RDMA: During rereg_mr ensure that REREG_ACCESS is compatible
In the Linux kernel, the following vulnerability has been resolved: RDMA: During rereg_mr ensure that REREG_ACCESS is compatible If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be re-evaluated to ensure it is properly pinned as RW. Since the umem is hidden inside each driver's mr struct add a ib_umem_check_rereg() function that each driver has to call before processing IB_MR_REREG_ACCESS. mlx4 has to retain its duplicate ib_access_writable check because it implements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items in place sequentially while the MR is live, so it will continue to not support this combination.
CVE-2026-52908
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-2026-52908
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": "b40656aa7d559adc1fe689396dc58b92a9a27286",
"lessThan": "09dc18894148381d3bfc550083b1236043870dce",
"versionType": "git"
},
{
"status": "affected",
"version": "b40656aa7d559adc1fe689396dc58b92a9a27286",
"lessThan": "eba5df21eda0fe7418efbea2f799f8ea1b8ca94c",
"versionType": "git"
},
{
"status": "affected",
"version": "b40656aa7d559adc1fe689396dc58b92a9a27286",
"lessThan": "2904e985a2917b5dac65df82733065e78a65fc9d",
"versionType": "git"
},
{
"status": "affected",
"version": "b40656aa7d559adc1fe689396dc58b92a9a27286",
"lessThan": "50334a05a950840b39a1ce3d2a173b4183db9b3e",
"versionType": "git"
},
{
"status": "affected",
"version": "b40656aa7d559adc1fe689396dc58b92a9a27286",
"lessThan": "badad6fad60def1b9805559dd81dbab3d97b82aa",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/core/umem.c",
"drivers/infiniband/hw/hns/hns_roce_mr.c",
"drivers/infiniband/hw/irdma/verbs.c",
"drivers/infiniband/hw/mlx4/mr.c",
"drivers/infiniband/hw/mlx5/mr.c",
"drivers/infiniband/sw/rxe/rxe_verbs.c",
"include/rdma/ib_umem.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.94",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.36",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.13",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/core/umem.c",
"drivers/infiniband/hw/hns/hns_roce_mr.c",
"drivers/infiniband/hw/irdma/verbs.c",
"drivers/infiniband/hw/mlx4/mr.c",
"drivers/infiniband/hw/mlx5/mr.c",
"drivers/infiniband/sw/rxe/rxe_verbs.c",
"include/rdma/ib_umem.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-52908
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40685 · Revision 1
- Added to Heist Feed
- Publisher date