CVE Watch4 ago 2026

CVE-2023-52847

In the Linux kernel, the following vulnerability has been resolved: media: bttv: fix use after free error due to btv->timeout timer There

CVSS

7.8

Alto

EPSS

0.2%

KEV

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Exploit Today

0-100

Publicado: 21 may 2024 · Última mod.: 4 ago 2026 · CWE-362 · CWE-416

EPSS · 30d

0.2%EPSS · 30 días0.2%

2026-07-112026-08-07

Descripción técnica

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

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