nvme-pci: fix mempool alloc size
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix mempool alloc size Convert the max size to bytes to match the units of the divisor that calculates the worst-case number of PRP entries. The result is used to determine how many PRP Lists are required. The code was previously rounding this to 1 list, but we can require 2 in the worst case. In that scenario, the driver would corrupt memory beyond the size provided by the mempool. While unlikely to occur (you'd need a 4MB in exactly 127 phys segments on a queue that doesn't support SGLs), this memory corruption has been observed by kfence.
CVE-2022-50756
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-2022-50756
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": "943e942e6266f22babee5efeb00f8f672fbff5bd",
"lessThan": "dfb6d54893d544151e7f480bc44cfe7823f5ad23",
"versionType": "git"
},
{
"status": "affected",
"version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
"lessThan": "9141144b37f30e3e7fa024bcfa0a13011e546ba9",
"versionType": "git"
},
{
"status": "affected",
"version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
"lessThan": "e1777b4286e526c58b4ee699344b0ad85aaf83a0",
"versionType": "git"
},
{
"status": "affected",
"version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
"lessThan": "b1814724e0d7162bdf4799f2d565381bc2251c63",
"versionType": "git"
},
{
"status": "affected",
"version": "943e942e6266f22babee5efeb00f8f672fbff5bd",
"lessThan": "c89a529e823d51dd23c7ec0c047c7a454a428541",
"versionType": "git"
}
],
"programFiles": [
"drivers/nvme/host/pci.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.163",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.87",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.0.17",
"versionType": "semver",
"lessThanOrEqual": "6.0.*"
},
{
"status": "unaffected",
"version": "6.1.3",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/nvme/host/pci.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2022-50756
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30235 · Revision 1
- Added to Heist Feed
- Publisher date