Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3e1c6f35409f9e447bf37f64840f5b65576bfb78 before e03253f5d65ebcd2a6d479f140c3bd9c7e4fb84a; affected 3e1c6f35409f9e447bf37f64840f5b65576bfb78 before cd12d3e08620257fbcaa262785d7f4b9473afc7a; affected 3e1c6f35409f9e447bf37f64840f5b65576bfb78 before 86a0e945fb645ea90233fde239cd2de79f01974c; affected 3e1c6f35409f9e447bf37f64840f5b65576bfb78 before a11212910cf09b2fe8db9afa41ef60c4f81879c5 |
| Linux / Linux | affected 6.10; unaffected 0 before 6.10; unaffected 6.12.112 through 6.12.*; unaffected 6.18.55 through 6.18.*; unaffected 7.2.9 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.