Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Allow delete from sockmap/sockhash only if update is allowed We have seen an influx of syzkaller reports where a BPF program attached to a tracepoint triggers a locking rule violation by performing a map_delete on a sockmap/sockhash. We don't intend to support this artificial use scenario. Extend the existing verifier allowed-program-type check for updating sockmap/sockhash to also cover deleting from a map. From now on only BPF programs which were previously allowed to update sockmap/sockhash can delete from these map types.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.10, < 5.10.219 |
References
- https://git.kernel.org/stable/c/000a65bf1dc04fb2b65e2abf116f0bc0fc2ee7b1Mailing ListPatch
- https://git.kernel.org/stable/c/11e8ecc5b86037fec43d07b1c162e233e131b1d9Mailing ListPatch
- https://git.kernel.org/stable/c/29467edc23818dc5a33042ffb4920b49b090e63dMailing ListPatch
- https://git.kernel.org/stable/c/6693b172f008846811f48a099f33effc26068e1eMailing ListPatch
- https://git.kernel.org/stable/c/98e948fb60d41447fd8d2d0c3b8637fc6b6dc26dMailing ListPatch
- https://git.kernel.org/stable/c/b81e1c5a3c70398cf76631ede63a03616ed1ba3cMailing ListPatch
- https://git.kernel.org/stable/c/000a65bf1dc04fb2b65e2abf116f0bc0fc2ee7b1Mailing ListPatch
- https://git.kernel.org/stable/c/11e8ecc5b86037fec43d07b1c162e233e131b1d9Mailing ListPatch
- https://git.kernel.org/stable/c/29467edc23818dc5a33042ffb4920b49b090e63dMailing ListPatch
- https://git.kernel.org/stable/c/6693b172f008846811f48a099f33effc26068e1eMailing ListPatch
- https://git.kernel.org/stable/c/98e948fb60d41447fd8d2d0c3b8637fc6b6dc26dMailing ListPatch
- https://git.kernel.org/stable/c/b81e1c5a3c70398cf76631ede63a03616ed1ba3cMailing ListPatch
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
FAQ
What is CVE-2024-38662?
CVE-2024-38662 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: bpf: Allow delete from sockmap/sockhash only if update is allowed We have seen an influx of syzkaller reports where a BPF program ...
How severe is CVE-2024-38662?
CVE-2024-38662 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-38662?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.