5.5

CVE-2026-45897: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-45897DEBIAN-CVE-2026-45897CGA-24q6-wph2-mmc5
Published 27-05-2026Last modified 14-09-2026
Open JSON

Vulnerability summary

CVE-2026-45897 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 14
OPENSUSE-SU-2026:21910-1SUSE-SU-2026:23477-1SUSE-SU-2026:23481-1SUSE-SU-2026:23528-1SUSE-SU-2026:23529-1SUSE-SU-2026:23881-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 14-09-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_counter: serialize reset with spinlock Add a global static spinlock to serialize counter fetch+reset operations, preventing concurrent dump-and-reset from underrunning values. The lock is taken before fetching the total so that two parallel resets cannot both read the same counter values and then both subtract them. A global lock is used for simplicity since resets are infrequent. If this becomes a bottleneck, it can be replaced with a per-net lock later.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

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

Ubuntu132 products
  • linuxAll versions (No fix recorded) | < 6.8.0-147.147
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1067.70
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard40 products
  • hyperv-daemons-6.18All versions (No fix recorded)
  • linux-aws-6.12All versions (No fix recorded)
  • linux-aws-6.18< 6.18.42-r0
  • linux-aws-6.18-boot-installed< 6.18.42-r0
  • linux-aws-6.18-bootc< 6.18.55-r0 | All versions (No fix recorded) | < 6.18.42-r0
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.1.190-1 | < 6.12.101-1 | < 6.19.6-1
  • linux-6.12< 6.12.101-1~deb12u1
Linux2 products
  • linux≥ fb1adb05ea87b6149e65a31e511756c4f470d0cd, < e13194e60217db02c2e7202375d9e5951267d87b | ≥ f123293db16dcd0cd81b246ae60e6362f0025d0a, < de6601f1374fab124cd9276df6671f64d940ceb4 | ≥ 3cb03edb4de33fd04c4ea55f47397b96a8657c53, < 48cf7918d10c66cb6b05226fa3fa5daf0c891089 | ≥ 3cb03edb4de33fd04c4ea55f47397b96a8657c53, < cd968dcdec6aee79a2d399e4f6e0eca63c3b45e1 | ≥ 3cb03edb4de33fd04c4ea55f47397b96a8657c53, < 0cdc6d5a26f2d1f7f15a43526841b679445c32e2 | ≥ 3cb03edb4de33fd04c4ea55f47397b96a8657c53, < 779c60a5190c42689534172f4b49e927c9959e4e | ≥ 6.1.107, < 6.1.188 | ≥ 6.6.48, < 6.6.157 | 6.7
  • linux_kernel≥ 6.1.107, < 6.2 | ≥ 6.6.48, < 6.19.4

4 vendors · 176 products

References

12 links
Show all 12 references