CVE - CVE-2023-52847

CVE-ID
CVE-2023-52847	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267 URL:https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267 MISC:https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226 URL:https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226 MISC:https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2b URL:https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2b MISC:https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574 URL:https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574 MISC:https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132 URL:https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132 MISC:https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9a URL:https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9a MISC:https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9 URL:https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9 MISC:https://git.kernel.org/stable/c/bd5b50b329e850d467e7bcc07b2b6bde3752fbda URL:https://git.kernel.org/stable/c/bd5b50b329e850d467e7bcc07b2b6bde3752fbda
Assigning CNA
kernel.org
Date Record Created
20240521	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240521)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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