CVEvulnerability
CVE-2020-28974
5.0 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-11-20
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.0 MEDIUM — CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
- CVSS 2.0 ([email protected])
- 6.1 MEDIUM — AV:L/AC:L/Au:N/C:P/I:P/A:C
- Weaknesses
- CWE-125
Description
A slab-out-of-bounds read in fbcon in the Linux kernel before 5.9.7 could be used by local attackers to read privileged information or potentially crash the kernel, aka CID-3c4e0dff2095. This occurs because KD_FONT_OP_COPY in drivers/tty/vt/vt.c can be used for manipulations such as font height.
Affected configurations
• linux linux kernel (< 5.9.7)
• debian debian linux 9.0
Related
Weakness · CWE (1)
- CWE-125 Out-of-bounds Read weakness
References
- http://www.openwall.com/lists/oss-security/2020/11/25/1 Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7 Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804 Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Third Party Advisory
- https://seclists.org/oss-sec/2020/q4/104 Exploit, Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210108-0003/ Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/25/1 Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7 Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804 Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html Third Party Advisory
- https://seclists.org/oss-sec/2020/q4/104 Exploit, Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210108-0003/ Third Party Advisory