7.8

CVE-2026-43049: linux Use After Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2026-43049DEBIAN-CVE-2026-43049
Published 01-05-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-43049 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · 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 27 · Related 26
LSN-0122-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:22433-1SUSE-SU-2026:22436-1SUSE-SU-2026:22458-1SUSE-SU-2026:22460-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: HID: logitech-hidpp: Prevent use-after-free on force feedback initialisation failure Presently, if the force feedback initialisation fails when probing the Logitech G920 Driving Force Racing Wheel for Xbox One, an error number will be returned and propagated before the userspace infrastructure (sysfs and /dev/input) has been torn down. If userspace ignores the errors and continues to use its references to these dangling entities, a UAF will promptly follow. We have 2 options; continue to return the error, but ensure that all of the infrastructure is torn down accordingly or continue to treat this condition as a warning by emitting the message but returning success. It is thought that the original author's intention was to emit the warning but keep the device functional, less the force feedback feature, so let's go with that.

CVSS metrics

4 scores · 3 sources · 2 versions

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 0.12% 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

Affected systems

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ abdd3d0b344fdf72a4904d09b97bc964d74c4419, < df966f0def87550bd81d0892cdff992202de2712 | ≥ abdd3d0b344fdf72a4904d09b97bc964d74c4419, < 772f99cc8d6e5d95613bce93c9624e154c1abe88 | ≥ abdd3d0b344fdf72a4904d09b97bc964d74c4419, < b846fb0a73e99174f08238e083e284c0463a2102 | ≥ abdd3d0b344fdf72a4904d09b97bc964d74c4419, < 9a793ac19eb84f44ed759c0fce80cf29bc2a2453 | ≥ abdd3d0b344fdf72a4904d09b97bc964d74c4419, < f7a4c78bfeb320299c1b641500fe7761eadbd101 | 5f7fd3576cf30d502a8b2aec4e7a49c4f894e253 | ≥ 5.3.9, < 5.4 | 5.4
  • linux_kernelEOL≥ 5.4.1, < 6.12.81 | ≥ 6.13, < 6.18.22 | ≥ 6.19, < 6.19.12 | 5.3.9 | 5.4 | 5.4:rc6 | 5.4:rc7 | 5.4:rc8 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.85-1 | < 6.19.12-1

3 vendors · 156 products

References

23 links
Show all 23 references