CVE-2026-46093: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: take vmap_purge_lock in shrinker decay_va_pool_node() can be invoked concurrently from two paths: __purge_vmap_area_lazy() when pools are being purged, and the shrinker via vmap_node_shrink_scan(). However, decay_va_pool_node() is not safe to run concurrently, and the shrinker path currently lacks serialization, leading to races and possible leaks. Protect decay_va_pool_node() by taking vmap_purge_lock in the shrinker path to ensure serialization with purge users.

Засегнати продукти

• Linux Linux: 7679ba6b36dbb300b757b672d6a32a606499e14b преди c15ff206ba78820bf2873d0c668a882e99f4b631; 7679ba6b36dbb300b757b672d6a32a606499e14b преди 687ccdf582169cd680aeaf24cc953807c4cd4345; 7679ba6b36dbb300b757b672d6a32a606499e14b преди 12f2341b4c235d5593a433abac201c1c6725787f; 7679ba6b36dbb300b757b672d6a32a606499e14b преди ec05f51f1e65bce95528543eb73fda56fd201d94
• Linux Linux: 6.9; преди 6.9; 6.12.96 до 6.12.*; 6.18.27 до 6.18.*; 7.0.4 до 7.0.*; от 7.1 нататък

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-2026-46093
• https://nvd.nist.gov/vuln/detail/CVE-2026-46093
• https://git.kernel.org/stable/c/c15ff206ba78820bf2873d0c668a882e99f4b631
• https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345
• https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f
• https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94