CVE-2022-50167

bpf: fix potential 32-bit overflow when accessing ARRAY map element

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.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

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

Frequently Asked Questions

What is the severity of CVE-2022-50167?: CVE-2022-50167 has not yet been assigned a CVSS score.
How to fix CVE-2022-50167?: To fix CVE-2022-50167, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-50167 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-50167 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-50167?: CVE-2022-50167 affects Linux Linux, Linux Linux.

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