Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Avoid splat in pskb_pull_reason syzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug hint in pskb_may_pull. We'd like to retain this debug check because it might hint at integer overflows and other issues (kernel code should pull headers, not huge value). In bpf case, this splat isn't interesting at all: such (nonsensical) bpf programs are typically generated by a fuzzer anyway. Do what Eric suggested and suppress such warning. For CONFIG_DEBUG_NET=n we don't need the extra check because pskb_may_pull will do the right thing: return an error without the WARN() backtrace.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
8af60bb2b215f478b886f1d6d302fefa7f0b917d to < dacc15e9cb248d19e5fc63c54bef0b9b55007761affected1b2b26595bb09febf14c5444c873ac4ec90a5a77 to < 7f9644782c559635bd676c12c59389a34ed7c866affected219eee9c0d16f1b754a8b85275854ab17df0850a to < 5e90258303a358e88737afb5048bee9113beea3aaffected219eee9c0d16f1b754a8b85275854ab17df0850a to < 2bbe3e5a2f4ef69d13be54f1cf895b4658287080affectedfff05b2b004d9a8a2416d08647f3dc9068e357c8affected6.1.86 to < 6.1.96affected6.6.27 to < 6.6.36affected6.8.6 to < 6.9affected
Linux Linux
Default version status: affected
6.9affected0 to < 6.9unaffected6.1.96 to ≤ 6.1.*unaffected6.6.36 to ≤ 6.6.*unaffected6.9.7 to ≤ 6.9.*unaffected6.10 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/dacc15e9cb248d19e5fc63c54bef0b9b55007761 ↗
- https://git.kernel.org/stable/c/7f9644782c559635bd676c12c59389a34ed7c866 ↗
- https://git.kernel.org/stable/c/5e90258303a358e88737afb5048bee9113beea3a ↗
- https://git.kernel.org/stable/c/2bbe3e5a2f4ef69d13be54f1cf895b4658287080 ↗
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html ↗