media: cx88: Fix a null-ptr-deref bug in buffer_prepare() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 12 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: media: cx88: Fix a null-ptr-deref bug in buffer_prepare() When the driver calls cx88_risc_buffer() to prepare the buffer, the function call may fail, resulting in a empty buffer and null-ptr-deref later in buffer_queue(). The following log can reveal it: [ 41.822762] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI [ 41.824488] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 41.828027] RIP: 0010:buffer_queue+0xc2/0x500 [ 41.836311] Call Trace: [ 41.836945] __enqueue_in_driver+0x141/0x360 [ 41.837262] vb2_start_streaming+0x62/0x4a0 [ 41.838216] vb2_core_streamon+0x1da/0x2c0 [ 41.838516] __vb2_init_fileio+0x981/0xbc0 [ 41.839141] __vb2_perform_fileio+0xbf9/0x1120 [ 41.840072] vb2_fop_read+0x20e/0x400 [ 41.840346] v4l2_read+0x215/0x290 [ 41.840603] vfs_read+0x162/0x4c0 Fix this by checking the return value of cx88_risc_buffer() [hverkuil: fix coding style issues]
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
- https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1
- https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21
- https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f
- https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9
- https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1
- https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b
- https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe
- https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb
- https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71
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 | CISA-ADP |
| 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) |
| 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 · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) |
European references
- ENISA EUVD · EUVD-2022-55639
- GCVE · GCVE-0-2022-50359
CERT-FR advisories
- 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:*:*:*:*:*:*:*:*< 4.9.331cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.10 < 4.14.296cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.15 < 4.19.262cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 4.20 < 5.4.220cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.5 < 5.10.150cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.11 < 5.15.75cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.16 < 5.19.17cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.0 < 6.0.3
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 10c99d1c46ea9cd940029e17bab11d021f315c21 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4befc7ffa18ef9a4b70d854465313a345a06862f ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9181af2dbf06e7f432e5dbe88d10b22343e851b9 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c2257c8a501537afab276c306cb717b7260276e1 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 6f21976095c1e92454ab030976f95f40d652351b |
| Linux · Linux | affected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 4.9.331 ≤ 4.9.* ; unaffected 4.14.296 ≤ 4.14.* ; unaffected 4.19.262 ≤ 4.19.* ; unaffected 5.4.220 ≤ 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 |