CVE-2026-74514
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Fix memory accounting for pinned/unpinned pages The account_mem() and unaccount_mem() functions call get_uid() which increments the reference count of struct user_struct on every invocation. But we don't decrement the count by calling free_uid(). It also accounted/unaccounted the pages against the current->mm. But its possible the unaccount_mem() can be called from a different process context than the one that originally pinned the pages. Let's fix this by storing the pinning process user_struct and mm_struct when accounting for pinned pages, and subsequently free these resources when the pages are unpinned. [[email protected]: Fixed whitespace]
Affected versions
Linux kernel versions
6.0
and later are affected. Fixed in
6.1.184,
6.6.152,
6.12.104,
6.18.44,
7.1.8,
7.2
and their respective stable series.
References
6 totalFrequently asked questions
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What is CVE-2026-74514?
CVE-2026-74514 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.0 onward and has been patched in 6.1.184, 6.6.152, 6.12.104 and others. CVE-2026-74514 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74514?
Yes. CVE-2026-74514 has been patched. Fixed versions include 6.1.184, 6.6.152, 6.12.104 and others. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74514 actively exploited?
No. CVE-2026-74514 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.