7.5

CVE-2026-97523: linux

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-97523DEBIAN-CVE-2026-97523
Published 25-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-97523 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 51.3% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.67%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2026:12074-1

Timeline

  1. 25-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: mptcp: close race between scheduler and state change The mptcp scheduler may race with subflow sockets state change: data transmission on the selected socket may fail and a later release could try to use mss_now reset to 0 for a divide operation. Address the issue by explicitly checking for the critical scenario.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.67%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

26-09-202622-10-2026
EPSS score
0.67%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.111-1 | < 7.2.7-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ fb9c73ef2ac2ec816efdc8b9267bc04e1369c20b, < d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03 | ≥ c886d70286bf3ad411eb3d689328a67f7102c6ae, < 5883ae880f51edc4b1484e787473b865b6159ead | ≥ c886d70286bf3ad411eb3d689328a67f7102c6ae, < 0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0 | ≥ c886d70286bf3ad411eb3d689328a67f7102c6ae, < 8f11430d51ff8365bc51b670bc3002b65ae4c6b7 | ≥ c886d70286bf3ad411eb3d689328a67f7102c6ae, < a09c87abf10a0a7e203137c75b5381aa63d9b31d | ≥ c886d70286bf3ad411eb3d689328a67f7102c6ae, < 4c856f3c151a2f3fa237caa651c44015916ca584 | ≥ c886d70286bf3ad411eb3d689328a67f7102c6ae, < 42064de57fb83231fcc89663a94885f228a1ee53 | 8caf5c15b5288d52d9c89374d6c10fa32ee84ec5 | ≥ 5.15.190, < 5.15.222 | ≥ 5.19.4, < 5.20 | 6.0

3 vendors · 160 products

References

10 links