CVE-2024-44996: vsock: fix recursive ->recvmsg calls
First published: Wed Sep 04 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: vsock: fix recursive ->recvmsg calls After a vsock socket has been added to a BPF sockmap, its prot->recvmsg has been replaced with vsock_bpf_recvmsg(). Thus the following recursiion could happen: vsock_bpf_recvmsg() -> __vsock_recvmsg() -> vsock_connectible_recvmsg() -> prot->recvmsg() -> vsock_bpf_recvmsg() again We need to fix it by calling the original ->recvmsg() without any BPF sockmap logic in __vsock_recvmsg().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=6.4<6.6.48 | |
| Linux Linux kernel | >=6.7<6.10.7 | |
| Linux Linux kernel | =6.11-rc1 | |
| Linux Linux kernel | =6.11-rc2 | |
| Linux Linux kernel | =6.11-rc3 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- https://git.kernel.org/stable/c/69139d2919dd4aa9a553c8245e7c63e82613e3fc
- https://git.kernel.org/stable/c/921f1acf0c3cf6b1260ab57a8a6e8b3d5f3023d5
- https://git.kernel.org/stable/c/b4ee8cf1acc5018ed1369150d7bb3e0d0f79e135
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-44996
- https://nvd.nist.gov/vuln/detail/CVE-2024-44996
- https://launchpad.net/bugs/cve/CVE-2024-44996
- https://security-tracker.debian.org/tracker/CVE-2024-44996
- https://ubuntu.com/security/CVE-2024-44996
- https://git.kernel.org/linus/69139d2919dd4aa9a553c8245e7c63e82613e3fc
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