What is CVE-2026-23457?

CVE-2026-23457 is a high-severity vulnerability in Linux. CVSS score: 8.6/10. Published 2026-04-03.

How severe is CVE-2026-23457?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Linux

CVE-2026-23457

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_sip: fix Content-Length u32 truncation in sip_help_tcp() sip_help_tcp() parses the SIP Content-Length header with simple_strtoul(), which returns…

EPSS: 0.001 (28.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

Affected products

Linux — versions f5b321bd37fbec9188feb1f721ab46a5ac0b35da, 2.6.34, 0
Linux Linux_kernel — versions 7.0

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

Frequently asked questions

What is CVE-2026-23457?: CVE-2026-23457 is a high-severity vulnerability in Linux. CVSS score: 8.6/10. Published 2026-04-03.
How severe is CVE-2026-23457?: High severity. CVSS v3 base score is 8.6 out of 10.