SB20260925132 - Race condition in Linux kernel bluetooth
Published: September 25, 2026
Security Bulletin ID
SB20260925132
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Race condition (CVE-ID: CVE-2026-93247)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in Bluetooth management discovery state handling when concurrently updating and reading the UUID discovery filter state. A local user can initiate concurrent Bluetooth service discovery operations to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/18fda026a13c5abd6c1e0dfd3549f490b73378fb
- https://git.kernel.org/stable/c/59eecbe2f2f38d8f3e1104bd11da97f9a2c58998
- https://git.kernel.org/stable/c/bbd262d2d750b67b15a5e1008d3848309c87e7a7
- https://git.kernel.org/stable/c/c3f63610bceaa182e4683b23cc47baf36b5f1496
- https://git.kernel.org/stable/c/ee2135a14fb2a3e176149122764d293f0796b1eb
- https://git.kernel.org/stable/c/f02c01ccd12cb2b8a290077d4c90f29a6e109b16