CVE-2025-23131 - "IBM DLM null pointer dereference vulnerability"

CVE-2025-23131 - "IBM DLM null pointer dereference vulnerability"

https://cvefeed.io/rssfeed/latest.atom / Wed, 04/16/2025 - 20:36
CVE ID : CVE-2025-23131
Published : April 16, 2025, 3:16 p.m. | 2 hours, 5 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: dlm: prevent NPD when writing a positive value to event_done do_uevent returns the value written to event_done. In case it is a positive value, new_lockspace would undo all the work, and lockspace would not be set. __dlm_new_lockspace, however, would treat that positive value as a success due to commit 8511a2728ab8 ("dlm: fix use count with multiple joins"). Down the line, device_create_lockspace would pass that NULL lockspace to dlm_find_lockspace_local, leading to a NULL pointer dereference. Treating such positive values as successes prevents the problem. Given this has been broken for so long, this is unlikely to break userspace expectations.
Severity: 0.0 | NA
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