# CVE-2021-47364: linux: In the Linux kernel, the following vulnerability has been resolved:  comedi: Fix memory leak in compat_insnlist()  `c...

CVE-2021-47364 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47364, released May 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-47364
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 21, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  comedi: Fix memory leak in compat_insnlist()  `compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST` ioctl (whenwhen `CONFIG_COMPAT` is enabled).  It allocates memory to temporarily hold an array of `struct comedi_insn` converted from the 32-bit version in user space.  This memory is only being freed if there is a fault while filling the array, otherwise it is leaked.  Add a call to `kfree()` to fix the leak.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.14.9-1 | [DEBIAN-CVE-2021-47364](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47364.md) | May 21, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.14.9-1 | [DEBIAN-CVE-2021-47364](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47364.md) | May 21, 2024 |
| Linux | linux Debian 14 | 5.14.9-1 | [DEBIAN-CVE-2021-47364](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47364.md) | May 21, 2024 |

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