CVE-2022-50359 Details
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]
A null pointer dereference vulnerability has been identified in the Linux kernel's cx88 video driver. This issue arises in the 'buffer_prepare' function, where the driver calls 'cx88_risc_buffer' to prepare a buffer. If this function fails, it can lead to an empty buffer and a subsequent null pointer dereference in 'buffer_queue', causing a general protection fault. The vulnerability has been observed in several versions of the Linux kernel.
The vulnerability has been fixed in the Linux kernel. Users should upgrade to the latest version of the stable Linux kernel to address this issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jan 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/10c99d1c46ea9cd940029e17bab11d021f315c21 | kernel.org | Patch |
| https://git.kernel.org/stable/c/2b064d91440b33fba5b452f2d1b31f13ae911d71 | kernel.org | Patch |
| https://git.kernel.org/stable/c/4befc7ffa18ef9a4b70d854465313a345a06862f | kernel.org | Patch |
| https://git.kernel.org/stable/c/644d5a87ab1863eb606526ea743021752a17e9cb | kernel.org | Patch |
| https://git.kernel.org/stable/c/6f21976095c1e92454ab030976f95f40d652351b | kernel.org | Patch |
| https://git.kernel.org/stable/c/704838040f3bdb4aa07ff4f26505a666a3defcfe | kernel.org | Patch |
| https://git.kernel.org/stable/c/9181af2dbf06e7f432e5dbe88d10b22343e851b9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c2257c8a501537afab276c306cb717b7260276e1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/c76d04d2079a4b7369ce9a0e859c0f3f2250bcc1 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-476 | NULL Pointer Dereference | [email protected] |
| CWE-476 | NULL Pointer Dereference | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | < 4.9.331 >= 4.10, < 4.14.296 >= 4.15, < 4.19.262 >= 4.20, < 5.4.220 >= 5.5, < 5.10.150 >= 5.11, < 5.15.75 >= 5.16, < 5.19.17 >= 6.0, < 6.0.3 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jan 14, 2026 | CVE Modified | CISA-ADP |
| Dec 9, 2025 | Initial Analysis | [email protected] |
| Sep 17, 2025 | New CVE Received | kernel.org |