7.8

CVE-2026-93288: linux

CVSS: 7.8v3.1HighReceived
AliasesUBUNTU-CVE-2026-93288DEBIAN-CVE-2026-93288
Published 24-09-2026Last modified 03-10-2026
Open JSON

Vulnerability summary

CVE-2026-93288 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% 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
0.13%
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-2026:76739RHSA-2026:85773RHSA-2026:85774

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: nfnetlink_log: wait for rcu grace period before freeing pernet state sashiko reports: "nfnl_log_net_exit() calls nf_log_unset(), which clears the logger pointer without an RCU grace period. Immediately after, ops_free_list() frees the per-net state while concurrent packets might still be executing nf_log_packet() under rcu_read_lock()." Clear the pointer via .pre_exit to make sure rcu readers have completed before pernet storage is free'd. The change in nf_log_syslog.c is only done for consistency: it doesn't use pernet data.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

25-09-202620-10-2026
EPSS score
0.13%

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≥ c83fa19603bdaeef17b815713dbbe3230c8a34ee, < ba2e246aa294f9acd86194ea87fb6834ed0a37ac | ≥ c83fa19603bdaeef17b815713dbbe3230c8a34ee, < 5570d6c8b320dbcc602617ee08c27ce752fed65a | ≥ c83fa19603bdaeef17b815713dbbe3230c8a34ee, < 3b9aa62d78ce80de47af2db472ff452398755213 | ≥ c83fa19603bdaeef17b815713dbbe3230c8a34ee, < f4461654374576e9d5d0245fd534c46ad8509051 | ≥ c83fa19603bdaeef17b815713dbbe3230c8a34ee, < dc20050b6b12ca58066715d088e1a537535d938d | ≥ c83fa19603bdaeef17b815713dbbe3230c8a34ee, < 33d1469b0124cc0baaea7a2032123b77a81e0940 | 4.12

3 vendors · 172 products

References

9 links