5.5

CVE-2026-43140: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-43140DEBIAN-CVE-2026-43140
Published 06-05-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-43140 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5% 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 · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 38 · Related 38
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1SUSE-SU-2026:23221-1

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: Do not crash on missing msc->input Fake USB devices can send their own report descriptors for which the input_mapping() hook does not get called. In this case, msc->input stays NULL, leading to a crash at a later time. Detect this condition in the input_configured() hook and reject the device. This is not supposed to happen with actual magic mouse devices, but can be provoked by imposing as a magic mouse USB device.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.03 pp

From 0.13% 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

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-134.134
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2 | ≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 165912d4321c692321c02793068d30700b4e0f1a | ≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < f6a3860241fbb556fd72332fa31c5e787004413b | ≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 243e1165eb03aca97d87aafa9c3130593837a1c2 | ≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 922bd3e498a4b8e445def6e6ffea2ad3682ad516 | ≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 5bbe266272d86c0657e8253600f3d5b74fb7b2ae | ≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 36c83c1329dd881f290f7df2feadfb9a21775108 | ≥ 64eb105d7f92fa48798106ac0d8bf17668eb2524, < 17abd396548035fbd6179ee1a431bd75d49676a7 | 2.6.37
  • linux_kernel≥ 2.6.37, < 5.10.252 | ≥ 5.11, < 5.15.202 | ≥ 5.16, < 6.1.165 | ≥ 6.2, < 6.6.128 | ≥ 6.7, < 6.12.75 | ≥ 6.13, < 6.18.16 | ≥ 6.19, < 6.19.6
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.6-1

3 vendors · 160 products

References

37 links
Show all 37 references