Vulnerability-Lookup

FKIE_CVE-2026-43018

Vulnerability from fkie_nvd - Published: 2026-05-01 15:16 - Updated: 2026-05-08 14:15

Severity

8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt hci_conn lookup and field access must be covered by hdev lock in hci_le_remote_conn_param_req_evt, otherwise it's possible it is freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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    }
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          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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}

CVE-2026-43018 (GCVE-0-2026-43018)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-11 22:16

Title

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt

Summary

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/59eecf0ffde15670e…
https://git.kernel.org/stable/c/5fb69e1eeea9d6cba…
https://git.kernel.org/stable/c/7cadb03be37e76113…
https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0…
https://git.kernel.org/stable/c/ea3cd36d7382d5f83…
https://git.kernel.org/stable/c/b255531b27da33657…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 95118dd4edfec950898a00180c6f998df0a6406d , < 59eecf0ffde15670e6a5e10c47be67f73d843b20 (git) Affected: 95118dd4edfec950898a00180c6f998df0a6406d , < 5fb69e1eeea9d6cba80517e9f058b56b34bc3a81 (git) Affected: 95118dd4edfec950898a00180c6f998df0a6406d , < 7cadb03be37e761130edb153544fe0770a842b19 (git) Affected: 95118dd4edfec950898a00180c6f998df0a6406d , < 1d0bdbfe3e91c11f0a704c52443a9446a10d699c (git) Affected: 95118dd4edfec950898a00180c6f998df0a6406d , < ea3cd36d7382d5f8309df04c275d20df139ed42c (git) Affected: 95118dd4edfec950898a00180c6f998df0a6406d , < b255531b27da336571411248c2a72a350662bd09 (git)
Linux	Linux	Affected: 5.17 Unaffected: 0 , < 5.17 (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.134 , ≤ 6.6.* (semver) Unaffected: 6.12.81 , ≤ 6.12.* (semver) Unaffected: 6.18.22 , ≤ 6.18.* (semver) Unaffected: 6.19.12 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-43018

CVE-2026-43018 (GCVE-0-2026-43018)

Tags

Sightings

Nomenclature