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: drm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise When user provides a bogus pat_index value through the madvise IOCTL, the xe_pat_index_get_coh_mode() function performs an array access without validating bounds. This allows a malicious user to trigger an out-of-bounds kernel read from the xe->pat.table array. The vulnerability exists because the validation in madvise_args_are_sane() directly calls xe_pat_index_get_coh_mode(xe, args->pat_index.val) without first checking if pat_index is within [0, xe->pat.n_entries). Although xe_pat_index_get_coh_mode() has a WARN_ON to catch this in debug builds, it still performs the unsafe array access in production kernels. v2(Matthew Auld) - Using array_index_nospec() to mitigate spectre attacks when the value is used v3(Matthew Auld) - Put the declarations at the start of the block (cherry picked from commit 944a3329b05510d55c69c2ef455136e2fc02de29)
Засегнати продукти
- Linux Linux: ada7486c5668db542a7d361268df931aca5b726a преди ffba51100ff61792fefbae11ca38ac1987a818dd; ada7486c5668db542a7d361268df931aca5b726a преди 79f52655567a6471ff3d0d6325ede91bb14461f4; ada7486c5668db542a7d361268df931aca5b726a преди fbbe32618e97eff81577a01eb7d9adcd64a216d7
- Linux Linux: 6.18; преди 6.18; 6.18.16 до 6.18.*; 6.19.6 до 6.19.*; 7.0 до *
Вид слабост
История
- 6 май 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-43280
- https://nvd.nist.gov/vuln/detail/CVE-2026-43280
- https://git.kernel.org/stable/c/ffba51100ff61792fefbae11ca38ac1987a818dd
- https://git.kernel.org/stable/c/79f52655567a6471ff3d0d6325ede91bb14461f4
- https://git.kernel.org/stable/c/fbbe32618e97eff81577a01eb7d9adcd64a216d7