PT-2026-36428 · Linux+1 · Linux Kernel+1

CVE-2026-43011

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Published

2026-05-01

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Updated

2026-07-24

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/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 A double free issue exists in the net/x25 component. When alloc skb fails within the x25 queue rx frame() function, the system calls kfree skb(skb) and returns an error. This error propagates through x25 state3 machine() and x25 process rx frame(), eventually leading x25 backlog rcv() to call kfree skb(skb) a second time on the same socket buffer (skb).
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Double Free

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Weakness Enumeration

CWE-415

Related Identifiers

CVE-2026-43011
ECHO-53A0-0203-A528
SUSE-SU-2026:3130-1
SUSE-SU-2026:3166-1
USN-8490-1
USN-8490-2
USN-8491-1
USN-8492-1
USN-8492-2
USN-8492-3
USN-8492-4
USN-8492-5
USN-8493-1
USN-8493-2
USN-8497-1
USN-8498-1
USN-8499-1
USN-8501-1
USN-8508-1
USN-8527-1
USN-8528-1
USN-8529-1
USN-8530-1
USN-8545-1
USN-8546-1
USN-8547-1
USN-8548-1
USN-8604-1
USN-8605-1
USN-8606-1
USN-8607-1
USN-8609-1

Affected Products

Linuxmint
Linux Kernel