CVE-2026-97568: linux

CVSS: UnknownReceived
AliasesUBUNTU-CVE-2026-97568DEBIAN-CVE-2026-97568
Published 25-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-97568 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.6% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
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: syncookies: remember the request backup flag Instead of using an uninitialised bit when copying the info in subflow_ulp_clone(). To fix this, no need to extend the join_entry structure: backup is coming from struct mptcp_subflow_request_sock, only one bit. Do the same here by using one bit for both.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

26-09-202621-10-2026
EPSS score
0.21%

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≥ 1008f2bcbc8e461c1df3aebba30ac4f616ebe570, < c97fa2c7ada82d4cac1c6c00643238dc4c462f15 | ≥ 6f01f41b6a492ddf2da7609967cfaf57e7ca48a7, < 1668b34452009d27be3262646de748a3e48ffd51 | ≥ 09176f80995105c62939728fbad5c437d61e7ff4, < b138e7dc719f0a3949de8bb6500b8cf1604eea06 | ≥ 8ed3e34c766e8264d5d2e0436f86c51604d6a8a7, < 360d99258a6402cb8e49771460944f19f04d25b7 | ≥ efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < 61178d0b85b4b1b53e78b06e89d018d22d102f88 | ≥ efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < 00b2bd518911e0daab00f4749cce68c191ccebb4 | ≥ efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < 06d649f9cd03a9f8e768a658b20acf8d2c8022e0 | ≥ efd340bf3d7779a3a8ec954d8ec0fb8a10f24982, < b76c0e28b392620dfbaf92cdeedbf115820b44cb | 73e2baa301ee3f62ff971e68877adeb37f98cc67 | ≥ 5.10.224, < 5.10.271 | ≥ 5.15.165, < 5.15.222 | ≥ 6.1.104, < 6.1.189 | ≥ 6.6.45, < 6.6.158 | ≥ 6.10.4, < 6.11 | 6.11

3 vendors · 160 products

References

11 links
Show all 11 references