CVE-2024-53099: bpf: Check validity of link->type in bpf_link_show_fdinfo()
First published: Mon Nov 25 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: bpf: Check validity of link->type in bpf_link_show_fdinfo() If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing bpf_link_type_strs[link->type] may result in an out-of-bounds access. To spot such missed invocations early in the future, checking the validity of link->type in bpf_link_show_fdinfo() and emitting a warning when such invocations are missed.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <6.6.62 | |
| Linux Kernel | >=6.7<6.11.9 | |
| Linux Kernel | =6.12-rc1 | |
| Linux Kernel | =6.12-rc2 | |
| Linux Kernel | =6.12-rc3 | |
| Linux Kernel | =6.12-rc4 | |
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
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Reference Links
- https://git.kernel.org/stable/c/79f87a6ec39fb5968049a6775a528bf58b25c20a
- https://git.kernel.org/stable/c/24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d
- https://git.kernel.org/stable/c/4e8074bb33d18f56af30a0252cb3606d27eb1c13
- https://git.kernel.org/stable/c/d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d
- https://git.kernel.org/stable/c/b3eb1b6a9f745d6941b345f0fae014dc8bb06d36
- https://git.kernel.org/stable/c/8421d4c8762bd022cb491f2f0f7019ef51b4f0a7
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-53099
- https://nvd.nist.gov/vuln/detail/CVE-2024-53099
- https://launchpad.net/bugs/cve/CVE-2024-53099
- https://security-tracker.debian.org/tracker/CVE-2024-53099
- https://ubuntu.com/security/CVE-2024-53099
- https://git.kernel.org/linus/8421d4c8762bd022cb491f2f0f7019ef51b4f0a7
Frequently Asked Questions
What is the severity of CVE-2024-53099?
CVE-2024-53099 has been rated as a medium severity vulnerability.
How do I fix CVE-2024-53099?
To fix CVE-2024-53099, update your Linux kernel to version 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.15-1.
Which versions of the Linux kernel are affected by CVE-2024-53099?
CVE-2024-53099 affects Linux kernel versions from 6.7 to 6.11.9 and specific release candidates in version 6.12.
What is the nature of the vulnerability described in CVE-2024-53099?
CVE-2024-53099 involves an out-of-bounds access due to improper handling of a new link type in BPF.
Is CVE-2024-53099 exploitable?
Yes, CVE-2024-53099 is potentially exploitable, which could lead to a denial of service or code execution.
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