PT-2026-30575 · Linux · Linux Kernel

Hyunwoo Kim · Published 2026-04-06 · Updated 2026-04-06 · CVE-2026-31407

Positive Technologies · (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw in its netfilter component related to conntrack and missing netlink policy validations. Specifically, the nlattr to sctp() function improperly handles user-supplied CTA PROTOINFO SCTP STATE values, potentially leading to an out-of-bounds access. This issue can occur when processing netlink attributes without proper validation, resulting in a slab-out-of-bounds read. The vulnerability affects the ctnetlink functionality.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-31407

Affected Products

Linux Kernel

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-31407 · Security Note
• https://git.kernel.org/stable/c/f900e1d77ee0ef87bfb5ab3fe60f0b3d8ad5ba05 · Note
• https://twitter.com/CVEnew/status/2041076956544864523 · Twitter Post
• https://twitter.com/infoflowcloud/status/2041077673523302861 · Twitter Post
• https://git.kernel.org/stable/c/0fbae1e74493d5a160a70c51aeba035d8266ea7d · Note