CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
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 data copy, However, the assumption doesn't stand since there are some cases where the source may not be rounded up to 8 bytes, e.g., CGROUP_STORAGE, skb->data. the verifier verifies exactly the size that the source claims, not the size rounded up to 8 bytes by kernel, an OOB happens when the source has only 4 bytes while the copy size(4) is rounded up to 8.
Засегнати продукти
- Linux Linux: d3bec0138bfbe58606fc1d6f57a4cdc1a20218db преди d138ea2fe01c254413d5a6104eb236e0d5c7dd9a; d3bec0138bfbe58606fc1d6f57a4cdc1a20218db преди e19c5ed9f1922a6854073f8651a63fa7be26e9e9; d3bec0138bfbe58606fc1d6f57a4cdc1a20218db преди e0378419b0e20178b5d100b27c9cc7e51064202e; d3bec0138bfbe58606fc1d6f57a4cdc1a20218db преди 6086079e6d1c32ba4c4b422612b8aebb1129a96c; d3bec0138bfbe58606fc1d6f57a4cdc1a20218db преди 634a793d0e1c822412095d25a1338f8831ad894c; d3bec0138bfbe58606fc1d6f57a4cdc1a20218db преди 576afddfee8d1108ee299bf10f581593540d1a36; c602ad2b52dcbca5af08e5137bd5575c039b52e3; ab68b940dd6f7b5f8e2557937162dcb8a0583a05; 5.4.78 преди 5.5; 5.9.9 преди 5.10
- Linux Linux: 5.10; преди 5.10; 6.1.191 до 6.1.*; 6.6.141 до 6.6.*; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; 7.1 до *
Вид слабост
История
- 24 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-53076
- https://nvd.nist.gov/vuln/detail/CVE-2026-53076
- https://git.kernel.org/stable/c/d138ea2fe01c254413d5a6104eb236e0d5c7dd9a
- https://git.kernel.org/stable/c/e19c5ed9f1922a6854073f8651a63fa7be26e9e9
- https://git.kernel.org/stable/c/e0378419b0e20178b5d100b27c9cc7e51064202e
- https://git.kernel.org/stable/c/6086079e6d1c32ba4c4b422612b8aebb1129a96c
- https://git.kernel.org/stable/c/634a793d0e1c822412095d25a1338f8831ad894c
- https://git.kernel.org/stable/c/576afddfee8d1108ee299bf10f581593540d1a36