phy: mdio: fix memory leak (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.23 % · percentile 14 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: phy: mdio: fix memory leak Syzbot reported memory leak in MDIO bus interface, the problem was in wrong state logic. MDIOBUS_ALLOCATED indicates 2 states: 1. Bus is only allocated 2. Bus allocated and __mdiobus_register() fails, but device_register() was called In case of device_register() has been called we should call put_device() to correctly free the memory allocated for this device, but mdiobus_free() calls just kfree(dev) in case of MDIOBUS_ALLOCATED state To avoid this behaviour we need to set bus->state to MDIOBUS_UNREGISTERED _before_ calling device_register(), because put_device() should be called even in case of device_register() failure.
Weaknesses (CWE)
- CWE-401 — Missing Release of Memory after Effective Lifetime
References
- https://git.kernel.org/stable/c/25e9f88c7e3cc35f5e3d3db199660d28a15df639
- https://git.kernel.org/stable/c/2250392d930bd0d989f24d355d6355b0150256e7
- https://git.kernel.org/stable/c/f4f502a04ee1e543825af78f47eb7785015cd9f6
- https://git.kernel.org/stable/c/2397b9e118721292429fea8807a698e71b94795f
- https://git.kernel.org/stable/c/414bb4ead1362ef2c8592db723c017258f213988
- https://git.kernel.org/stable/c/0d2dd40a7be61b89a7c99dae8ee96389d27b413a
- https://git.kernel.org/stable/c/064c2616234a7394867c924b5c1303974f3a4f4d
- https://git.kernel.org/stable/c/ca6e11c337daf7925ff8a2aac8e84490a8691905
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-2021-34421
- GCVE · GCVE-0-2021-47416
CERT-FR advisories
- CERTFR-2025-AVI-0024 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1102 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1048 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-1033 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0999 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0526 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0496 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 2.6.28 < 4.4.289cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.5 < 4.9.287cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.251cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.211cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.153cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.73cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.14.12cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 46abc02175b3c246dd5141d878f565a8725060c9 < 25e9f88c7e3cc35f5e3d3db199660d28a15df639 ; affected 46abc02175b3c246dd5141d878f565a8725060c9 < 2250392d930bd0d989f24d355d6355b0150256e7 ; affected 46abc02175b3c246dd5141d878f565a8725060c9 < f4f502a04ee1e543825af78f47eb7785015cd9f6 ; affected 46abc02175b3c246dd5141d878f565a8725060c9 < 2397b9e118721292429fea8807a698e71b94795f ; affected 46abc02175b3c246dd5141d878f565a8725060c9 < 414bb4ead1362ef2c8592db723c017258f213988 ; affected 46abc02175b3c246dd5141d878f565a8725060c9 < 0d2dd40a7be61b89a7c99dae8ee96389d27b413a |
| Linux · Linux | affected 2.6.28 ; unaffected 0 < 2.6.28 ; unaffected 4.4.289 ≤ 4.4.* ; unaffected 4.9.287 ≤ 4.9.* ; unaffected 4.14.251 ≤ 4.14.* ; unaffected 4.19.211 ≤ 4.19.* |
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 |