CVE-2021-3759
First published: Thu Jul 15 2021(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-372.9.1.rt7.166.el8 | 0:4.18.0-372.9.1.rt7.166.el8 |
| redhat/kernel | <0:4.18.0-372.9.1.el8 | 0:4.18.0-372.9.1.el8 |
| Linux Linux kernel | ||
| Debian Debian Linux | =10.0 | |
| redhat/Linux kernel | <5.15 | 5.15 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
Remedy
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2021-3759 https://nvd.nist.gov/vuln/detail/CVE-2021-3759 https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive@gmail.com/
- https://bugzilla.redhat.com/show_bug.cgi?id=1999675
- https://access.redhat.com/errata/RHSA-2022:1975
- https://access.redhat.com/errata/RHSA-2022:1988
- https://access.redhat.com/security/cve/cve-2021-3759
- https://access.redhat.com/security/cve/CVE-2021-3759
- https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive@gmail.com/
- https://launchpad.net/bugs/cve/CVE-2021-3759
- https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/
- https://security-tracker.debian.org/tracker/CVE-2021-3759
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3759
- https://nvd.nist.gov/vuln/detail/CVE-2021-3759
- https://ubuntu.com/security/CVE-2021-3759
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