CVE-2026-53076

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix OOB in pcpu_init_value An out-of-bounds read occurs when copying element from a BPF_MAP_TYPE_CGROUP_STORAGE map to another pcpu map with the same value_size that is not rounded up to 8 bytes. The issue happens when: 1. A CGROUP_STORAGE map is created with value_size not aligned to 8 bytes (e.g., 4 bytes) 2. A pcpu map is created with the same value_size (e.g., 4 bytes) 3. Update element in 2 with data in 1 pcpu_init_value assumes that all sources are rounded up to 8 bytes, and invokes copy_map_value_long to make a...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= d3bec0138bfbe58606fc1d6f57a4cdc1a20218db < e19c5ed9f1922a6854073f8651a63fa7be26e9e9, >= d3bec0138bfbe58606fc1d6f57a4cdc1a20218db < e0378419b0e20178b5d100b27c9cc7e51064202e, >= d3bec0138bfbe58606fc1d6f57a4cdc1a20218db < 6086079e6d1c32ba4c4b422612b8aebb1129a96c, >= d3bec0138bfbe58606fc1d6f57a4cdc1a20218db < 634a793d0e1c822412095d25a1338f8831ad894c, >= d3bec0138bfbe58606fc1d6f57a4cdc1a20218db < 576afddfee8d1108ee299bf10f581593540d1a36, >= c602ad2b52dcbca5af08e5137bd5575c039b52e3, >= ab68b940dd6f7b5f8e2557937162dcb8a0583a05, >= 5.4.78 < 5.5, >= 5.9.9 < 5.10, >= 5.10, >= 5.10.1 < 6.6.141, >= 6.7 < 6.12.91, >= 6.13 < 6.18.33, >= 6.19 < 7.0.10, 5.10

Fixed versions

5.5, 5.10, 6.6.141, 6.12.91, 6.18.33, 7.0.10

Technical data

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE

CWE-125