CVE-2022-48636
High
Description
In the Linux kernel, the following vulnerability has been resolved: s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup Fix Oops in dasd_alias_get_start_dev() function caused by the pavgroup pointer being NULL. The pavgroup pointer is checked on the entrance of the function but without the lcu->lock being held. Therefore there is a race window between dasd_alias_get_start_dev() and _lcu_update() which sets pavgroup to NULL with the lcu->lock held. Fix by checking the pavgroup pointer with lcu->lock held.
SeverityHigh
CVSS7.8
Exploit probability15. percentile0.2%
Product
Linux Kernel
PublishedApr 28, 2024
First seenApr 28, 2024
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel4.9.330, 4.14.295, 4.19.260, 5.4.215, 5.10.146, 5.15.71, 5.19.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 2.6.25 ≤ v < 4.9.330, 4.10 ≤ v < 4.14.295, 4.15 ≤ v < 4.19.260, 4.20 ≤ v < 5.4.215, 5.5 ≤ v < 5.10.146, 5.11 ≤ v < 5.15.71, 5.16 ≤ v < 5.19.12, 6.0 | 4.9.330, 4.14.295, 4.19.260, 5.4.215, 5.10.146, 5.15.71, 5.19.12 |
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