5.5

CVE-2026-43022: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-43022DEBIAN-CVE-2026-43022CGA-2m84-4p4m-74wc
Published 01-05-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-43022 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.7% 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 13
OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1SUSE-SU-2026:22666-1SUSE-SU-2026:22742-1

Timeline

  1. 01-05-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hci_cmd_sync_queue_once() return -EEXIST if exists hci_cmd_sync_queue_once() needs to indicate whether a queue item was added, so caller can know if callbacks are called, so it can avoid leaking resources. Change the function to return -EEXIST if queue item already exists. Modify all callsites to handle that.

CVSS metrics

4 scores · 3 sources · 2 versions

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 20-09-2026

20-09-202620-10-2026
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

No weakness data has been published for this record.

Affected systems

Ubuntu159 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard32 products
  • linux-aws-6.12< 6.12.85-r2
  • linux-aws-6.18All versions (No fix recorded)
  • linux-aws-6.18-boot-installedAll versions (No fix recorded)
  • linux-aws-6.18-bootcAll versions (No fix recorded)
  • linux-aws-6.18-bootc-boot-installedAll versions (No fix recorded)
Linux2 products
  • linux≥ 505ea2b295929e7be2b4e1bc86ee31cb7862fb01, < 5cfa4f537a056c91ac6c09bc3ab58a4455217df7 | ≥ 505ea2b295929e7be2b4e1bc86ee31cb7862fb01, < 0ad2ce230b38cd4b3f6732cc609e270461e626e5 | ≥ 505ea2b295929e7be2b4e1bc86ee31cb7862fb01, < 2969554bcfccb5c609f6b6cd4a014933f3a66dd0 | f00f36db76eb8fd10d13e80e2590f23b5beaa54d | 1499f79995c7ee58e3bfeeff75f6d1b37dcda881 | 357603f4d396d85fbf0045512efaf1d7f7394ed7 | ≥ 6.1.120, < 6.2 | ≥ 6.6.51, < 6.7 | ≥ 6.8.9, < 6.9 | 6.9
  • linux_kernelEOL≥ 6.9, < 6.19.12 | 6.1.120 | 6.6.51 | 6.8.9 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.19.12-1

4 vendors · 194 products

References

8 links