nvmet: pci-epf: put CQ ref on create_cq mapping failure
In the Linux kernel, the following vulnerability has been resolved: nvmet: pci-epf: put CQ ref on create_cq mapping failure nvmet_pci_epf_create_cq() calls nvmet_cq_create(), which takes a reference on the controller and installs the completion queue. If the subsequent PCI address-space mapping fails or returns a too-small partial mapping, the function jumps to err_internal / err_unmap_queue without calling nvmet_cq_put(). The matching put in nvmet_pci_epf_delete_cq() is gated on NVMET_PCI_EPF_Q_LIVE, which is only set after the mapping succeeds, so teardown never releases these references. A remote PCI host that drives Create IO CQ commands with a failing PRP1/pci_addr therefore leaks the CQ and a controller reference on each attempt. Drop the CQ reference on the mapping-failure paths. The err_internal and err_unmap_queue labels are only reachable after nvmet_cq_create() has succeeded, so this pairs the create/put correctly.
CVE-2026-80821
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80821
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186",
"lessThan": "f31650243c1ab32394077f234685e89ed8dece84",
"versionType": "git"
},
{
"status": "affected",
"version": "0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186",
"lessThan": "b5f97fae2503a763fa0f953abf5f121b0fef7d0d",
"versionType": "git"
},
{
"status": "affected",
"version": "0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186",
"lessThan": "56a7b6a6880dbabe28214ff88df8d229ca3a944a",
"versionType": "git"
},
{
"status": "affected",
"version": "0faa0fe6f90ea59b10d1b0f15ce0eb0c18eff186",
"lessThan": "659ae9d02cb5d72c76f74fff7441eb8fb64d8f5c",
"versionType": "git"
}
],
"programFiles": [
"drivers/nvme/target/pci-epf.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.14",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.47",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.11",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2.1",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/nvme/target/pci-epf.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80821
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34837 · Revision 1
- Added to Heist Feed
- Publisher date