RDMA/ionic: Embed counter driver data in rdma_counter allocation
In the Linux kernel, the following vulnerability has been resolved: RDMA/ionic: Embed counter driver data in rdma_counter allocation Commit 7e53b31acc7f ("RDMA/core: Create and destroy rdma_counter using rdma_zalloc_drv_obj()") requires drivers implementing counter ops to embed struct rdma_counter in a driver-specific struct, register its size via INIT_RDMA_OBJ_SIZE, and provide a counter_init callback. The ionic driver was merged without this adaptation, causing a NULL pointer dereference in alloc_and_bind() since rdma_zalloc_drv_obj() allocates zero bytes when size_rdma_counter is unset. Consolidate struct ionic_counter into a new struct ionic_rdma_counter that embeds struct rdma_counter, replace the xarray with a lightweight ida for ID allocation, and add the required counter_init and INIT_RDMA_OBJ_SIZE declarations.
CVE-2026-89509
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-2026-89509
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": "ea4c399642b85dc30f44d90ee805c6a18fa03062",
"lessThan": "c98197ee3cd28288da13dc9881bb9e74daa7cbbc",
"versionType": "git"
},
{
"status": "affected",
"version": "ea4c399642b85dc30f44d90ee805c6a18fa03062",
"lessThan": "08b8630b557828aedb1d9ef0a6e2ec421f334ee2",
"versionType": "git"
},
{
"status": "affected",
"version": "ea4c399642b85dc30f44d90ee805c6a18fa03062",
"lessThan": "cf3ebd89e754015625fee90aa938f6bc79a2c974",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/hw/ionic/ionic_hw_stats.c",
"drivers/infiniband/hw/ionic/ionic_ibdev.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"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": [
"drivers/infiniband/hw/ionic/ionic_hw_stats.c",
"drivers/infiniband/hw/ionic/ionic_ibdev.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89509
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #35036 · Revision 1
- Added to Heist Feed
- Publisher date