CVE-2022-49339
net: ipv6: unexport __init-annotated seg6_hmac_init()
At a glance
- Source
- NVD
- EPSS
- EPSS 0.28 % · percentile 20 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: net: ipv6: unexport __init-annotated seg6_hmac_init() 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 caller (net/ipv6/seg6.c) and the callee (net/ipv6/seg6_hmac.c) belong to the same module. It seems an internal function call in ipv6.ko.
References
- https://git.kernel.org/stable/c/64aef8efe96c1616142c4476a05731306fc4494e
- https://git.kernel.org/stable/c/ab8b2c2de273ec1d698a18e399896a6febb5cda0
- https://git.kernel.org/stable/c/317260b3eb6384a05a8af212308fa50f3b2e8290
- https://git.kernel.org/stable/c/5d9c1b081ad28c852a97e10dd75412546497694a
- https://git.kernel.org/stable/c/1084716f76c8045eadf92a9d9a62641f3c8d8c90
- https://git.kernel.org/stable/c/3e6de5037148c5a93a436b1e8d2edad3dac11755
- https://git.kernel.org/stable/c/9ba4416b831eeb4d185e88e73488d1d21288e63a
- https://git.kernel.org/stable/c/5801f064e35181c71857a80ff18af4dbec3c5f5c
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-2022-54889
- GCVE · GCVE-0-2022-49339
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:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.283cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.247cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.198cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.122cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.47cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.17.15cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.18 < 5.18.4cpe:2.3:o:linux:linux_kernel:5.19:rc1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected bf355b8d2c30a289232042cacc1cfaea4923936c < 64aef8efe96c1616142c4476a05731306fc4494e ; affected bf355b8d2c30a289232042cacc1cfaea4923936c < ab8b2c2de273ec1d698a18e399896a6febb5cda0 ; affected bf355b8d2c30a289232042cacc1cfaea4923936c < 317260b3eb6384a05a8af212308fa50f3b2e8290 ; affected bf355b8d2c30a289232042cacc1cfaea4923936c < 5d9c1b081ad28c852a97e10dd75412546497694a ; affected bf355b8d2c30a289232042cacc1cfaea4923936c < 1084716f76c8045eadf92a9d9a62641f3c8d8c90 ; affected bf355b8d2c30a289232042cacc1cfaea4923936c < 3e6de5037148c5a93a436b1e8d2edad3dac11755 |
| Linux · Linux | affected 4.10 ; unaffected 0 < 4.10 ; unaffected 4.14.283 ≤ 4.14.* ; unaffected 4.19.247 ≤ 4.19.* ; unaffected 5.4.198 ≤ 5.4.* ; unaffected 5.10.122 ≤ 5.10.* |
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 |