5.5

CVE-2026-46101: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-46101DEBIAN-CVE-2026-46101
Published 27-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-46101 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.1% 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
0.17%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 45 · Related 45
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22433-1SUSE-SU-2026:22436-1SUSE-SU-2026:22458-1SUSE-SU-2026:22460-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: reject zero shift in nft_bitwise Reject zero shift operands for nft_bitwise left and right shift expressions during initialization. The carry propagation logic computes the carry from the adjacent 32-bit word using BITS_PER_TYPE(u32) - shift. A zero shift operand turns this into a 32-bit shift, which is undefined behaviour. Reject zero shift operands in the control plane, alongside the existing check for values greater than or equal to 32, so malformed rules never reach the packet path.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.05 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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

Ubuntu147 products
  • linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < 9baa08d6b6b096fad70049533f0d705d85fdc979 | ≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < 4fccea585631621c975883911a08d15b6671f7dc | ≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < 9ad26c272405f53834871cc2e46b9b5393a666c3 | ≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < bffef0acec9c3b837a785248a893137fb7f26c95 | ≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < ca24f1243ad1a4d12d6a23876bbbe3ed02099853 | ≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < 6f820139d16a4c9865a145d4a9cf9c92cc632c14 | ≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < f370205974f171a5868c13ff30d7642fed46e47b | ≥ 567d746b55bc66d3800c9ae91d50f0c5deb2fd93, < fe11e5c40817b84abaa5d83bfb6586d8412bfd07 | 5.6
  • linux_kernel≥ 5.6, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.86 | ≥ 6.13, < 6.18.27 | ≥ 6.19, < 7.0.4 | 7.1:rc1
Debian1 product
  • linux< 6.1.176-1 | < 6.12.86-1 | < 7.0.4-1

3 vendors · 150 products

References

49 links
Show all 49 references