net: tipc: fix refcount warning in tipc_aead_encrypt (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: net: tipc: fix refcount warning in tipc_aead_encrypt syzbot reported a refcount warning [1] caused by calling get_net() on a network namespace that is being destroyed (refcount=0). This happens when a TIPC discovery timer fires during network namespace cleanup. The recently added get_net() call in commit e279024617134 ("net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done") attempts to hold a reference to the network namespace. However, if the namespace is already being destroyed, its refcount might be zero, leading to the use-after-free warning. Replace get_net() with maybe_get_net(), which safely checks if the refcount is non-zero before incrementing it. If the namespace is being destroyed, return -ENODEV early, after releasing the bearer reference. [1]: https://lore.kernel.org/all/68342b55.a70a0220.253bc2.0091.GAE@google.com/T/#m12019cf9ae77e1954f666914640efa36d52704a2
References
- https://git.kernel.org/stable/c/445d59025d76d0638b03110f8791d5b89ed5162d
- https://git.kernel.org/stable/c/e0b11227c4e8eb4bdf1b86aa8f0f3abb24e0f029
- https://git.kernel.org/stable/c/307391e8fe70401a6d39ecc9978e13c2c0cdf81f
- https://git.kernel.org/stable/c/acab7ca5ff19889b80a8ee7dec220ee1a96dede9
- https://git.kernel.org/stable/c/c762fc79d710d676b793f9d98b1414efe6eb51e6
- https://git.kernel.org/stable/c/9ff60e0d9974dccf24e89bcd3ee7933e538d929f
- https://git.kernel.org/stable/c/f29ccaa07cf3d35990f4d25028cc55470d29372b
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
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) |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2025-20975
- GCVE · GCVE-0-2025-38273
CERT-FR advisories
- CERTFR-2025-AVI-1073 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-1054 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0969 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0894 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0859 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0843 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0828 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0759 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0745 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0723 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0698 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.12.31 < 6.12.34cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.14.9 < 6.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.15.1 < 6.15.3cpe:2.3:o:linux:linux_kernel:5.10.238:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15.185:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.1.141:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6.93:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.15:-:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected d42ed4de6aba232d946d20653a70f79158a6535b < 445d59025d76d0638b03110f8791d5b89ed5162d ; affected f5c2c4eaaa5a8e7e0685ec031d480e588e263e59 < e0b11227c4e8eb4bdf1b86aa8f0f3abb24e0f029 ; affected b8fcae6d2e93c54cacb8f579a77d827c1c643eb5 < 307391e8fe70401a6d39ecc9978e13c2c0cdf81f ; affected b19fc1d0be3c3397e5968fe2627f22e7f84673b1 < acab7ca5ff19889b80a8ee7dec220ee1a96dede9 ; affected 689a205cd968a1572ab561b0c4c2d50a10e9d3b0 < c762fc79d710d676b793f9d98b1414efe6eb51e6 ; affected e279024617134c94fd3e37470156534d5f2b3472 < 9ff60e0d9974dccf24e89bcd3ee7933e538d929f |
| Linux · Linux | affected 6.15 ; unaffected 0 < 6.15 ; unaffected 5.10.239 ≤ 5.10.* ; unaffected 5.15.186 ≤ 5.15.* ; unaffected 6.1.142 ≤ 6.1.* ; unaffected 6.6.94 ≤ 6.6.* |
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 |