NONE
CVE-2026-45880
Published: May 27, 2026· Updated: May 27, 2026
Official Description
In the Linux kernel, the following vulnerability has been resolved:
PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
When vm_insert_page() fails in p2pmem_alloc_mmap(), p2pmem_alloc_mmap()
doesn't invoke percpu_ref_put() to free the per-CPU ref of pgmap acquired
after gen_pool_alloc_owner(), and memunmap_pages() will hang forever when
trying to remove the PCI device.
Fix it by adding the missed percpu_ref_put().
Technical Analysis
CVE-2026-45880 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
Affected Vendors & Products
Mentioned vendors (from description):
Linux
CPE data not yet available in NVD for this CVE.
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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Rapid7 / Metasploit
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (5)
Quick Facts
CVE IDCVE-2026-45880
SeverityNONE
CISA KEVNo
PublishedMay 27, 2026
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-45880 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.