RDMA/mad: Fix receive buffer leak when PKey enforcement fails
In the Linux kernel, the following vulnerability has been resolved: RDMA/mad: Fix receive buffer leak when PKey enforcement fails ib_mad_complete_recv() initializes mad_recv_wc->rmpp_list and then runs ib_mad_enforce_security() before linking recv_buf onto that list. On failure it calls ib_free_recv_mad(), which only walks rmpp_list and frees the ib_mad_private of every buffer found there. As the list is still empty at that point, nothing is freed at all. The caller cannot clean up either: ib_mad_recv_done() sets recv to NULL right after ib_mad_complete_recv() returns, assuming the MAD layer took ownership of the buffer. Every MAD that fails the PKey check therefore leaks one ib_mad_private (about 300 bytes per IB port MAD, ~2K for OPA), and a remote node can trigger this repeatedly by sending MADs with a wrong PKey. Link recv_buf onto rmpp_list right after the list is initialized, so the error path has something to free.
CVE-2026-98354
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-2026-98354
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": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "4617c9a856188674dddb0ca66979746d07688579",
"versionType": "git"
},
{
"status": "affected",
"version": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "8e2036fb47a5b152d53eadbd35abf311bd34cc7f",
"versionType": "git"
},
{
"status": "affected",
"version": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "bad289e42f512646a988f278f536d21547df73f1",
"versionType": "git"
},
{
"status": "affected",
"version": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "752b30e9d339008e5ce7eed412e9446078916129",
"versionType": "git"
},
{
"status": "affected",
"version": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "39c4ea72a40503e102ae07e6776005f96ca078a6",
"versionType": "git"
},
{
"status": "affected",
"version": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "5091e25ec503f7fc02723ca435226467b68caac7",
"versionType": "git"
},
{
"status": "affected",
"version": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "c0d8df85db146d6275e226cb950023be69dd6c77",
"versionType": "git"
},
{
"status": "affected",
"version": "47a2b338fe63200d716d2e24131cdb49f17c77da",
"lessThan": "3476c28c9addfa253f505e6bd87f1f5598b961d0",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/core/mad.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.13"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.13",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/core/mad.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98354
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38433 · Revision 1
- Added to Heist Feed
- Publisher date