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CVE-2026-74273

cxl/region: Block region delete during region creation

In the Linux kernel, the following vulnerability has been resolved:

cxl/region: Block region delete during region creation

Expand the range lock, rename it "regions_lock", to disable region deletion
in the critical period between construct_region() and attach_target(), as
well as the period between device_add() and registering the remove actions.

Otherwise, userspace can confuse the kernel. It can violate the assumption
the region stays registered through the completion of cxl_add_to_region().
It can violate the assumption that devm_add_action_or_reset() is working
with a live 'struct cxl_region'.

It is ok for the region to disappear outside of those windows as that
mirrors device hotplug flows where the proper locks are held.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version a32320b71f085f8d82afedcf285f1682c8c00aed
Version < b0b6a9c65cb72c901fdcc6ae83d7afd70cdca1b8
Status affected
Version a32320b71f085f8d82afedcf285f1682c8c00aed
Version < d91feb88692e81b00cd22f0125cfcd04970b4a0b
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.3
Status affected
Version 0
Version < 6.3
Status unaffected
Version <= 7.1.*
Version 7.1.5
Status unaffected
Version <= *
Version 7.2
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.052
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/b0b6a9c65cb72c901fdcc6ae83d7afd70cdca1b8
https://git.kernel.org/stable/c/d91feb88692e81b00cd22f0125cfcd04970b4a0b