CVEvulnerability
CVE-2020-14311
6.0 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-07-31
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
- CVSS 3.1 ([email protected])
- 6.0 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- CVSS 2.0 ([email protected])
- 3.6 LOW — AV:L/AC:L/Au:N/C:N/I:P/A:P
- Weaknesses
- CWE-122, CWE-190
Description
There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
Affected configurations
• gnu grub2 (< 2.06)
• redhat enterprise linux 7.0
• redhat enterprise linux 8.0
• redhat enterprise linux eus 8.1
• redhat enterprise linux eus 8.2
• redhat enterprise linux server aus 8.2
• redhat enterprise linux server tus 8.2
• opensuse leap 15.1
• opensuse leap 15.2
• canonical ubuntu linux 14.04
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 20.04
Related
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202104-05 Third Party Advisory
- https://usn.ubuntu.com/4432-1/ Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202104-05 Third Party Advisory
- https://usn.ubuntu.com/4432-1/ Third Party Advisory