_sys_listxattr fs/xattr.c:998 [inline]
     __x64_sys_listxattr+0x7f/0xd0 fs/xattr.c:998      ...

    [CAUSE]     Commit 936b8834366e (ocfs2: Refactor xattr list and remove     ocfs2_xattr_handler().) replaced the old per-handler list accounting     with ocfs2_xattr_list_entry(), but it kept using size == 0 to detect     probe mode.

    That assumption stops being true once ocfs2_listxattr() finishes the     inline-xattr pass. If the inline names fill the caller buffer exactly,     the block-xattr pass runs with a non-NULL buffer and a remaining size of     zero. ocfs2_xattr_list_entry() then skips the bounds check, keeps     counting block names, and returns a positive size larger than the     supplied buffer.

    [FIX]     Detect probe mode by testing whether the destination buffer pointer is     NULL instead of whether the remaining size is zero.

    That restores the pre-refactor behavior and matches the OCFS2 getxattr     helpers. Once the remaining buffer reaches zero while more names are     left, the block-xattr pass now returns -ERANGE instead of reporting a     size larger than the allocated list buffer.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
329305	openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21388-1)	Nessus	SuSE Local Security Checks	2026/7/24	2026/9/19	high
333941	Photon OS 5.0: Linux PHSA-2026-5.0-92-0926	Nessus	PhotonOS Local Security Checks	2026/8/10	2026/9/19	high
336864	Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100693)	Nessus	Unity Linux Local Security Checks	2026/8/17	2026/8/17	high
340045	Ubuntu 26.04 LTS : Linux kernel (NVIDIA BaseOS) vulnerabilities (USN-8664-1)	Nessus	Ubuntu Local Security Checks	2026/8/26	2026/9/17	high

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