Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Check params size before reading reserved fields bpf_crypto_ctx_create() is a kfunc whose second argument is declared with the __sz annotation, so the verifier only guarantees that params__sz bytes of params are valid. The function nevertheless reads params->reserved[0] and params->reserved[1] (offsets 14 and 15) before comparing params__sz against the size of struct bpf_crypto_params, so a BPF program can pass a shorter buffer and have the kernel read past the region that was validated for it. Move the size check in front of the reserved field reads.
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
3e1c6f35409f9e447bf37f64840f5b65576bfb78 to < e03253f5d65ebcd2a6d479f140c3bd9c7e4fb84aaffected3e1c6f35409f9e447bf37f64840f5b65576bfb78 to < cd12d3e08620257fbcaa262785d7f4b9473afc7aaffected3e1c6f35409f9e447bf37f64840f5b65576bfb78 to < 86a0e945fb645ea90233fde239cd2de79f01974caffected3e1c6f35409f9e447bf37f64840f5b65576bfb78 to < a11212910cf09b2fe8db9afa41ef60c4f81879c5affected
Linux Linux
Default version status: affected
6.10affected0 to < 6.10unaffected6.12.112 to ≤ 6.12.*unaffected6.18.55 to ≤ 6.18.*unaffected7.2.9 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected