SB20250916183 - NULL pointer dereference in Linux kernel usb dvb-usb driver
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916183
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-50272)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the az6027_i2c_xfer() function in drivers/media/usb/dvb-usb/az6027.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0ed554fd769a19ea8464bb83e9ac201002ef74ad
- https://git.kernel.org/stable/c/210fcf64be4db82c0e190e74b5111e4eef661a7a
- https://git.kernel.org/stable/c/2b6a8a1a32746981044e7ab06649c804acb4068a
- https://git.kernel.org/stable/c/559891d430e3f3a178040c4371ed419edbfa7d65
- https://git.kernel.org/stable/c/6b60cf73a931af34b7a0a3f467a79d9fe0df2d70
- https://git.kernel.org/stable/c/6fbc44731a4665cbe92a5090e9804a388a72214b
- https://git.kernel.org/stable/c/7abfe467cd685f5da7ecb415441e45e3e4e2baa8
- https://git.kernel.org/stable/c/8b256d23361c51aa4b7fdb71176c1ca50966fb39
- https://git.kernel.org/stable/c/c712d1ccbfb787620422b437a5b8fac0802547bd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.303