CVE-2022-50167 Information

Jun 19, 2025 cve

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.

Reference

https://git.kernel.org/stable/c/063e092534d4c6785228e5b1eb6e9329f66ccbe4 https://git.kernel.org/stable/c/3c7256b880b3a5aa1895fd169a34aa4224a11862 https://git.kernel.org/stable/c/87ac0d600943994444e24382a87aa19acc4cd3d4

CNNVD-202506-2455 (Published: 2025-06-18)

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