CVE-2021-45469

In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry.

Summary:

In __f2fs_setxattr in fs/f2fs/xattr.c in the Linux kernel through 5.15.11, there is an out-of-bounds memory access when an inode has an invalid last xattr entry.

Reference Links(if available):

  • https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?h=dev&id=5598b24efaf4892741c798b425d543e4bed357a1
  • https://bugzilla.kernel.org/show_bug.cgi?id=215235
  • http://www.openwall.com/lists/oss-security/2021/12/25/1
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/AK2C4A43BZSWATZWFUHHHUQF3HPIALNP/
  • https://lists.fedoraproject.org/archives/list/[email protected]/message/QG7XV2WXKMSMKIQKIBG5LW3Y3GXEWG5Q/
  • CVSS Score (if available)

    v2: / MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P

    v3: / HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

    Links to Exploits(if available)