Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Require a BPF cpumask for bpf_cpumask_populate() bpf_cpumask_populate() writes to its destination with bitmap_copy(), but the destination is typed as struct cpumask *. That allows the verifier to accept borrowed cpumask pointers returned by read-only kfuncs, such as scx_bpf_get_online_cpumask(), as a writable destination. Make the destination a struct bpf_cpumask * so populate follows the same ownership rule as the other mutating cpumask kfuncs. Query kfuncs continue to accept const struct cpumask * inputs.
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
950ad93df2fce70445e655ed2e74f5c1a8653ab2 to < 0cfc9348a045da64955af2dd6902e66dfc7d6469affected950ad93df2fce70445e655ed2e74f5c1a8653ab2 to < b7e2a5c6519adc73be55c3de2cb545e095a0fbc5affected950ad93df2fce70445e655ed2e74f5c1a8653ab2 to < 8740156ad33be5071b588b594c55f279457f667caffected
Linux Linux
Default version status: affected
6.15affected0 to < 6.15unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected