CVE-2021-45402

Description

The check_alu_op() function in kernel/bpf/verifier.c in the Linux kernel through v5.16-rc5 did not properly update bounds while handling the mov32 instruction, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."

Weakness classification

• nvd@nist.gov: CWE-668

Primary references

• cve@mitre.org — Exploit, Patch, Vendor Advisory
• cve@mitre.org — Exploit, Patch, Vendor Advisory
• cve@mitre.org — Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory