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This is experimental automated Linux kernel CVE triage research. Results are heuristic and may be incorrect. This site is not an official vendor advisory or severity source.
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1. [CVE-2026-99270][MODERATE 7.0] 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. Fixes: 83fccfc ("inet: fix potential deadlock in reqsk_queue_unlink()") Reported-by: Damiano Melotti <[email protected]> Signed-off-by: Kuniyuki Iwashima <[email protected]> Link: https://patch.msgid.link/[email protected] Signed-off-by: Jakub Kicinski <[email protected]>
   - by AL-KERNEL @ 2026-11-04  3:04 UTC [21%]


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