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.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: coresight: ultrasoc-smb: Fix OOB write in smb_sync_perf_buffer() When the SMB sink is used as a perf AUX sink, smb_update_buffer() calls smb_sync_perf_buffer() to copy hardware trace data into the perf AUX ring buffer pages. It derives pg_idx = head >> PAGE_SHIFT from @head, which is handle->head, and indexes dst_pages[pg_idx]. The pg_idx %= nr_pages normalization is only applied after the first loop iteration. This leaves the initial page index underived from the buffer size, which can result in an out-of-bounds write past dst_pages[] when head exceeds the AUX buffer size. Normalize head modulo the AUX buffer size before deriving the page index and offset, mirroring tmc_etr_sync_perf_buffer().
Засегнати продукти
- Linux Linux: 06f5c2926aaa0fba7f99678da6ef77cbbbda1441 преди 38dbc8db8341ccdf8e1e1a067453d33ad751864b; 06f5c2926aaa0fba7f99678da6ef77cbbbda1441 преди 4c5a0a946373da99a80398289b28845b5ae40cd1; 06f5c2926aaa0fba7f99678da6ef77cbbbda1441 преди 661a019ac0413ecec9e5d1dfcc12fbca8e78d5fb; 06f5c2926aaa0fba7f99678da6ef77cbbbda1441 преди daf6246ab988fc8bdc82ad7c8d0b1c182d11b15f; 06f5c2926aaa0fba7f99678da6ef77cbbbda1441 преди 98495b5a4d77dd22e106f462b76e1093a55b29a7
- Linux Linux: 6.3; преди 6.3; 6.6.145 до 6.6.*; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 нататък
История
- 25 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-64402
- https://nvd.nist.gov/vuln/detail/CVE-2026-64402
- https://git.kernel.org/stable/c/38dbc8db8341ccdf8e1e1a067453d33ad751864b
- https://git.kernel.org/stable/c/4c5a0a946373da99a80398289b28845b5ae40cd1
- https://git.kernel.org/stable/c/661a019ac0413ecec9e5d1dfcc12fbca8e78d5fb
- https://git.kernel.org/stable/c/daf6246ab988fc8bdc82ad7c8d0b1c182d11b15f
- https://git.kernel.org/stable/c/98495b5a4d77dd22e106f462b76e1093a55b29a7