5.5

CVE-2026-23256: linux Off-by-one Error

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-23256DEBIAN-CVE-2026-23256
Published 18-03-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-23256 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 VF 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. 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

Ubuntu156 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≥ 846b46873eeb3baf40f7e6d8fe8f98aec95e7727, < bd680e56e316be92c01568be98d85d7a6c9bd92c | ≥ 846b46873eeb3baf40f7e6d8fe8f98aec95e7727, < 01fbca1e93ec3f39f76c31a8f9afa32ce00da48a | ≥ 846b46873eeb3baf40f7e6d8fe8f98aec95e7727, < 71a56b89203ec7e5670d94a61a9b4ae617eca804 | ≥ 846b46873eeb3baf40f7e6d8fe8f98aec95e7727, < 3bf519e39b51cb08a93c0599870b35a23db1031e | ≥ 846b46873eeb3baf40f7e6d8fe8f98aec95e7727, < 52b19b3a22306fe452ec9e8ff96063f4bfb77b99 | ≥ 846b46873eeb3baf40f7e6d8fe8f98aec95e7727, < 4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfd | ≥ 846b46873eeb3baf40f7e6d8fe8f98aec95e7727, < 6cbba46934aefdfb5d171e0a95aec06c24f7ca30 | 4.10
  • linux_kernel≥ 4.10, < 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 · 159 products

References

26 links
Show all 26 references