PCI/P2PDMA: Release per-CPU pgmap ref when vm_insert_page() fails
Summary
| CVE | CVE-2026-45880 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 14:17:01 UTC |
| Updated | 2026-06-25 21:12:11 UTC |
| 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(). |
Risk And Classification
Primary CVSS: v3.1 5.5 MEDIUM from [email protected]
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.000180000 probability, percentile 0.050770000 (date 2026-06-01)
Problem Types: NVD-CWE-noinfo
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 baa42b756d183a59572f3890981a3d32b8d05d40 git | Not specified |
| CNA | Linux | Linux | affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 51b7181cfbedf289ce794b6d97a1c596c309ec38 git | Not specified |
| CNA | Linux | Linux | affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 e19cce88ec4c4877f4ff2469099b9cf23cc3e93e git | Not specified |
| CNA | Linux | Linux | affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 a1f4dc72efc3204db95d052058d785cad7ce755f git | Not specified |
| CNA | Linux | Linux | affected 7e9c7ef83d785236f5a8c3761dd053fae9b92fb8 6220694c52a5a04102b48109e4f24e958b559bd3 git | Not specified |
| CNA | Linux | Linux | affected 6.2 | Not specified |
| CNA | Linux | Linux | unaffected 6.2 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.128 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.75 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.14 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.19.4 6.19.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.0 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/6220694c52a5a04102b48109e4f24e958b559bd3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/e19cce88ec4c4877f4ff2469099b9cf23cc3e93e | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/a1f4dc72efc3204db95d052058d785cad7ce755f | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/baa42b756d183a59572f3890981a3d32b8d05d40 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| git.kernel.org/stable/c/51b7181cfbedf289ce794b6d97a1c596c309ec38 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.