SB20260507170 - Improper resource shutdown or release in Linux kernel pci cx25821 driver
Published: May 7, 2026
Security Bulletin ID
SB20260507170
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) Improper resource shutdown or release (CVE-ID: CVE-2026-43183)
CWE-ID: CWE-404 - Improper Resource Shutdown or Release
CVSSv4: 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/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in cx25821_dev_setup() when handling a failed ioremap() operation after acquiring a memory region. A local user can trigger the vulnerable code path to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/071bfc6e723aabbbf08f0d439fb913cd01eb8de2
- https://git.kernel.org/stable/c/4010e596d23cda6de65acb14f7fd4ce8289f1d49
- https://git.kernel.org/stable/c/68cd8ac994cac38a305200f638b30e13c690753b
- https://git.kernel.org/stable/c/80ce3797dc99dae4ce8b939626b891c9eb85139f
- https://git.kernel.org/stable/c/9f1c926248bde95a77ca104ab525467470607836
- https://git.kernel.org/stable/c/b7210170b10e2d17f7a4f6b9d39cc092442db860
- https://git.kernel.org/stable/c/e220ec4c4596d634685b8a08d79ad876a720b466
- https://git.kernel.org/stable/c/f7759eb6738ee9fc296f6ab1705c6809947976f3