CVE-2021-46979
In the Linux kernel, the following vulnerability has been resolved: iio: core: fix ioctl handlers removal Currently ioctl handlers are removed twice.
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: iio: core: fix ioctl handlers removal Currently ioctl handlers are removed twice. For the first time during iio_device_unregister() then later on inside iio_device_unregister_eventset() and iio_buffers_free_sysfs_and_mask(). Double free leads to kernel panic. Fix this by not touching ioctl handlers list directly but rather letting code responsible for registration call the matching cleanup routine itself.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-415
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/11e1cae5da4096552f7c091476cbadbc0d1817daPatch
- https://git.kernel.org/stable/c/901f84de0e16bde10a72d7eb2f2eb73fcde8fa1aPatch
- https://git.kernel.org/stable/c/ab6c935ba3a04317632f3b8b68675bdbaf395303Patch
- https://git.kernel.org/stable/c/11e1cae5da4096552f7c091476cbadbc0d1817daPatch
- https://git.kernel.org/stable/c/901f84de0e16bde10a72d7eb2f2eb73fcde8fa1aPatch
- https://git.kernel.org/stable/c/ab6c935ba3a04317632f3b8b68675bdbaf395303Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.