sctp: fix addr_wq_timer race in sctp_free_addr_wq() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.16 % · percentile 6 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: sctp: fix addr_wq_timer race in sctp_free_addr_wq() sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete() while holding addr_wq_lock. However, timer_delete() does not guarantee that a currently running timer handler has completed. This allows a race with sctp_addr_wq_timeout_handler(), where the handler may still run after addr_waitq has been freed, acquire addr_wq_lock, and access freed memory, leading to a use-after-free. Fix this by calling timer_shutdown_sync() before taking addr_wq_lock. This guarantees that any in-flight timer handler has finished and prevents the timer from being re-armed during teardown, making subsequent cleanup safe.
References
- https://git.kernel.org/stable/c/fb6117713abef8646fdbf58256532451bcf26c47
- https://git.kernel.org/stable/c/5098308ad72f83f3b1a48c247dddab1695114bae
- https://git.kernel.org/stable/c/d49eff15261dd62e4fa3a316c26cb1f537a60464
- https://git.kernel.org/stable/c/a8323fb2ab6cd6978f359daeed6688e0cadf32ba
- https://git.kernel.org/stable/c/c3e5cac47519d77ad36b9c03a1df1536aaa0c4a1
- https://git.kernel.org/stable/c/976c19de0f22a857ba0112f39635f8fd7a257568
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-59282
- GCVE · GCVE-0-2026-72383
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1203 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 < fb6117713abef8646fdbf58256532451bcf26c47 ; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 < 5098308ad72f83f3b1a48c247dddab1695114bae ; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 < d49eff15261dd62e4fa3a316c26cb1f537a60464 ; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 < a8323fb2ab6cd6978f359daeed6688e0cadf32ba ; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 < c3e5cac47519d77ad36b9c03a1df1536aaa0c4a1 ; affected 4db67e808640e3934d82ce61ee8e2e89fd877ba8 < 976c19de0f22a857ba0112f39635f8fd7a257568 |
| Linux · Linux | affected 3.7 ; unaffected 0 < 3.7 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.40 ≤ 6.18.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |