RDMA/erdma: Hold CQ references when processing EQ events
In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Hold CQ references when processing EQ events EQ handlers look up CQs from dev->cq_xa and invoke CQ completion or error callbacks outside the xarray lock. erdma_destroy_cq() can erase the CQ from the xarray and free its queue buffer and doorbell record while a previously scheduled EQ handler is still using the CQ. Add a CQ refcount and take a reference under the xarray lock with refcount_inc_not_zero(). Remove the CQ from the xarray before dropping the destroy-path reference, then wait for in-flight EQ users before releasing CQ resources.
CVE-2026-90309
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-2026-90309
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": "155055771704f8cbb5c176a4309b7dc30a50450c",
"lessThan": "610ef81797bb4f709e8675c1d8d093bb9ccdcbd8",
"versionType": "git"
},
{
"status": "affected",
"version": "155055771704f8cbb5c176a4309b7dc30a50450c",
"lessThan": "c0a83f29a24c7e7f8516630848ef6db4c174deed",
"versionType": "git"
},
{
"status": "affected",
"version": "155055771704f8cbb5c176a4309b7dc30a50450c",
"lessThan": "05b8ca493dd02319bca93c640b259c2ba51ef321",
"versionType": "git"
},
{
"status": "affected",
"version": "155055771704f8cbb5c176a4309b7dc30a50450c",
"lessThan": "1fc9c1933959d2776a1ce7bf424251b8b5b586cd",
"versionType": "git"
},
{
"status": "affected",
"version": "155055771704f8cbb5c176a4309b7dc30a50450c",
"lessThan": "4545f355654d044d35a31cd01cc46f491a8a7c36",
"versionType": "git"
},
{
"status": "affected",
"version": "155055771704f8cbb5c176a4309b7dc30a50450c",
"lessThan": "98df2aee1459ee1c62c70cbe9b370d2a532aea36",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/hw/erdma/erdma_eq.c",
"drivers/infiniband/hw/erdma/erdma_verbs.c",
"drivers/infiniband/hw/erdma/erdma_verbs.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"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/infiniband/hw/erdma/erdma_eq.c",
"drivers/infiniband/hw/erdma/erdma_verbs.c",
"drivers/infiniband/hw/erdma/erdma_verbs.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90309
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #36662 · Revision 1
- Added to Heist Feed
- Publisher date