CVE-2024-36964: fs/9p: only translate RWX permissions for plain 9P2000
First published: Mon Jun 03 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: fs/9p: only translate RWX permissions for plain 9P2000 Garbage in plain 9P2000's perm bits is allowed through, which causes it to be able to set (among others) the suid bit. This was presumably not the intent since the unix extended bits are handled explicitly and conditionally on .u.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 |
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Reference Links
- https://git.kernel.org/stable/c/157d468e34fdd3cb1ddc07c2be32fb3b02826b02
- https://git.kernel.org/stable/c/5a605930e19f451294bd838754f7d66c976a8a2c
- https://git.kernel.org/stable/c/ad4f65328661392de74e3608bb736fedf3b67e32
- https://git.kernel.org/stable/c/ca9b5c81f0c918c63d73d962ed8a8e231f840bc8
- https://git.kernel.org/stable/c/cd25e15e57e68a6b18dc9323047fe9c68b99290b
- https://git.kernel.org/stable/c/df1962a199783ecd66734d563caf0fedecf08f96
- https://git.kernel.org/stable/c/e55c601af3b1223a84f9f27f9cdbd2af5e203bf3
- https://git.kernel.org/stable/c/e90bc596a74bb905e0a45bf346038c3f9d1e868d
- https://launchpad.net/bugs/cve/CVE-2024-36964
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-36964
- https://nvd.nist.gov/vuln/detail/CVE-2024-36964
- https://security-tracker.debian.org/tracker/CVE-2024-36964
- https://ubuntu.com/security/CVE-2024-36964
- https://git.kernel.org/linus/cd25e15e57e68a6b18dc9323047fe9c68b99290b
Frequently Asked Questions
What is the severity of CVE-2024-36964?
CVE-2024-36964 has been classified as a high-severity vulnerability affecting the Linux kernel.
How do I fix CVE-2024-36964?
To fix CVE-2024-36964, update the Linux kernel to the recommended versions: 5.10.223-1, 5.10.226-1, 6.1.119-1, 6.1.123-1, 6.12.11-1, or 6.12.12-1.
What are the consequences of CVE-2024-36964?
CVE-2024-36964 can allow unauthorized setting of permission bits, potentially enabling a suid bit to be set on files.
Is CVE-2024-36964 related to any specific Linux systems?
CVE-2024-36964 affects Debian's Linux kernel and its associated versions.
When was CVE-2024-36964 reported?
CVE-2024-36964 was reported and subsequently resolved in recent updates to the Linux kernel.
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