CVE-2023-5345
Use-after-free in Linux kernel's fs/smb/client component
At a glance
- Severity
- HIGH 7.8
- EPSS
- EPSS 0.48 % · percentile 42 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- NVD status
- Analyzed
Description
A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3_fs_context_parse_param, ctx->password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading past commit e6e43b8aa7cd3c3af686caf0c2e11819a886d705.
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 | |
| 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 · cve-coordination@google.com (Secondary) |
| 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 · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2023-57662
- GCVE · GCVE-0-2023-5345
CERT-FR advisories
- CERTFR-2024-AVI-0114 — Multiples vulnérabilités dans le noyau Linux Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0073 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0034 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2023-AVI-1037 — Multiples vulnérabilités dans le noyau Linux de RedHat · cert.ssi.gouv.fr
- CERTFR-2023-AVI-1036 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2023-AVI-1008 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0988 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0977 — Multiples vulnérabilités dans le noyau Linux de Ubuntu · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0925 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0911 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0873 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0841 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.0.16 < 6.1.56cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.2 < 6.5.6cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Kernel | affected 0.0 < 6.6 |
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6e43b8aa7cd3c3af686caf0c2e11819a886d705
- https://kernel.dance/e6e43b8aa7cd3c3af686caf0c2e11819a886d705
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V5PDNWPKAP3WL5RQZ4RIDS6MG32OHH5R/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GISYSL3F6WIEVGHJGLC2MFNTUXHPTKQH/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GPMICQ2HVZO5UAM5KPXHAZKA2U3ZDOO6/
- http://packetstormsecurity.com/files/177029/Kernel-Live-Patch-Security-Notice-LSN-0100-1.html
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 |