CVE-2026-99270: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: tcp: Fix potential UAF in reqsk_timer_handler(). When TCP socket migration fails at inet_ehash_insert() in reqsk_timer_handler(), we jump to the no_ownership: label and free the new reqsk immediately with __reqsk_free(). Thus, we must stop the new reqsk's timer before jumping to the label, but the timer might be missed since the cited commit, resulting in UAF. As we are in the original reqsk's timer context, we can safely call timer_delete_sync() for the new reqsk. Let's pass false to __inet_csk_reqsk_queue_drop() to stop the new reqsk's timer.

Засегнати продукти

• Linux Linux: 83fccfc3940c4a2db90fd7e7079f5b465cd8c6af преди 97c8a3c1f73d828de43a5a88e8a9a143efb2b661; d3a1196bfc462943694623412d8e03aaf172bdc1; 4.1.11 преди 4.2
• Linux Linux: 4.2; преди 4.2; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260
• CVE-2026-99256

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-99270
• https://nvd.nist.gov/vuln/detail/CVE-2026-99270
• https://git.kernel.org/stable/c/97c8a3c1f73d828de43a5a88e8a9a143efb2b661