mcb: fix error handling in mcb_alloc_bus() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.24 % · percentile 15 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: mcb: fix error handling in mcb_alloc_bus() There are two bugs: 1) If ida_simple_get() fails then this code calls put_device(carrier) but we haven't yet called get_device(carrier) and probably that leads to a use after free. 2) After device_initialize() then we need to use put_device() to release the bus. This will free the internal resources tied to the device and call mcb_free_bus() which will free the rest.
Weaknesses (CWE)
- CWE-416 — Use After Free
References
- https://git.kernel.org/stable/c/8a558261fa57a6deefb0925ab1829f698b194aea
- https://git.kernel.org/stable/c/115b07d9f47e3996430b8f2007edd9768e1f807f
- https://git.kernel.org/stable/c/66f74ba9be9daf9c47fface6af3677f602774f6b
- https://git.kernel.org/stable/c/7751f609eadf36b1f53712bae430019c53a16eb0
- https://git.kernel.org/stable/c/91e4ad05bf18322b5921d1a6c9b603f6eb1694f0
- https://git.kernel.org/stable/c/9fc198f415dee070a1de957bb5bf5921d8df3499
- https://git.kernel.org/stable/c/25a1433216489de4abc889910f744e952cb6dbae
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 | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-34366
- GCVE · GCVE-0-2021-47361
CERT-FR advisories
- 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:*:*:*:*:*:*:*:*≥ 4.7 < 4.9.285cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.249cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.209cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.150cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.70cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.14.9cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 18d28819809909c3f24bb72183a901c5e332a63d < 8a558261fa57a6deefb0925ab1829f698b194aea ; affected 18d28819809909c3f24bb72183a901c5e332a63d < 115b07d9f47e3996430b8f2007edd9768e1f807f ; affected 18d28819809909c3f24bb72183a901c5e332a63d < 66f74ba9be9daf9c47fface6af3677f602774f6b ; affected 18d28819809909c3f24bb72183a901c5e332a63d < 7751f609eadf36b1f53712bae430019c53a16eb0 ; affected 18d28819809909c3f24bb72183a901c5e332a63d < 91e4ad05bf18322b5921d1a6c9b603f6eb1694f0 ; affected 18d28819809909c3f24bb72183a901c5e332a63d < 9fc198f415dee070a1de957bb5bf5921d8df3499 |
| Linux · Linux | affected 4.7 ; unaffected 0 < 4.7 ; unaffected 4.9.285 ≤ 4.9.* ; unaffected 4.14.249 ≤ 4.14.* ; unaffected 4.19.209 ≤ 4.19.* ; unaffected 5.4.150 ≤ 5.4.* |
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 |