Bluetooth: ISO: hold sk properly in iso_conn_ready (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.26 % · percentile 17 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: hold sk properly in iso_conn_ready sk deref in iso_conn_ready must be done either under conn->lock, or holding a refcount, to avoid concurrent close. conn->sk is currently accessed without either: [Task 1] [Task 2] iso_sock_release iso_conn_ready sk = conn->sk lock_sock(sk) conn->sk = NULL lock_sock(sk) release_sock(sk) iso_sock_kill(sk) UAF on sk deref Fix possible UAF by holding sk refcount in iso_conn_ready(). Also recheck after lock_sock that the socket is still valid. Adjust locking so conn->sk is cleared only under lock_sock.
References
- https://git.kernel.org/stable/c/622180fe44fb52d4d7bafcd67922959823fec263
- https://git.kernel.org/stable/c/44590dc53c9e949d2fed399a571a89c3d7d0b245
- https://git.kernel.org/stable/c/99b65f0ea3370c13687ff870330c425b6ca44e89
- https://git.kernel.org/stable/c/4e9b5e8669b3602a4e01b6d1e9539b72e42c84d5
- https://git.kernel.org/stable/c/1308d72903d792d10b82bc4ef08b8a4452308b04
- https://git.kernel.org/stable/c/0d255e63fcf3f13a570d7ac11678fa1164ac015c
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-59730
- GCVE · GCVE-0-2026-74537
CERT-FR advisories
- CERTFR-2026-AVI-1288 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1255 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1231 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1202 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1164 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 27c24fda62b601d6f9ca5e992502578c4310876f < 622180fe44fb52d4d7bafcd67922959823fec263 ; affected 27c24fda62b601d6f9ca5e992502578c4310876f < 44590dc53c9e949d2fed399a571a89c3d7d0b245 ; affected 27c24fda62b601d6f9ca5e992502578c4310876f < 99b65f0ea3370c13687ff870330c425b6ca44e89 ; affected 27c24fda62b601d6f9ca5e992502578c4310876f < 4e9b5e8669b3602a4e01b6d1e9539b72e42c84d5 ; affected 27c24fda62b601d6f9ca5e992502578c4310876f < 1308d72903d792d10b82bc4ef08b8a4452308b04 ; affected 27c24fda62b601d6f9ca5e992502578c4310876f < 0d255e63fcf3f13a570d7ac11678fa1164ac015c |
| Linux · Linux | affected 5.15 ; unaffected 0 < 5.15 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.114 ≤ 6.12.* ; unaffected 6.18.44 ≤ 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 |