CVE-2021-3764
First published: Fri Aug 20 2021(Updated: )
A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an attacker to cause a denial of service. The vulnerability is similar to the older CVE-2019-18808. 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 | <=5.14.20 | |
| Linux Linux kernel | =5.15 | |
| Linux Linux kernel | =5.15-rc1 | |
| Linux Linux kernel | =5.15-rc2 | |
| Linux Linux kernel | =5.15-rc3 | |
| redhat/Linux kernel | <4.12 | 4.12 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.112-1 6.11.5-1 6.11.7-1 |
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-2021-3764 https://nvd.nist.gov/vuln/detail/CVE-2021-3764 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=36cf515b9bbe
- https://bugzilla.redhat.com/show_bug.cgi?id=1997467
- https://access.redhat.com/errata/RHSA-2022:1975
- https://access.redhat.com/errata/RHSA-2022:1988
- https://access.redhat.com/security/cve/cve-2021-3764
- https://access.redhat.com/security/cve/CVE-2021-3764
- https://github.com/torvalds/linux/commit/505d9dcb0f7ddf9d075e729523a33d38642ae680
- https://security-tracker.debian.org/tracker/CVE-2021-3764
- https://launchpad.net/bugs/cve/CVE-2021-3764
- https://access.redhat.com/security/cve/CVE-2019-18808
- https://access.redhat.com/security/cve/CVE-2021-3744
- https://git.kernel.org/linus/505d9dcb0f7ddf9d075e729523a33d38642ae680
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3764
- https://nvd.nist.gov/vuln/detail/CVE-2021-3764
- https://ubuntu.com/security/CVE-2021-3764
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