5.5

CVE-2026-43119: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-43119DEBIAN-CVE-2026-43119CGA-6g3q-x4xh-5rwm
Published 06-05-2026Last modified 24-07-2026
Open JSON

Vulnerability summary

CVE-2026-43119 is a medium (CVSS 5.5) 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 · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 25 · Related 26
OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22433-1SUSE-SU-2026:22436-1SUSE-SU-2026:22458-1SUSE-SU-2026:22460-1SUSE-SU-2026:22742-1

Timeline

  1. 06-05-2026
    PublishedVulnerability first disclosed.
  2. 24-07-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: annotate data-races around hdev->req_status __hci_cmd_sync_sk() sets hdev->req_status under hdev->req_lock: hdev->req_status = HCI_REQ_PEND; However, several other functions read or write hdev->req_status without holding any lock: - hci_send_cmd_sync() reads req_status in hci_cmd_work (workqueue) - hci_cmd_sync_complete() reads/writes from HCI event completion - hci_cmd_sync_cancel() / hci_cmd_sync_cancel_sync() read/write - hci_abort_conn() reads in connection abort path Since __hci_cmd_sync_sk() runs on hdev->req_workqueue while hci_send_cmd_sync() runs on hdev->workqueue, these are different workqueues that can execute concurrently on different CPUs. The plain C accesses constitute a data race. Add READ_ONCE()/WRITE_ONCE() annotations on all concurrent accesses to hdev->req_status to prevent potential compiler optimizations that could affect correctness (e.g., load fusing in the wait_event condition or store reordering).

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.05 pp

From 0.11% on 21-09-2026

21-09-202621-10-2026
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

No weakness data has been published for this record.

Affected systems

Ubuntu157 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)
Chainguard6 products
  • linux-aws-6.18< 6.18.24-r1
  • linux-azure-6.18< 6.18.31-r0
  • linux-gcp-6.18< 6.18.31-r0
  • linux-qemu-6.18< 6.18.31-r0
  • linux-qemu-6.18-bootc-boot-installed< 6.18.31-r0
Linux2 products
  • linux≥ f80c5dad7b6467b884c445ffea45985793b4b2d0, < e51042ddc0b20d9bda5eb6dcf85a2668f9c5dae4 | ≥ f80c5dad7b6467b884c445ffea45985793b4b2d0, < 6e539907c0d11f514c5e0b049b27b04dff48a5b1 | ≥ f80c5dad7b6467b884c445ffea45985793b4b2d0, < a7a1cdb4a64ca74eb95cc46648fccb8cd3f9af27 | ≥ f80c5dad7b6467b884c445ffea45985793b4b2d0, < 40734ce8efc34c4a0d0222855798c0dc14b65f2e | ≥ f80c5dad7b6467b884c445ffea45985793b4b2d0, < b6807cfc195ef99e1ac37b2e1e60df40295daa8c | 8603d49906b231bbcd9141db7d096fa1041bc379 | 0e061885bfcd65ef5d09f154f3c3c3491cc7544a | a3d50fb7ce931f08a2c6194fdc4c9a56c9ed4153 | ≥ 4.19.47, < 4.20 | ≥ 5.0.20, < 5.1 | ≥ 5.1.6, < 5.2 | 5.2
  • linux_kernel≥ 5.2, < 6.12.83 | ≥ 6.13, < 6.18.24 | ≥ 6.19, < 6.19.14 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5
Debian1 product
  • linuxAll versions (No fix recorded) | < 6.12.85-1 | < 6.19.14-1

4 vendors · 166 products

References

23 links
Show all 23 references