CVE-2022-49103
NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify()
MEDIUM 5.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.25 % · percentile 16 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: NFSv4.2: fix reference count leaks in _nfs42_proc_copy_notify() [You don't often get email from xiongx18@fudan.edu.cn. Learn why this is important at http://aka.ms/LearnAboutSenderIdentification.] The reference counting issue happens in two error paths in the function _nfs42_proc_copy_notify(). In both error paths, the function simply returns the error code and forgets to balance the refcount of object `ctx`, bumped by get_nfs_open_context() earlier, which may cause refcount leaks. Fix it by balancing refcount of the `ctx` object before the function returns in both error paths.
References
- https://git.kernel.org/stable/c/9b9feec97c1fc7dd9bb69f62c4905cddf1801599
- https://git.kernel.org/stable/c/b37f482ba9f0e6382c188e3fccf6c4b2fdc938eb
- https://git.kernel.org/stable/c/fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4
- https://git.kernel.org/stable/c/f46f632f9cfae4b2e3635fa58840a8ec584c42e3
- https://git.kernel.org/stable/c/b7f114edd54326f730a754547e7cfb197b5bc132
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| 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 | CISA-ADP |
| 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) |
| 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 · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2022-55103
- GCVE · GCVE-0-2022-49103
CERT-FR advisories
- CERTFR-2025-AVI-1057 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0336 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0307 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0252 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*< 5.10.111cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.34cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.16.20cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.17 < 5.17.3
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 0491567b51efeca807da1125a1a0d5193875e286 < 9b9feec97c1fc7dd9bb69f62c4905cddf1801599 ; affected 0491567b51efeca807da1125a1a0d5193875e286 < b37f482ba9f0e6382c188e3fccf6c4b2fdc938eb ; affected 0491567b51efeca807da1125a1a0d5193875e286 < fb73bf6305f4eb8f0cf9a61ee874d55f019d6dc4 ; affected 0491567b51efeca807da1125a1a0d5193875e286 < f46f632f9cfae4b2e3635fa58840a8ec584c42e3 ; affected 0491567b51efeca807da1125a1a0d5193875e286 < b7f114edd54326f730a754547e7cfb197b5bc132 |
| Linux · Linux | affected 5.5 ; unaffected 0 < 5.5 ; unaffected 5.10.111 ≤ 5.10.* ; unaffected 5.15.34 ≤ 5.15.* ; unaffected 5.16.20 ≤ 5.16.* ; unaffected 5.17.3 ≤ 5.17.* |
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 |