CVE-2024-35887
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-35887
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-35887.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-35887
- Downstream
- Related
- Published
- 2024-05-19T09:15:09Z
- Modified
- 2025-08-09T20:01:27Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ax25: fix use-after-free bugs caused by ax25dsdel_timer
When the ax25 device is detaching, the ax25devdevicedown() calls ax25dsdeltimer() to cleanup the slavetimer. When the timer handler is running, the ax25dsdeltimer() that calls del_timer() in it will return directly. As a result, the use-after-free bugs could happen, one of the scenarios is shown below:
(Thread 1) | (Thread 2) | ax25_ds_timeout()ax25devdevicedown() | ax25dsdeltimer() | deltimer() | ax25devput() //FREE | | ax25dev-> //USE
In order to mitigate bugs, when the device is detaching, use timershutdownsync() to stop the timer.
- References