CVEvulnerability
CVE-2018-1095
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2018-04-02
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.5 MEDIUM — CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 7.1 HIGH — AV:N/AC:M/Au:N/C:N/I:N/A:C
- Weaknesses
- CWE-476
Description
The ext4_xattr_check_entries function in fs/ext4/xattr.c in the Linux kernel through 4.15.15 does not properly validate xattr sizes, which causes misinterpretation of a size as an error code, and consequently allows attackers to cause a denial of service (get_acl NULL pointer dereference and system crash) via a crafted ext4 image.
Affected configurations
• linux linux kernel (<= 4.15.15)
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- http://openwall.com/lists/oss-security/2018/03/29/1 Mailing List
- https://access.redhat.com/errata/RHSA-2018:2948 access.redhat.com
- https://bugzilla.kernel.org/show_bug.cgi?id=199185 Exploit, Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1560793 Issue Tracking
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=ce3fd194fcc6fbdc00ce095a852f22df97baa401 Patch
- https://usn.ubuntu.com/3695-1/ usn.ubuntu.com
- https://usn.ubuntu.com/3695-2/ usn.ubuntu.com
- http://openwall.com/lists/oss-security/2018/03/29/1 Mailing List
- https://access.redhat.com/errata/RHSA-2018:2948 access.redhat.com
- https://bugzilla.kernel.org/show_bug.cgi?id=199185 Exploit, Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1560793 Issue Tracking
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=ce3fd194fcc6fbdc00ce095a852f22df97baa401 Patch
- https://usn.ubuntu.com/3695-1/ usn.ubuntu.com
- https://usn.ubuntu.com/3695-2/ usn.ubuntu.com