ublk: check import_ubuf() return value
In the Linux kernel, the following vulnerability has been resolved: ublk: check import_ubuf() return value import_ubuf() can fail if the address range (provided by the userspace ublk server) is outside the allowed user address space. Return that 0 bytes were copied if import_ubuf() fails rather than passing an uninitialized struct iov_iter to ublk_copy_user_pages().
CVE-2026-90324
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-2026-90324
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": "981f95a571e3ca20a496c0b77dbf6b06039c6648",
"lessThan": "7f97c762b5f6e0005c5c7d040ded73bf7fb3587e",
"versionType": "git"
},
{
"status": "affected",
"version": "981f95a571e3ca20a496c0b77dbf6b06039c6648",
"lessThan": "27ff6e8703f7a7160c728501da2f8ef8e7bb6b2f",
"versionType": "git"
},
{
"status": "affected",
"version": "981f95a571e3ca20a496c0b77dbf6b06039c6648",
"lessThan": "0121c84adb6a4cd6f7560b5895bd88f9899bbc1f",
"versionType": "git"
},
{
"status": "affected",
"version": "981f95a571e3ca20a496c0b77dbf6b06039c6648",
"lessThan": "5ac6019cb78e98c9608fda72726b36ddf8474dd7",
"versionType": "git"
},
{
"status": "affected",
"version": "981f95a571e3ca20a496c0b77dbf6b06039c6648",
"lessThan": "3831568792af75b6523fa93bb91560e29189cf55",
"versionType": "git"
}
],
"programFiles": [
"drivers/block/ublk_drv.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/block/ublk_drv.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90324
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #48663 · Revision 1
- Added to Heist Feed
- Publisher date