Answer in brief
CVE-2022-48821 records a High severity (CVSS 7.8) vulnerability in misc: fastrpc: avoid double fput() on failed usercopy. 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 |
| cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6cffd79504ce040f460831030d3069fa1c99bb71 <4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215 || >=6cffd79504ce040f460831030d3069fa1c99bb71 <a5ce7ee5fcc07583159f54ab4af5164de00148f5 || >=6cffd79504ce040f460831030d3069fa1c99bb71 <e4382d0a39f9a1e260d62fdc079ddae5293c037d || >=6cffd79504ce040f460831030d3069fa1c99bb71 <76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc || >=6cffd79504ce040f460831030d3069fa1c99bb71 <46963e2e0629cb31c96b1d47ddd89dc3d8990b34 | 4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215, a5ce7ee5fcc07583159f54ab4af5164de00148f5, e4382d0a39f9a1e260d62fdc079ddae5293c037d, 76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc, 46963e2e0629cb31c96b1d47ddd89dc3d8990b34 |
| Linux/Linuxgeneric | 5.1 | Not reported |
Published upstream
Jul 16, 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: misc: fastrpc: avoid double fput() on failed usercopy If the copy back to userland fails for the FASTRPC_IOCTL_ALLOC_DMA_BUFF ioctl(), we shouldn't assume that 'buf->dmabuf' is still valid. In fact, dma_buf_fd() called fd_install() before, i.e. "consumed" one reference, leaving us with none. Calling dma_buf_put() will therefore put a reference we no longer own, leading to a valid file descritor table entry for an already released 'file' object which is a straight use-after-free. Simply avoid calling dma_buf_put() and rely on the process exit code to do the necessary cleanup, if needed, i.e. if the file descriptor is still valid.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2022-48821 records a High severity (CVSS 7.8) vulnerability in misc: fastrpc: avoid double fput() on failed usercopy. 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 |
| cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=6cffd79504ce040f460831030d3069fa1c99bb71 <4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215 || >=6cffd79504ce040f460831030d3069fa1c99bb71 <a5ce7ee5fcc07583159f54ab4af5164de00148f5 || >=6cffd79504ce040f460831030d3069fa1c99bb71 <e4382d0a39f9a1e260d62fdc079ddae5293c037d || >=6cffd79504ce040f460831030d3069fa1c99bb71 <76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc || >=6cffd79504ce040f460831030d3069fa1c99bb71 <46963e2e0629cb31c96b1d47ddd89dc3d8990b34 | 4e6fd2b5fcf8e7119305a6042bd92e7f2b9ed215, a5ce7ee5fcc07583159f54ab4af5164de00148f5, e4382d0a39f9a1e260d62fdc079ddae5293c037d, 76f85c307ef9f10aa2cef1b1d5ee654c1f3345fc, 46963e2e0629cb31c96b1d47ddd89dc3d8990b34 |
| Linux/Linuxgeneric | 5.1 | Not reported |
Published upstream
Jul 16, 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: misc: fastrpc: avoid double fput() on failed usercopy If the copy back to userland fails for the FASTRPC_IOCTL_ALLOC_DMA_BUFF ioctl(), we shouldn't assume that 'buf->dmabuf' is still valid. In fact, dma_buf_fd() called fd_install() before, i.e. "consumed" one reference, leaving us with none. Calling dma_buf_put() will therefore put a reference we no longer own, leading to a valid file descritor table entry for an already released 'file' object which is a straight use-after-free. Simply avoid calling dma_buf_put() and rely on the process exit code to do the necessary cleanup, if needed, i.e. if the file descriptor is still valid.
Quoted source text, attributed separately from HOL analysis.