SB2025120885 - NULL pointer dereference in Linux kernel dma ptdma driver
Published: December 8, 2025 Updated: December 12, 2025
Security Bulletin ID
SB2025120885
CSH 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 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2023-53755)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the pt_issue_pending() function in drivers/dma/ptdma/ptdma-dmaengine.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/5bba023b1241c7af5d40447503a68de282ad5190
- https://git.kernel.org/stable/c/8ae2113702613207efc05453bc9a3df2b992bf45
- https://git.kernel.org/stable/c/928469986171a6f763b34b039427f5667ba3fd50
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3