Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. These attributes are used by the kernel without any validation. Extend the netlink policies accordingly. Quoting the reporter: nlattr_to_sctp() assigns the user-supplied CTA_PROTOINFO_SCTP_STATE value directly to ct->proto.sctp.state without checking that it is within the valid range. [..] and: ... with exp->dir = 100, the access at ct->master->tuplehash[100] reads 5600 bytes past the start of a 320-byte nf_conn object, causing a slab-out-of-bounds read confirmed by UBSAN.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.27, < 6.6.136 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/0fbae1e74493d5a160a70c51aeba035d8266ea7dPatch
- https://git.kernel.org/stable/c/67c53c1978cef3c504237275e39c857e2f6af56ePatch
- https://git.kernel.org/stable/c/9174d28f3f15d8c4962f5980c0be167633880443Patch
- https://git.kernel.org/stable/c/c5e918390002edf0cff80a0e7ce1f86f16a9507cPatch
- https://git.kernel.org/stable/c/f900e1d77ee0ef87bfb5ab3fe60f0b3d8ad5ba05Patch
FAQ
What is CVE-2026-31407?
CVE-2026-31407 is a vulnerability with a CVSS score of 7.1 (HIGH). In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: add missing netlink policy validations Hyunwoo Kim reports out-of-bounds access in sctp and ctnetlink. Thes...
How severe is CVE-2026-31407?
CVE-2026-31407 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31407?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.