RDMA/counter: Fix num_counters leak on bind_qp failure in alloc_and_bind()
In the Linux kernel, the following vulnerability has been resolved: RDMA/counter: Fix num_counters leak on bind_qp failure in alloc_and_bind() When __rdma_counter_bind_qp() fails in alloc_and_bind(), the error path jumps to err_mode which frees the counter without decrementing port_counter->num_counters. The only place that decrements is rdma_counter_free(), which is unreachable since the counter was never successfully bound. This leak accumulates across repeated failures, permanently preventing the port from switching to AUTO mode (-EBUSY in __counter_set_mode()) and blocking the MANUAL→NONE auto-revert in rdma_counter_free(). When the mode was NONE before the call, the MANUAL mode set by __counter_set_mode() also leaks since the revert logic is never reached. Add an err_bind label between the num_counters increment and the existing err_mode label. It decrements num_counters and mirrors the MANUAL→NONE revert from rdma_counter_free(), ensuring the port state is fully restored on bind failure.
CVE-2026-97477
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-2026-97477
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": "8bc205eff3056a9ed3850937cdd2192f05e6d3cb",
"lessThan": "7c9fee40fc8d8d928f44e99bc6e6adf93f9f2c2a",
"versionType": "git"
},
{
"status": "affected",
"version": "8bc205eff3056a9ed3850937cdd2192f05e6d3cb",
"lessThan": "1bcdeddddffadff9993657f6b0e5535d66ebd10f",
"versionType": "git"
},
{
"status": "affected",
"version": "8bc205eff3056a9ed3850937cdd2192f05e6d3cb",
"lessThan": "da95cb016812c0e012ea839f191926e35ca8f57f",
"versionType": "git"
},
{
"status": "affected",
"version": "8bc205eff3056a9ed3850937cdd2192f05e6d3cb",
"lessThan": "4fbc8230009f5b1bcd13cc74c5a6a43ddba141fd",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/core/counters.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/core/counters.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-97477
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48759 · Revision 1
- Added to Heist Feed
- Publisher date