RDMA/irdma: Prevent user-triggered null deref on QP create
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Prevent user-triggered null deref on QP create Previously, the user QP creation path would only attempt to populate iwqp->iwpbl if the user-provided req.user_wqe_bufs field was non-zero. The problem is that iwqp->iwpbl is unconditionally dereferenced later on in irdma_setup_virt_qp. While there was a check for iwqp->iwpbl != NULL, this check would only occur if req.user_wqe_bufs was non-zero. The end result is that a user could send a zero user_wqe_bufs value and trigger a null ptr deref. Fix this by unconditionally calling irdma_get_pbl and bailing if it fails, similar to the CQ and SRQ paths.
CVE-2026-68418
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-2026-68418
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": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
"lessThan": "d52ff592abfcd56234f266aa245c489f70b1c554",
"versionType": "git"
},
{
"status": "affected",
"version": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
"lessThan": "ad68e0b759f9569f0dfea84f035c91eadb979802",
"versionType": "git"
},
{
"status": "affected",
"version": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
"lessThan": "ec675b4cdfd378d8c9dd8c93126c024f2469bd79",
"versionType": "git"
},
{
"status": "affected",
"version": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
"lessThan": "728211c815f6eef28dd3df2a5b6297483185aa20",
"versionType": "git"
},
{
"status": "affected",
"version": "b48c24c2d710cf34810c555dcef883a3d35a9c08",
"lessThan": "b9b0889071569d43623c260074e159cd8f26adb1",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/hw/irdma/verbs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.14"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.14",
"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": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/hw/irdma/verbs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68418
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46476 · Revision 1
- Added to Heist Feed
- Publisher date