🛡️ CVE-2023-52847
🟠 CVSS 7.0 — High ✅ No Known Exploit CWE-362 NVD
7.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: media: bttv: fix use after free error due to btv->timeout timer There may be some a race condition between timer function bttv_irq_timeout and bttv_remove. The timer is setup in probe and there is no timer_delete operation in remove function. When it hit kfree btv, the function might still be invoked, which will cause use after free bug. This bug is found by static analysis, it may be false positive. Fix it by adding del_timer_sync invoking to the remove function. cpu0 cpu1 bttv_probe ->timer_setup ->bttv_set_dma ->mod_timer; bttv_remove ->kfree(btv); ->bttv_irq_timeout ->USE btv

Details

Severity HIGH
CVSS Score 7.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-362
Public Exploit ✅ No
Source NVD
Published 2024-05-21
Updated 2026-06-08
Modified 2025-03-04

Affected Packages

Software From version Fixed in
linux-kernel 6.6 6.6.2

References

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