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Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: disallow non-power of two min_region_sz on damon_start() Commit d8f867fa0825 ("mm/damon: add damon_ctx->min_sz_region") introduced a bug that allows unaligned DAMON region address ranges. Commit c80f46ac228b ("mm/damon/core: disallow non-power of two min_region_sz") fixed it, but only for damon_commit_ctx() use case. Still, DAMON sysfs interface can emit non-power of two min_region_sz via damon_start(). Fix the path by adding the is_power_of_2() check on damon_start(). The issue was discovered by sashiko [1].
Засегнати продукти
- Linux Linux: d8f867fa0825fb3e358457566d7326d8aab2406a преди 1de2db19a6028abe7d905875922faef5b873de67; d8f867fa0825fb3e358457566d7326d8aab2406a преди 89b6226b6c2a4add3939f361653a47c212d6ab75; d8f867fa0825fb3e358457566d7326d8aab2406a преди 95093e5cb4c5b50a5b1a4b79f2942b62744bd66a
- Linux Linux: 6.18; преди 6.18; 6.18.30 до 6.18.*; 7.0.4 до 7.0.*; от 7.1 нататък
История
- 9 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-52905
- https://nvd.nist.gov/vuln/detail/CVE-2026-52905
- https://git.kernel.org/stable/c/1de2db19a6028abe7d905875922faef5b873de67
- https://git.kernel.org/stable/c/89b6226b6c2a4add3939f361653a47c212d6ab75
- https://git.kernel.org/stable/c/95093e5cb4c5b50a5b1a4b79f2942b62744bd66a