What is CVE-2026-23449?

CVE-2026-23449 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2026-04-03.

How severe is CVE-2026-23449?

High severity. CVSS v3 base score is 7.8 out of 10.

Double Free in Linux

CVE-2026-23449

In the Linux kernel, the following vulnerability has been resolved: net/sched: teql: Fix double-free in teql_master_xmit Whenever a TEQL devices has a lockless Qdisc as root, qdisc_reset should be called using the seq_lock to avoid racin…

Vulnerability class: Double Free

EPSS: 0.000 (3.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linux — versions 96009c7d500efdd5534e83b2e3eb2c58d4b137ae, 4.18, 0
Linux Linux_kernel — versions 7.0

Weakness classification (CWE)

CWE-415 — Double Free

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-23449?: CVE-2026-23449 is a high-severity vulnerability in Linux, classified under Double Free. CVSS score: 7.8/10. Published 2026-04-03.
How severe is CVE-2026-23449?: High severity. CVSS v3 base score is 7.8 out of 10.