Answer in brief
CVE-2023-52847 records a High severity (CVSS 7.8) vulnerability in media: bttv: fix use after free error due to btv->timeout timer. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2023-52847 records a High severity (CVSS 7.8) vulnerability in media: bttv: fix use after free error due to btv->timeout timer. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 4.15 | Not reported |
| Linux/Linuxgeneric | >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <b35fdade92c5058a5e727e233fe263b828de2c9a || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <2f3d9198cdae1cb079ec8652f4defacd481eab2b || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <51c94256a83fe4e17406c66ff3e1ad7d242d8574 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <20568d06f6069cb835e05eed432edf962645d226 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <1871014d6ef4812ad11ef7d838d73ce09d632267 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <847599fffa528b2cdec4e21b6bf7586dad982132 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <bd5b50b329e850d467e7bcc07b2b6bde3752fbda | bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9, b35fdade92c5058a5e727e233fe263b828de2c9a, 2f3d9198cdae1cb079ec8652f4defacd481eab2b, 51c94256a83fe4e17406c66ff3e1ad7d242d8574, 20568d06f6069cb835e05eed432edf962645d226, 1871014d6ef4812ad11ef7d838d73ce09d632267, 847599fffa528b2cdec4e21b6bf7586dad982132, bd5b50b329e850d467e7bcc07b2b6bde3752fbda |
Published upstream
May 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 4.15 | Not reported |
| Linux/Linuxgeneric | >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <b35fdade92c5058a5e727e233fe263b828de2c9a || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <2f3d9198cdae1cb079ec8652f4defacd481eab2b || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <51c94256a83fe4e17406c66ff3e1ad7d242d8574 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <20568d06f6069cb835e05eed432edf962645d226 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <1871014d6ef4812ad11ef7d838d73ce09d632267 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <847599fffa528b2cdec4e21b6bf7586dad982132 || >=162e6376ac58440beb6a2d2ee294f5d88ea58dd1 <bd5b50b329e850d467e7bcc07b2b6bde3752fbda | bbc3b8dd2cb7817e703f112d988e4f4728f0f2a9, b35fdade92c5058a5e727e233fe263b828de2c9a, 2f3d9198cdae1cb079ec8652f4defacd481eab2b, 51c94256a83fe4e17406c66ff3e1ad7d242d8574, 20568d06f6069cb835e05eed432edf962645d226, 1871014d6ef4812ad11ef7d838d73ce09d632267, 847599fffa528b2cdec4e21b6bf7586dad982132, bd5b50b329e850d467e7bcc07b2b6bde3752fbda |
Published upstream
May 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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
Quoted source text, attributed separately from HOL analysis.