5.5

CVE-2026-23257: linux Off-by-one Error

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-23257DEBIAN-CVE-2026-23257
Published 18-03-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-23257 is a medium (CVSS 5.5) Off-by-one Error vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.6% 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
0.12%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 15
MGASA-2026-0097MGASA-2026-0098USN-8278-1USN-8278-2USN-8289-1USN-8289-2

Timeline

  1. 18-03-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Fix off-by-one error in PF setup_nic_devices() cleanup In setup_nic_devices(), the initialization loop jumps to the label setup_nic_dev_free on failure. The current cleanup loop while(i--) skip the failing index i, causing a memory leak. Fix this by changing the loop to iterate from the current index i down to 0. Also, decrement i in the devlink_alloc failure path to point to the last successfully allocated index. Compile tested only. Issue found using code review.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

+0.01 pp

From 0.11% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.12%

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

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-185.195 | < 6.8.0-117.117
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1111.118 | < 6.8.0-1055.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ f21fb3ed364bb83533c5efe19354e337ea9ecda9, < af38d9a5cb49fe9d0d282b44f17fdc1f3270d99d | ≥ f21fb3ed364bb83533c5efe19354e337ea9ecda9, < d86c58eb005eb99da402452f3db7a6e0eae32815 | ≥ f21fb3ed364bb83533c5efe19354e337ea9ecda9, < f1216b80c9040a904d2ad7c8cd24ca0ff1f36932 | ≥ f21fb3ed364bb83533c5efe19354e337ea9ecda9, < a0d2389c8cdc1f05de5eb8663bffe9ed05dca769 | ≥ f21fb3ed364bb83533c5efe19354e337ea9ecda9, < f86bd16280a0f88b538394e0565c56ce4756da99 | ≥ f21fb3ed364bb83533c5efe19354e337ea9ecda9, < 293eaad0d6d6b2a37a458c7deb7be345349cd963 | ≥ f21fb3ed364bb83533c5efe19354e337ea9ecda9, < 8558aef4e8a1a83049ab906d21d391093cfa7e7f | 4.2
  • linux_kernel≥ 4.2, < 5.10.250 | ≥ 5.11, < 5.15.200 | ≥ 5.16, < 6.1.163 | ≥ 6.2, < 6.6.124 | ≥ 6.7, < 6.12.70 | ≥ 6.13, < 6.18.10 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.164-1 | < 6.12.73-1 | < 6.18.10-1

3 vendors · 160 products

References

26 links
Show all 26 references