CVE-2021-29649
First published: Tue Mar 30 2021(Updated: )
An issue was discovered in the Linux kernel before 5.11.11. The user mode driver (UMD) has a copy_process() memory leak, related to a lack of cleanup steps in kernel/usermode_driver.c and kernel/bpf/preload/bpf_preload_kern.c, aka CID-f60a85cad677.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.11.11 | |
| Red Hat Fedora | =32 | |
| Red Hat Fedora | =33 | |
| Red Hat Fedora | =34 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.25-1 6.12.27-1 |
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Reference Links
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.11
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f60a85cad677c4f9bb4cadd764f1d106c38c7cf8
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/
- https://launchpad.net/bugs/cve/CVE-2021-29649
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/
- https://git.kernel.org/linus/f60a85cad677c4f9bb4cadd764f1d106c38c7cf8
- https://security-tracker.debian.org/tracker/CVE-2021-29649
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29649
- https://nvd.nist.gov/vuln/detail/CVE-2021-29649
- https://ubuntu.com/security/CVE-2021-29649
Frequently Asked Questions
What is the severity of CVE-2021-29649?
CVE-2021-29649 has a medium severity rating due to the potential memory leak in the user mode driver.
How do I fix CVE-2021-29649?
To fix CVE-2021-29649, update your Linux kernel to version 5.11.11 or later.
Which Linux distributions are affected by CVE-2021-29649?
CVE-2021-29649 affects Linux kernel versions before 5.11.11 and specific Fedora versions 32, 33, and 34.
Is CVE-2021-29649 a denial of service vulnerability?
CVE-2021-29649 can lead to increased memory usage which may result in a denial of service under certain conditions.
When was CVE-2021-29649 discovered?
CVE-2021-29649 was discovered before the release of Linux kernel version 5.11.11.
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