7.8

CVE-2026-98251: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-98251DEBIAN-CVE-2026-98251
Published 06-10-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-98251 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 2.9% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.14%
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-2026:12131-1

Timeline

  1. 06-10-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: openvswitch: avoid reallocating confirmed conntrack labels ovs_ct_get_conn_labels() adds the labels extension when a conntrack entry does not have one. Confirmed conntracks can be read locklessly, so adding an extension may reallocate and free the extension block while another CPU accesses it. Only add the extension for unconfirmed conntracks. A confirmed conntrack without labels now fails the caller's label operation instead of reallocating its extension storage.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

06-10-202621-10-2026
EPSS score
0.14%

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)
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.113-1 | < 7.2.8-1
Linux1 product
  • linux≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < 4371d79ea74407fb992c985b1f94391e35bb8289 | ≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < 7ff688aceada1160331a789385ea146f62fbddf7 | ≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < 05eab8dced6bf4d3009a6eeee16ddac99047dc83 | ≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < 579d87ec1e1e85729a6cb2c25961e58beb78640c | ≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < 2e6dd889c325abf23821e1459c3ffef59b7f0009 | ≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < d16f089bd700f45d720ce989d5495e1dc3be0cf8 | ≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < 8c9fcc6c33950d3db551af664d1fd3d998bfee56 | ≥ c2ac667358708d7cce64c78f58af6adf4c1e848b, < 3f118c8217c109fd13ca61caa301d72c483897ef | 4.3

3 vendors · 171 products

References

12 links
Show all 12 references