CVE-2026-45967: bpf: Return proper address for non-zero offsets in insn array

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-27 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Return proper address for non-zero offsets in insn array The map_direct_value_addr() function of the instruction array map incorrectly adds offset to the resulting address. This is a bug, because later the resolve_pseudo_ldimm64() function adds the offset. Fix it. Corresponding selftests are added in a consequent commit.

Affected products

Linux kernel: from 6.19 before 6.19.4 — fixed in 6.19.4

How to fix

Upgrade to a fixed version: Linux kernel 6.19.4. Check the vendor advisory for mitigations.

References

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