CVE-2026-64253: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: kernel/fork: clear PF_BLOCK_TS in copy_process() PF_BLOCK_TS is only set in blk_time_get_ns() when current->plug is non-NULL, and blk_finish_plug() clears it via __blk_flush_plug() before NULLing the plug pointer. copy_process() breaks the invariant by inheriting PF_BLOCK_TS from the parent while resetting the child's plug to NULL. Clear PF_BLOCK_TS alongside that assignment so callers can rely on "PF_BLOCK_TS set implies current->plug != NULL" and dereference current->plug unguarded.

Засегнати продукти

• Linux Linux: 06b23f92af87a84d70881b2ecaa72e00f7838264 преди ee0801aceabdf583392477baf69a290b09448b8f; 06b23f92af87a84d70881b2ecaa72e00f7838264 преди 99e6c712cc300883b8cbf03347d5359ec1a4d6dd; 06b23f92af87a84d70881b2ecaa72e00f7838264 преди 77bba61a20f1b3d206f4f90e10a7bb3cd90b9619; 06b23f92af87a84d70881b2ecaa72e00f7838264 преди fd38b75c4b43295b10d69772a46d1c74dbd6fc81
• Linux Linux: 6.9; преди 6.9; 6.12.95 до 6.12.*; 6.18.38 до 6.18.*; 7.1.3 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64253
• https://nvd.nist.gov/vuln/detail/CVE-2026-64253
• https://git.kernel.org/stable/c/ee0801aceabdf583392477baf69a290b09448b8f
• https://git.kernel.org/stable/c/99e6c712cc300883b8cbf03347d5359ec1a4d6dd
• https://git.kernel.org/stable/c/77bba61a20f1b3d206f4f90e10a7bb3cd90b9619
• https://git.kernel.org/stable/c/fd38b75c4b43295b10d69772a46d1c74dbd6fc81