net: hso: fix NULL-deref on disconnect regression (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.26 % · percentile 18 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: net: hso: fix NULL-deref on disconnect regression Commit 8a12f8836145 ("net: hso: fix null-ptr-deref during tty device unregistration") fixed the racy minor allocation reported by syzbot, but introduced an unconditional NULL-pointer dereference on every disconnect instead. Specifically, the serial device table must no longer be accessed after the minor has been released by hso_serial_tty_unregister().
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
- https://git.kernel.org/stable/c/5871761c5f0f20d6e98bf3b6bd7486d857589554
- https://git.kernel.org/stable/c/0c71d4c89559f72cec2592d078681a843bce570e
- https://git.kernel.org/stable/c/24b699bea7553fc0b98dad9d864befb6005ac7f1
- https://git.kernel.org/stable/c/5c17cfe155d21954b4c7e2a78fa771cebcd86725
- https://git.kernel.org/stable/c/d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e
- https://git.kernel.org/stable/c/90642ee9eb581a13569b1c0bd57e85d962215273
- https://git.kernel.org/stable/c/0f000005da31f6947f843ce6b3e3a960540c6e00
- https://git.kernel.org/stable/c/41c44e1f3112d7265dae522c026399b2a42d19ef
- https://git.kernel.org/stable/c/2ad5692db72874f02b9ad551d26345437ea4f7f3
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-2021-33553
- GCVE · GCVE-0-2021-46905
CERT-FR advisories
- CERTFR-2024-AVI-0458 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0440 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0420 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0265 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2024-AVI-0242 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*< 4.19.189cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20.0 < 5.4.115cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5.0 < 5.10.33cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11.0 < 5.11.17cpe:2.3:o:linux:linux_kernel:5.12:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.12:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.12:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.12:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.12:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.12:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.12:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.12:rc7:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected a462067d7c8e6953a733bf5ade8db947b1bb5449 < 5871761c5f0f20d6e98bf3b6bd7486d857589554 ; affected 145c89c441d27696961752bf51b323f347601bee < 0c71d4c89559f72cec2592d078681a843bce570e ; affected caf5ac93b3b5d5fac032fc11fbea680e115421b4 < 24b699bea7553fc0b98dad9d864befb6005ac7f1 ; affected 92028d7a31e55d53e41cff679156b9432cffcb36 < 5c17cfe155d21954b4c7e2a78fa771cebcd86725 ; affected 4a2933c88399c0ebc738db39bbce3ae89786d723 < d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e ; affected dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac < 90642ee9eb581a13569b1c0bd57e85d962215273 |
| Linux · Linux | affected 5.12 ; unaffected 0 < 5.12 ; unaffected 4.19.189 ≤ 4.19.* ; unaffected 5.4.115 ≤ 5.4.* ; unaffected 5.10.33 ≤ 5.10.* ; unaffected 5.11.17 ≤ 5.11.* |
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 |