CVE-2022-50359
media: cx88: Fix a null-ptr-deref bug in buffer_prepare()
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]
INFO
Published Date :
Sept. 17, 2025, 3:15 p.m.
Last Modified :
Jan. 14, 2026, 7:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Check the return value of cx88_risc_buffer().
- Ensure buffers are handled correctly after potential failure.
- Apply the provided kernel patch.
- Update the Linux kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-50359.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50359 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50359
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-50359 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50359 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jan. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 -
Initial Analysis by [email protected]
Dec. 09, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.0.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.10 up to (excluding) 4.14.296 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 4.19.262 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.220 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.150 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.75 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.19.17 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.9.331 Added Reference Type kernel.org: https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 17, 2025
Action Type Old Value New Value Added 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] Added Reference https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21 Added Reference https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71 Added Reference https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f Added Reference https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb Added Reference https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b Added Reference https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe Added Reference https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9 Added Reference https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1 Added Reference https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1