CVE-2022-50167 | BDVDB-2026-282978 Detail
LinuxLinux
Description#
In the Linux kernel, the following vulnerability has been resolved: bpf: fix potential 32-bit overflow when accessing ARRAY map element If BPF array map is bigger than 4GB, element pointer calculation can overflow because both index and elem_size are u32. Fix this everywhere by forcing 64-bit multiplication. Extract this formula into separate small helper and use it consistently in various places. Speculative-preventing formula utilizing index_mask trick is left as is, but explicit u64 casts are added in both places.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/2157ac13db8d5763835f1663bdabda6de744cba8
- https://git.kernel.org/stable/c/f665c56e6836933335e5a4513fc9b0bf47cdf81f
- https://git.kernel.org/stable/c/063e092534d4c6785228e5b1eb6e9329f66ccbe4
- https://git.kernel.org/stable/c/3c7256b880b3a5aa1895fd169a34aa4224a11862
- https://git.kernel.org/stable/c/87ac0d600943994444e24382a87aa19acc4cd3d4
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.