PT-2025-52996 · Linux · Linux Kernel
Published
2025-12-24
·
Updated
2026-02-24
·
CVE-2023-54039
None
No severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the Linux kernel related to an out-of-bounds memory access within the
j1939 tp tx dat new() function. Specifically, a flawed memcpy() operation could occur if the size of skb->cb exceeded the size of the struct j1939 sk buff cb structure, potentially leading to a read beyond the intended memory boundaries. The fix involves updating the memcpy() operation to utilize the size of struct j1939 sk buff cb instead of skb->cb, ensuring memory access remains within bounds. A BUILD BUG ON() check was added to verify that skb->cb is sufficiently large to accommodate struct j1939 sk buff cb.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Linux Kernel