CVE-2024-50123: bpf: Add the missing BPF_LINK_TYPE invocation for sockmap
First published: Tue Nov 05 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: bpf: Add the missing BPF_LINK_TYPE invocation for sockmap There is an out-of-bounds read in bpf_link_show_fdinfo() for the sockmap link fd. Fix it by adding the missing BPF_LINK_TYPE invocation for sockmap link Also add comments for bpf_link_type to prevent missing updates in the future.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=6.10<6.11.6 | |
| 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/6d79f12c0ce2bc8ff5f109093df1734bd6450615
- https://git.kernel.org/stable/c/c2f803052bc7a7feb2e03befccc8e49b6ff1f5f5
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50123
- https://nvd.nist.gov/vuln/detail/CVE-2024-50123
- https://launchpad.net/bugs/cve/CVE-2024-50123
- https://security-tracker.debian.org/tracker/CVE-2024-50123
- https://ubuntu.com/security/CVE-2024-50123
- https://git.kernel.org/linus/c2f803052bc7a7feb2e03befccc8e49b6ff1f5f5
Frequently Asked Questions
What is the severity of CVE-2024-50123?
CVE-2024-50123 has a moderate severity level due to the potential for an out-of-bounds read in the Linux kernel.
How do I fix CVE-2024-50123?
To fix CVE-2024-50123, update the Linux kernel to a version that includes the patch for the sockmap link fd issue.
Which versions of the Linux kernel are affected by CVE-2024-50123?
CVE-2024-50123 affects Linux kernel versions from 6.10 up to, but not including, 6.11.6, as well as specific release candidates of 6.12.
What component of the Linux kernel does CVE-2024-50123 impact?
CVE-2024-50123 impacts the BPF subsystem specifically related to sockmap link file descriptors.
Is CVE-2024-50123 a physical or remote vulnerability?
CVE-2024-50123 is considered a remote vulnerability, as it can be exploited through network interfaces.
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