Vulnerability in Linux
CVE-2021-47364
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.
EPSS: 0.002 (15.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux — versions b8d47d8813055ce38c0d2ad913d5462017e52692, 5.8, 0
- Linux Linux_kernel — versions 5.15
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2021-47364?
- CVE-2021-47364 is a medium-severity vulnerability in Linux, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2024-05-21.
- How severe is CVE-2021-47364?
- Medium severity. CVSS v3 base score is 5.5 out of 10.