Local system crash via oversized Bluetooth name
Published Apr 17, 2024 · Updated May 23, 2026
A buffer overflow in Linux Bluetooth hci_core in affected kernels allows local users to crash the system through an oversized device name. hci_dev_info copies hdev->name into its fixed eight-byte name field with strcpy, so a longer name writes past the destination buffer. Exploitation requires local low-privileged access; the published assessment limits the consequence to system availability.
Summary
What happened
A buffer overflow in Linux Bluetooth hci_core in affected kernels allows local users to crash the system through an oversized device name. hci_dev_info copies hdev->name into its fixed eight-byte name field with strcpy, so a longer name writes past the destination buffer. Exploitation requires local low-privileged access; the published assessment limits the consequence to system availability.
The record
- CVE
- CVE-2024-26889
- Published
- Apr 17, 2024
- Updated
- May 23, 2026
- Vendor
- Siemens
- Product
- SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
- Classifications
- CWE-120, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 17, 2024CVE publishedPublication date reported by the CVE source.
- May 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <*
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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