In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix potential glock use-after-free on unmount
When a DLM lockspace is released and there ares still locks in that
lockspace, DLM will unlock those locks automatically. Commit
fb6791d100d1b started exploiting this behavior to speed up filesystem
unmount: gfs2 would simply free glocks it didn't want to unlock and then
release the lockspace. This didn't take the bast callbacks for
asynchronous lock contention notifications into account, which remain
active until until a lock is unlocked or its lockspace is released.
To prevent those callbacks from accessing deallocated objects, put the
glocks that should not be unlocked on the sd_dead_glocks list, release
the lockspace, and only then free those glocks.
As an additional measure, ignore unexpected ast and bast callbacks if
the receiving glock is dead.
Metrics
Affected Vendors & Products
References
History
Thu, 12 Sep 2024 08:30:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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Wed, 11 Sep 2024 13:30:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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Fri, 06 Sep 2024 13:45:00 +0000
Type | Values Removed | Values Added |
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First Time appeared |
Redhat rhel Eus
|
|
CPEs | cpe:/a:redhat:rhel_eus:9.2 cpe:/a:redhat:rhel_eus:9.2::nfv cpe:/o:redhat:rhel_eus:8.8 |
|
Vendors & Products |
Redhat rhel Eus
|
Wed, 21 Aug 2024 19:00:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Redhat
Redhat rhel Aus Redhat rhel E4s Redhat rhel Tus |
|
CPEs | cpe:/o:redhat:rhel_aus:8.6 cpe:/o:redhat:rhel_e4s:8.6 cpe:/o:redhat:rhel_tus:8.6 |
|
Vendors & Products |
Redhat
Redhat rhel Aus Redhat rhel E4s Redhat rhel Tus |
MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-06-19T13:35:36.274Z
Updated: 2024-09-11T17:34:56.284Z
Reserved: 2024-06-18T19:36:34.923Z
Link: CVE-2024-38570
Vulnrichment
Updated: 2024-08-02T04:12:25.837Z
NVD
Status : Analyzed
Published: 2024-06-19T14:15:17.153
Modified: 2024-08-01T20:25:42.533
Link: CVE-2024-38570
Redhat