PT-2026-37584 · Linux+1 · Linux Kernel+1
CVE-2026-43244
·
Published
2026-05-06
·
Updated
2026-07-28
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An issue exists in the Kernel Connection Multiplexor (KCM) where a zero-fragment socket buffer (skb) can remain in the
frag list during a partial sendmsg error. When kcm sendmsg() fills the maximum number of fragments, it allocates a new skb and links it to the frag list before copying data. If the copy operation fails, the new skb remains in the list without any fragments. For SOCK SEQPACKET, this can lead to a warning in the kcm write msgs() function when it processes the frag list and encounters an empty skb. This occurs because KCM lacked a cleanup mechanism similar to the one used in TCP to remove empty skbs on failure.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Memory Leak
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel