7.5

CVE-2026-97417: linux

CVSS: 7.5v3.1HighReceived
AliasesUBUNTU-CVE-2026-97417DEBIAN-CVE-2026-97417
Published 24-09-2026Last modified 03-10-2026
Open JSON

Vulnerability summary

CVE-2026-97417 is a high (CVSS 7.5) vulnerability in linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 40.8% 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
0.49%
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 3
RHSA-2026:75746RHSA-2026:75747RHSA-2026:76739

Timeline

  1. 24-09-2026
    PublishedVulnerability first disclosed.
  2. 03-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack() The timestamp-only fast path dereferences the option stream as *(__be32 *)ptr, which assumes 4-byte alignment that the TCP option stream does not guarantee. Use get_unaligned_be32() instead, which reads the value safely and already returns host byte order, so the htonl() on the comparison constant can be dropped. This matches the existing get_unaligned_be32() use later in the same function.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

25-09-202620-10-2026
EPSS score
0.49%

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

Ubuntu169 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 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9, < 740ad3d17a281f7764dda4dbeb37cea52e2e31ae | ≥ bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9, < a0523267de2523522b0f70972dd1ffa22ec6176c | ≥ bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9, < 55bcc3376cd7b18954cc9814da697504fdaf12bf | ≥ bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9, < 0d5ad732e4fdc569eb85861115e8f7b4c2c67852 | ≥ bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9, < 7ecfa46a536578a7ed335ddf31a854127268c27c | ≥ bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9, < 4abc1af7ac209c066f4e5dd75cdd56876e5829a9 | ≥ bb9fc37358ffa9de1cc2b2b6f1a559b926ef50d9, < d3bf9eae486490832bd08fd62ab0ac601f346bd4 | 3.1

3 vendors · 172 products

References

10 links