VulnerabilityModified
CVE-2020-28974
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.
MEDIUM 5.0EPSS 0.52%
Does this matter?
Lower severity and a low EPSS score (0.52%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.0 MEDIUMCVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:H
- EPSS
- 0.52% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel · debian/debian linux
- Source
- cve@mitre.org
References
- http://www.openwall.com/lists/oss-security/2020/11/25/1Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlThird Party Advisory
- https://seclists.org/oss-sec/2020/q4/104Exploit, Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210108-0003/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/11/25/1Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.7Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3c4e0dff2095c579b142d5a0693257f1c58b4804Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlThird Party Advisory
- https://seclists.org/oss-sec/2020/q4/104Exploit, Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210108-0003/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.