tcp: Fix use-after-free of nreq in reqsk_timer_handler().
28Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 9.8epss 0.2%
probabilidade de exploração
0.2%top 87% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved:
tcp: Fix use-after-free of nreq in reqsk_timer_handler().
The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with
__inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler().
Then, oreq should be passed to reqsk_put() instead of req; otherwise
use-after-free of nreq could happen when reqsk is migrated but the
retry attempt failed (e.g. due to timeout).
Let's pass oreq to reqsk_put().
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Produtos afetados
Linux · LinuxReferências
https://git.kernel.org/stable/c/2dcc86fefe09ac853158afd96b60d544af115dc5https://git.kernel.org/stable/c/65ed89cad1f57034c256b016e89e8c0a4ec7c65bhttps://git.kernel.org/stable/c/6d845028609a4af0ad66f499ee0bd5789122b067https://git.kernel.org/stable/c/9a3c1ad93e6fba67b3a637cfa95a57a6685e4908https://git.kernel.org/stable/c/c31e72d021db2714df03df6c42855a1db592716chttps://git.kernel.org/stable/c/d0eb14cb8c08b00c36a3d5dc57a6f428b301f721https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html