SB2026090545 - Memory leak in Linux kernel dma driver
Published: September 5, 2026
Security Bulletin ID
SB2026090545
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-2026-80902)
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 memory leak.
The vulnerability exists due to improper reclamation of active descriptors in the sun6i DMA driver's DMA termination handling when terminating DMA transfers. A local user can terminate DMA transfers to cause a memory leak.
Non-cyclic descriptors and their linked-list item chains are affected.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/004a7a02982bed0a727a4ac7be400f00f353e7a2
- https://git.kernel.org/stable/c/1ccc5c059d067c5358682ad5352e7d7e9239ed9b
- https://git.kernel.org/stable/c/27806fe7b9701af0963dcd510e30e7d0cc314c43
- https://git.kernel.org/stable/c/9086b488f2737d5dcee86852b83f2059f1cdfabf
- https://git.kernel.org/stable/c/ab1150115e68a46b687eb38c1ab92782018c9f2c
- https://git.kernel.org/stable/c/b150f603083cc8b72b0cbf13ec3e91f85b4390a0
- https://git.kernel.org/stable/c/bb87440561eb72b47a2b848b5373b86433b247e6
- https://git.kernel.org/stable/c/d4ba6aa65fcd797152d3aebd428a7b2da49cd5eb