Description
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().
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 8459d61fbf24967839a70235165673148c7c7f17, < 2dcc86fefe09ac853158afd96b60d544af115dc5; >= 5071beb59ee416e8ab456ac8647a4dabcda823b1, < 9a3c1ad93e6fba67b3a637cfa95a57a6685e4908; >= 997ae8da14f1639ce6fb66a063dab54031cd61b3, < 65ed89cad1f57034c256b016e89e8c0a4ec7c65b; >= 51e34db64f4e43c7b055ccf881b7f3e0c31bb26d, < d0eb14cb8c08b00c36a3d5dc57a6f428b301f721; >= e8c526f2bdf1845bedaf6a478816a3d06fa78b8f, < 6d845028609a4af0ad66f499ee0bd5789122b067; >= e8c526f2bdf1845bedaf6a478816a3d06fa78b8f, < c31e72d021db2714df03df6c42855a1db592716c; 106e457953315e476b3642ef24be25ed862aaba3; c964bf65f80a14288d767023a1b300b30f5b9cd0; >= 5.15.170, < 5.15.174; >= 6.1.115, < 6.1.120; >= 6.6.59, < 6.6.64; >= 6.11.6, < 6.11.11; >= 5.4.293, < 5.5; >= 5.10.237, < 5.11 |
| Linux | Linux | 6.12 |
References
- https://git.kernel.org/stable/c/2dcc86fefe09ac853158afd96b60d544af115dc5Patch
- https://git.kernel.org/stable/c/65ed89cad1f57034c256b016e89e8c0a4ec7c65bPatch
- https://git.kernel.org/stable/c/6d845028609a4af0ad66f499ee0bd5789122b067Patch
- https://git.kernel.org/stable/c/9a3c1ad93e6fba67b3a637cfa95a57a6685e4908Patch
- https://git.kernel.org/stable/c/c31e72d021db2714df03df6c42855a1db592716cPatch
- https://git.kernel.org/stable/c/d0eb14cb8c08b00c36a3d5dc57a6f428b301f721Patch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
Timeline
- Published
- Dec 27, 2024
- Last modified
- Aug 4, 2026
- NVD status
- Modified