7.5

CVE-2026-97524: linux

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-97524DEBIAN-CVE-2026-97524
Published 25-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-97524 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.69% chance of exploitation in the next 30 days, higher than 52% 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
0.69%
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: avoid unneeded actions on subflow reset Once in a blue moon, the mptcp receive path can recursively call mptcp_data_ready() via state change under unlucky error conditions, and then try to hold the data lock again. Break the recursion loop explicitly checking for the exceptional condition. Add a new flag instead of using an existing one like 'closing', to exit early in subflow_state_change(), and explicitly flush the RX queue at reset time. This avoids unneeded processing to check for available data -- calling get_mapping_status() and more on a dying subflow -- but also in error reporting and worker scheduling. Note that we must consume the currently peeked skb before invoking mptcp_dss_corruption to avoid consuming it again after the eventual reset has freed it.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.69%

Chance of exploitation in the next 30 days

Percentile

52%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

26-09-202621-10-2026
EPSS score
0.69%

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≥ fde99e972b8f88cebe619241d7aa43d288ef666a, < 6d669c740933124eae3df8cfc15995af9bcc6aba | ≥ 12c1676d598e3b8dd92a033b623b792cc2ea1ec5, < 83a7dcdd2b1060484528da70a643125174d47e5a | ≥ 35668f8ec84f6c944676e48ecc6bbc5fc8e6fe25, < a370e56024df0b07e3120c45a9773ae123819fd6 | ≥ b8be15d1ae7ea4eedd547c3b3141f592fbddcd30, < 1962841387087970d75ba8b8d4c2aa2d45705e50 | ≥ e32d262c89e2b22cb0640223f953b548617ed8a6, < 4b7abdcb5ba832fafab679f0d998af39cbc99307 | ≥ e32d262c89e2b22cb0640223f953b548617ed8a6, < b2dbcc1ed48b5ac070a41db4a52aade6823c4df0 | ≥ e32d262c89e2b22cb0640223f953b548617ed8a6, < ce7e4ede01ed3e47a48c0f1ce1d87bf4864bee9f | ≥ e32d262c89e2b22cb0640223f953b548617ed8a6, < 2b0f561f21b27c40c91ea4975268a06092bd7e9c | 8bfd391bde685df7289b928ce8876a3583be4bfb | ≥ 5.10.228, < 5.10.271 | ≥ 5.15.169, < 5.15.222 | ≥ 6.1.113, < 6.1.189 | ≥ 6.6.57, < 6.6.158 | ≥ 6.11.4, < 6.12 | 6.12

3 vendors · 160 products

References

11 links
Show all 11 references