CVE-2023-52774

2024-05-2100:00:00

ubuntu.com

linux kernel

s390/dasd

vulnerability

device queue

concurrent access

kernel panic

fix

device lock

profile data

6.5 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

13.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:
s390/dasd: protect device queue against concurrent access In
dasd_profile_start() the amount of requests on the device queue are
counted. The access to the device queue is unprotected against concurrent
access. With a lot of parallel I/O, especially with alias devices enabled,
the device queue can change while dasd_profile_start() is accessing the
queue. In the worst case this leads to a kernel panic due to incorrect
pointer accesses. Fix this by taking the device lock before accessing the
queue and counting the requests. Additionally the check for a valid profile
data pointer can be done earlier to avoid unnecessary locking in a hot
path.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< anyUNKNOWN
ubuntu20.04noarchlinux< anyUNKNOWN
ubuntu22.04noarchlinux< anyUNKNOWN
ubuntu23.10noarchlinux< anyUNKNOWN
ubuntu24.04noarchlinux< anyUNKNOWN
ubuntu14.04noarchlinux< anyUNKNOWN
ubuntu16.04noarchlinux< anyUNKNOWN
ubuntu18.04noarchlinux-aws< anyUNKNOWN
ubuntu20.04noarchlinux-aws< anyUNKNOWN
ubuntu22.04noarchlinux-aws< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< any	UNKNOWN
ubuntu	20.04	noarch	linux	< any	UNKNOWN
ubuntu	22.04	noarch	linux	< any	UNKNOWN
ubuntu	23.10	noarch	linux	< any	UNKNOWN
ubuntu	24.04	noarch	linux	< any	UNKNOWN
ubuntu	14.04	noarch	linux	< any	UNKNOWN
ubuntu	16.04	noarch	linux	< any	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< any	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< any	UNKNOWN