CVE-2026-99270
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.
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The sources do not list affected products or versions for this vulnerability yet.
No weakness classification (CWE) has been assigned yet.
0.3%27th percentile
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Published
First publication at the source
Collected
First seen by Baba Yaga Security
Last modified
Latest change at the source