PT-2025-39130 · Linux+5 · Linux Kernel+5
Published
2025-08-22
·
Updated
2026-05-26
·
CVE-2025-39873
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the xilinx can module, specifically in the
xcan write frame() function, leading to a use-after-free condition involving transmitted SKB (Socket Buffer) data. The can put echo skb() function acquires ownership of the SKB and may free it during or after its call. However, the xcan write frame() function continues to access the SKB after this point. The fix involves ensuring that can put echo skb() is called only after all operations on the SKB are completed. A previous attempt to address this issue did not fully resolve the problem.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu
Xilinx Can