RDMA/irdma: Fix double free related to rereg_user_mr
In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix double free related to rereg_user_mr If IB_MR_REREG_TRANS is set during rereg_user_mr, the umem will be released and a new one will be allocated in irdma_rereg_mr_trans. If any step of irdma_rereg_mr_trans fails after the new umem is allocated, it releases the umem, but does not set iwmr->region to NULL. The problem is that this failure is propagated to the user, who will then call ibv_dereg_mr (as they should). Then, the dereg_mr path will see a non-NULL umem and attempt to call ib_umem_release again. Fix this by setting iwmr->region to NULL after ib_umem_release. Fixed: 5ac388db27c4 ("RDMA/irdma: Add support to re-register a memory region")
CVE-2026-43120
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-2026-43120
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": "715fdb3b30541cc8180b7cdc6aa9f8c307afdf25",
"lessThan": "62298a48f8b8788ad8b8464e6ffdf1ddebd2217e",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "66964118f1f50ed85001c8fc9f7ab5bbdd021ee0",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "0f22c32141acdcda266b26cab2b830baf870f3e0",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "0c5d70bcb9d2275a1c8515a924016fcfeb4ab441",
"versionType": "git"
},
{
"status": "affected",
"version": "5ac388db27c443dadfbb0b8b23fa7ccf429d901a",
"lessThan": "29a3edd7004bb635d299fb9bc6f0ea4ef13ed5a2",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.120",
"lessThan": "6.6.136",
"versionType": "semver"
}
],
"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": "6.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.136",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.83",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.24",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.14",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/hw/irdma/verbs.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-43120
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40028 · Revision 1
- Added to Heist Feed
- Publisher date