chardev: fix error handling in cdev_device_add() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.18 % · percentile 8 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
Description
In the Linux kernel, the following vulnerability has been resolved: chardev: fix error handling in cdev_device_add() While doing fault injection test, I got the following report: ------------[ cut here ]------------ kobject: '(null)' (0000000039956980): is not initialized, yet kobject_put() is being called. WARNING: CPU: 3 PID: 6306 at kobject_put+0x23d/0x4e0 CPU: 3 PID: 6306 Comm: 283 Tainted: G W 6.1.0-rc2-00005-g307c1086d7c9 #1253 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:kobject_put+0x23d/0x4e0 Call Trace: <TASK> cdev_device_add+0x15e/0x1b0 __iio_device_register+0x13b4/0x1af0 [industrialio] __devm_iio_device_register+0x22/0x90 [industrialio] max517_probe+0x3d8/0x6b4 [max517] i2c_device_probe+0xa81/0xc00 When device_add() is injected fault and returns error, if dev->devt is not set, cdev_add() is not called, cdev_del() is not needed. Fix this by checking dev->devt in error path.
Weaknesses (CWE)
- CWE-908 — Use of Uninitialized Resource
References
- https://git.kernel.org/stable/c/5d2146889fad4cb9e6c13e790d4cfd871486eca8
- https://git.kernel.org/stable/c/6acf8597c5b04f455ee0649e11e5f3bcd28f381e
- https://git.kernel.org/stable/c/34d17b39bceef25e4cf9805cd59250ae05d0a139
- https://git.kernel.org/stable/c/d85b5247a79355b8432bfd9ac871f96117f750d4
- https://git.kernel.org/stable/c/c46db6088bccff5115674d583fef46ede80077a2
- https://git.kernel.org/stable/c/28dc61cc49c6e995121c6d86bef4b73df78dda80
- https://git.kernel.org/stable/c/b5de1eac71fec1af7723f1083d23a24789fd795c
- https://git.kernel.org/stable/c/85a5660491b507d33662b8e81c142e6041e642eb
- https://git.kernel.org/stable/c/11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797
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-2022-55573
- GCVE · GCVE-0-2022-50282
CERT-FR advisories
- CERTFR-2026-AVI-0128 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0921 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2025-AVI-0895 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 3.16.83 < 3.17cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.4.224 < 4.5cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.9.224 < 4.9.337cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.12 < 4.14.303cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.270cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.229cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.163cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.86cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 6.0.16cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.1 < 6.1.2
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected da97a80a657d1b1b50ef633e8ff5dbf0d417fc8d < 5d2146889fad4cb9e6c13e790d4cfd871486eca8 ; affected 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 < 6acf8597c5b04f455ee0649e11e5f3bcd28f381e ; affected 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 < 34d17b39bceef25e4cf9805cd59250ae05d0a139 ; affected 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 < d85b5247a79355b8432bfd9ac871f96117f750d4 ; affected 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 < c46db6088bccff5115674d583fef46ede80077a2 ; affected 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 < 28dc61cc49c6e995121c6d86bef4b73df78dda80 |
| Linux · Linux | affected 4.12 ; unaffected 0 < 4.12 ; unaffected 4.9.337 ≤ 4.9.* ; unaffected 4.14.303 ≤ 4.14.* ; unaffected 4.19.270 ≤ 4.19.* ; unaffected 5.4.229 ≤ 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 |