CVE-2026-97521: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: gfs2: fix quota init duplicate scan gfs2_quota_init() checks for duplicate quota_change IDs while holding qd_lock and the quota hash bucket bitlock. That path used gfs2_qd_search_bucket(), which takes a lockref reference via lockref_get_not_dead(). On PREEMPT_RT this may sleep, which is not allowed under the bucket bitlock, triggering "sleeping function called from invalid context". Use a no-ref bucket lookup in this path, then continue duplicate handling without taking a lockref there. Refactor gfs2_qd_search_bucket() to build on top of the no-ref helper so lookup traversal stays in one place. This patch fixes a bug reported by syzbot.

Засегнати продукти

• Linux Linux: de0d95c26c41c1776e4d23b1a8b3f2bcfd1dae5f преди 7fdcf16e5e14e11028f5bcaa6d25075eb5e876a0; de0d95c26c41c1776e4d23b1a8b3f2bcfd1dae5f преди 812a766e2b0a8f4d094393fad13475c57f5f86db; de0d95c26c41c1776e4d23b1a8b3f2bcfd1dae5f преди b99a1f0f18ee50445907f55069e88bcfd8947383
• Linux Linux: 6.11; преди 6.11; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; 7.2 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-97521
• https://nvd.nist.gov/vuln/detail/CVE-2026-97521
• https://git.kernel.org/stable/c/7fdcf16e5e14e11028f5bcaa6d25075eb5e876a0
• https://git.kernel.org/stable/c/812a766e2b0a8f4d094393fad13475c57f5f86db
• https://git.kernel.org/stable/c/b99a1f0f18ee50445907f55069e88bcfd8947383