CVE-2026-74514KVM: s390: pci: Fix memory accounting for pinned/unpinned pages
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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. [borntraeger@linux.ibm.com: Fixed whitespace]
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before ad1c2ac7f15b224cf9ab26b593caa9bd1a4be72e; from 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before dc7465a364104526c56b922c9de9dfcc08a7d5f7; from 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before 47cfd75d9df7c8f425b0d769328fe43a8a8e606e; from 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before 70871b121f81d08879363cb1238a4c85c5c2800c; from 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before e3f732e086e438c52c7400bd2734bb166aa4752c; from 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc before 36f6999ecde3976731a8bfc0b8e667da6f593069 | CNA record |
References
- https://git.kernel.org/stable/c/ad1c2ac7f15b224cf9ab26b593caa9bd1a4be72e
- https://git.kernel.org/stable/c/dc7465a364104526c56b922c9de9dfcc08a7d5f7
- https://git.kernel.org/stable/c/47cfd75d9df7c8f425b0d769328fe43a8a8e606e
- https://git.kernel.org/stable/c/70871b121f81d08879363cb1238a4c85c5c2800c
- https://git.kernel.org/stable/c/e3f732e086e438c52c7400bd2734bb166aa4752c
- https://git.kernel.org/stable/c/36f6999ecde3976731a8bfc0b8e667da6f593069
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.