SB20260727252 - Memory leak in Linux kernel usb common driver
Published: July 27, 2026
Security Bulletin ID
SB20260727252
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-64332)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper memory management in the ULPI device registration logic in drivers/usb/common/ulpi.c when handling early ULPI device registration failures. A local user can trigger a registration failure to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1967a7f0cd5c08eb479196daa5aaa4b7b7a7bd04
- https://git.kernel.org/stable/c/5c098f20f15db7f9126129686d1c6da2ce8bbeb0
- https://git.kernel.org/stable/c/624c57147df1977e0d3da53f1da7117861b9cf19
- https://git.kernel.org/stable/c/691e61e5d4cfc5a1b061e937f8cbf2126bfc19a0
- https://git.kernel.org/stable/c/88187a43135c79d0e43573b4d8f880bbb919eceb
- https://git.kernel.org/stable/c/8af6812795869a66e9b26044f455b13deecdb69c
- https://git.kernel.org/stable/c/d5b32f36c50894ac2df8fa184e6f35f3a6665ecd
- https://git.kernel.org/stable/c/e5493c9a98ffe083acf13ac064828ae598ba3c16