svcrdma: Use svc_xprt_put to free listener on create failure
In the Linux kernel, the following vulnerability has been resolved: svcrdma: Use svc_xprt_put to free listener on create failure svc_rdma_create() calls kfree(cma_xprt) when svc_rdma_create_listen_id() fails. svc_xprt_init() has already acquired a net namespace reference via get_net_track(); kfree bypasses svc_xprt_free() which releases it. Replace the kfree() with svc_xprt_put() so the kref_init birth reference drops to zero and svc_xprt_free() dispatches svc_rdma_free() to clean up properly. sc_cm_id is still NULL at that point; the preceding patch added the necessary NULL guard in svc_rdma_free(). svc_xprt_free() also drops the module reference via module_put(), but the caller _svc_xprt_create() does the same on xpo_create failure, double-putting the single try_module_get() it acquired. Take a compensating __module_get() before the svc_xprt_put() to keep the count balanced, matching the convention in svc_rdma_accept()'s error path.
CVE-2026-89527
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-2026-89527
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": "4fb8518bdac8e85f6580ea3f586adf396cd472bc",
"lessThan": "2e35ec558b8cece9399a50141ecaeadbdb8768dc",
"versionType": "git"
},
{
"status": "affected",
"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc",
"lessThan": "ee70d690b5544b736706a9a5796aafb634013f54",
"versionType": "git"
},
{
"status": "affected",
"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc",
"lessThan": "e68380710fc970e07610b2f42594575ad35fdb1c",
"versionType": "git"
},
{
"status": "affected",
"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc",
"lessThan": "ac1dd6002f758ab7dd3e737757e5a1bb1c0b38d6",
"versionType": "git"
},
{
"status": "affected",
"version": "4fb8518bdac8e85f6580ea3f586adf396cd472bc",
"lessThan": "e346ef7bcb137f50c49f969330ab7dcf64ea1654",
"versionType": "git"
}
],
"programFiles": [
"net/sunrpc/xprtrdma/svc_rdma_transport.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.37"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.37",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/sunrpc/xprtrdma/svc_rdma_transport.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89527
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46669 · Revision 1
- Added to Heist Feed
- Publisher date