VulnerabilityModified
CVE-2021-3759
A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores.
MEDIUM 5.5EPSS 0.36%
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
Description
A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.36% probability · 29th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-770
- Affected
- linux/linux kernel · debian/debian linux
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2021-3759Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1999675Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00031.htmlMailing List, Third Party Advisory
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/
- https://access.redhat.com/security/cve/CVE-2021-3759Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1999675Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00031.htmlMailing List, Third Party Advisory
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.