cbcvebase.
CVE-2021-46994
published 2024-02-28

CVE-2021-46994: In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix resume from sleep before interface was brought up Since 8ce8c0abcba3 the…

PriorityP417medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.24%
14.6th percentile
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix resume from sleep before interface was brought up Since 8ce8c0abcba3 the driver queues work via priv->restart_work when resuming after suspend, even when the interface was not previously enabled. This causes a null dereference error as the workqueue is only allocated and initialized in mcp251x_open(). To fix this we move the workqueue init to mcp251x_can_probe() as there is no reason to do it later and repeat it whenever mcp251x_open() is called. [mkl: fix error handling in mcp251x_stop()]

Affected

13 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.10.38-1 (bookworm)linux 5.10.38-1 (bookworm)
linuxlinux——
linuxlinux>= 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef < eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21eecb4df8ec9f896b19ee05bfa632ac6c1dcd8f21
linuxlinux>= 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef < 6f8f1c27b577de15f69fefce3c502bb6300d825c6f8f1c27b577de15f69fefce3c502bb6300d825c
linuxlinux>= 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef < e1e10a390fd9479209c4d834d916ca5e6d5d396be1e10a390fd9479209c4d834d916ca5e6d5d396b
linuxlinux>= 8ce8c0abcba314e1fe954a1840f6568bf5aef2ef < 03c427147b2d3e503af258711af4fc792b89b0af03c427147b2d3e503af258711af4fc792b89b0af
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 0 < 5.10.38-15.10.38-1
linuxlinux_kernel>= 5.11 < 5.11.225.11.22
linuxlinux_kernel>= 5.12 < 5.12.55.12.5
linuxlinux_kernel>= 5.5 < 5.10.385.10.38

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.