svcrdma: Reorder rpcrdma_rn_unregister before rdma_destroy_id
In the Linux kernel, the following vulnerability has been resolved: svcrdma: Reorder rpcrdma_rn_unregister before rdma_destroy_id svc_rdma_free() caches rdma->sc_cm_id->device before teardown, then calls rdma_destroy_id(sc_cm_id) which frees the cm_id. rpcrdma_rn_unregister() follows, but between those two calls the transport's sc_rn entry is still installed in the device's rd_xa. A concurrent ib_unregister_device walk can dispatch svc_rdma_xprt_done() against the now-freed sc_cm_id. Move rpcrdma_rn_unregister() before rdma_destroy_id() so the transport's notification entry is removed from the xarray before the cm_id it references is destroyed. Also guard the sc_cm_id dereference with a NULL check: the following patches introduce paths that reach svc_rdma_free() with sc_cm_id == NULL (listener create failure, ADDR_CHANGE replacement failure).
CVE-2026-89535
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-2026-89535
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": "c4de97f7c45434985e5dbf2d6ccc9eca676e37fe",
"lessThan": "fcd4a752ac840d39356f4d2a424d3aca4e39716b",
"versionType": "git"
},
{
"status": "affected",
"version": "c4de97f7c45434985e5dbf2d6ccc9eca676e37fe",
"lessThan": "9f2f5d0999364c7070306cd422d8babc2621070d",
"versionType": "git"
},
{
"status": "affected",
"version": "c4de97f7c45434985e5dbf2d6ccc9eca676e37fe",
"lessThan": "cfca6eb3345ba4a23cf9a1153ad09bf19faabfc9",
"versionType": "git"
},
{
"status": "affected",
"version": "c4de97f7c45434985e5dbf2d6ccc9eca676e37fe",
"lessThan": "4488e912973773d64368828acf3b8e39d93650ae",
"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": "6.12"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.12",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"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-2026-89535
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #35056 · Revision 1
- Added to Heist Feed
- Publisher date