RDMA/core: Validate the passed in fops for ib_get_ucaps()
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Validate the passed in fops for ib_get_ucaps() Sashiko pointed out it is not safe to rely only on the devt because char/block alias so if the user finds a block device with the same dev_t it can masquerade as a ucap cdev fd. Test the f_ops to only accept authentic cdevs.
CVE-2026-53188
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-2026-53188
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": "61e51682816d395307f78ae06d640089054c28ab",
"lessThan": "96b6e98ff12d50ed5817230c6f1188e1150d225d",
"versionType": "git"
},
{
"status": "affected",
"version": "61e51682816d395307f78ae06d640089054c28ab",
"lessThan": "aa181287ebdcc53ee0ba5c2f8243e2d541ebc19b",
"versionType": "git"
},
{
"status": "affected",
"version": "61e51682816d395307f78ae06d640089054c28ab",
"lessThan": "4a1b1ac2744694a2ecd66a84bdb1445f4ef24bee",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/core/ucaps.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/core/ucaps.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53188
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40770 · Revision 1
- Added to Heist Feed
- Publisher date