clocksource: hyper-v: unexport __init-annotated hv_init_clocksource() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.27 % · percentile 20 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: clocksource: hyper-v: unexport __init-annotated hv_init_clocksource() EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic. modpost used to detect it, but it has been broken for a decade. Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds. There are two ways to fix it: - Remove __init - Remove EXPORT_SYMBOL I chose the latter for this case because the only in-tree call-site, arch/x86/kernel/cpu/mshyperv.c is never compiled as modular. (CONFIG_HYPERVISOR_GUEST is boolean)
Weaknesses (CWE)
- CWE-908 — Use of Uninitialized Resource
References
- https://git.kernel.org/stable/c/cff3a7ce6e81418b6e8bac941779bbf5d342d626
- https://git.kernel.org/stable/c/db965e2757d95f695e606856418cd84003dd036d
- https://git.kernel.org/stable/c/0414eab7c78f3518143d383e448d44fc573ac6d2
- https://git.kernel.org/stable/c/937fcbb55a1e48a6422e87e8f49422c92265f102
- https://git.kernel.org/stable/c/245b993d8f6c4e25f19191edfbd8080b645e12b1
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 | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2022-54509
- GCVE · GCVE-0-2022-49726
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:*:*:*:*:*:*:*:*≥ 5.3 < 5.4.200cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.124cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.49cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.18.6cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.19:rc2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected dd2cb348613b44f9d948b068775e159aad298599 < cff3a7ce6e81418b6e8bac941779bbf5d342d626 ; affected dd2cb348613b44f9d948b068775e159aad298599 < db965e2757d95f695e606856418cd84003dd036d ; affected dd2cb348613b44f9d948b068775e159aad298599 < 0414eab7c78f3518143d383e448d44fc573ac6d2 ; affected dd2cb348613b44f9d948b068775e159aad298599 < 937fcbb55a1e48a6422e87e8f49422c92265f102 ; affected dd2cb348613b44f9d948b068775e159aad298599 < 245b993d8f6c4e25f19191edfbd8080b645e12b1 |
| Linux · Linux | affected 5.3 ; unaffected 0 < 5.3 ; unaffected 5.4.200 ≤ 5.4.* ; unaffected 5.10.124 ≤ 5.10.* ; unaffected 5.15.49 ≤ 5.15.* ; unaffected 5.18.6 ≤ 5.18.* |
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 |