CVE-2024-38662

bpf: Allow delete from sockmap/sockhash only if update is allowed

State: Published
Severity: Not scored
Published: Jun 21, 2024
Updated: Oct 15, 2026
Reserved: Jun 21, 2024

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	dd54b48db0c822ae7b520bc80751f0a0a173ef75 to before 29467edc23818dc5a33042ffb4920b49b090e63dAffected d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec to before 11e8ecc5b86037fec43d07b1c162e233e131b1d9Affected a44770fed86515eedb5a7c00b787f847ebb134a5 to before 6693b172f008846811f48a099f33effc26068e1eAffected 668b3074aa14829e2ac2759799537a93b60fef86 to before 000a65bf1dc04fb2b65e2abf116f0bc0fc2ee7b1Affected ff91059932401894e6c86341915615c5eb0eca48 to before b81e1c5a3c70398cf76631ede63a03616ed1ba3cAffected ff91059932401894e6c86341915615c5eb0eca48 to before 98e948fb60d41447fd8d2d0c3b8637fc6b6dc26dAffected f7990498b05ac41f7d6a190dc0418ef1d21bf058Affected 6af057ccdd8e7619960aca1f0428339f213b31cdAffected 5.10.215 to before 5.10.219Affected 5.15.154 to before 5.15.161Affected 6.1.85 to before 6.1.93Affected 6.6.26 to before 6.6.33Affected 5.4.274 to before 5.5Affected 6.8.5 to before 6.9Affected
LinuxLinux	6.9Affected before 6.9Not affected 5.10.219 through 5.10.Not affected 5.15.161 through 5.15.Not affected 6.1.93 through 6.1.Not affected 6.6.33 through 6.6.Not affected 6.9.4 through 6.9.*Not affected 6.10 and laterNot affected

Product

Versions

LinuxLinux

dd54b48db0c822ae7b520bc80751f0a0a173ef75 to before 29467edc23818dc5a33042ffb4920b49b090e63dAffected
d1e73fb19a4c872d7a399ad3c66e8ca30e0875ec to before 11e8ecc5b86037fec43d07b1c162e233e131b1d9Affected
a44770fed86515eedb5a7c00b787f847ebb134a5 to before 6693b172f008846811f48a099f33effc26068e1eAffected
668b3074aa14829e2ac2759799537a93b60fef86 to before 000a65bf1dc04fb2b65e2abf116f0bc0fc2ee7b1Affected
ff91059932401894e6c86341915615c5eb0eca48 to before b81e1c5a3c70398cf76631ede63a03616ed1ba3cAffected
ff91059932401894e6c86341915615c5eb0eca48 to before 98e948fb60d41447fd8d2d0c3b8637fc6b6dc26dAffected
f7990498b05ac41f7d6a190dc0418ef1d21bf058Affected
6af057ccdd8e7619960aca1f0428339f213b31cdAffected
5.10.215 to before 5.10.219Affected
5.15.154 to before 5.15.161Affected
6.1.85 to before 6.1.93Affected
6.6.26 to before 6.6.33Affected
5.4.274 to before 5.5Affected
6.8.5 to before 6.9Affected

LinuxLinux

6.9Affected
before 6.9Not affected
5.10.219 through 5.10.*Not affected
5.15.161 through 5.15.*Not affected
6.1.93 through 6.1.*Not affected
6.6.33 through 6.6.*Not affected
6.9.4 through 6.9.*Not affected
6.10 and laterNot affected

References

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