Vulnerability 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
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.15, < 4.19.299 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267Mailing ListPatch
- https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226Mailing ListPatch
- https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2bMailing ListPatch
- https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574Mailing ListPatch
- https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132Mailing ListPatch
- https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9aMailing ListPatch
- https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9Mailing ListPatch
- https://git.kernel.org/stable/c/bd5b50b329e850d467e7bcc07b2b6bde3752fbdaMailing ListPatch
- https://git.kernel.org/stable/c/1871014d6ef4812ad11ef7d838d73ce09d632267Mailing ListPatch
- https://git.kernel.org/stable/c/20568d06f6069cb835e05eed432edf962645d226Mailing ListPatch
- https://git.kernel.org/stable/c/2f3d9198cdae1cb079ec8652f4defacd481eab2bMailing ListPatch
- https://git.kernel.org/stable/c/51c94256a83fe4e17406c66ff3e1ad7d242d8574Mailing ListPatch
- https://git.kernel.org/stable/c/847599fffa528b2cdec4e21b6bf7586dad982132Mailing ListPatch
- https://git.kernel.org/stable/c/b35fdade92c5058a5e727e233fe263b828de2c9aMailing ListPatch
- https://git.kernel.org/stable/c/bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9Mailing ListPatch
FAQ
What is CVE-2023-52847?
CVE-2023-52847 is a vulnerability with a CVSS score of 7.0 (HIGH). 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...
How severe is CVE-2023-52847?
CVE-2023-52847 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52847?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.