CVE-2026-97477RDMA/counter: Fix num_counters leak on bind_qp failure in alloc_and_bind()
- —Not scoredno CVSS score yet
- 0.17%Exploitation in 30 daysEPSS · top 93% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 36 days later
· 36 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.17% · top 93% of all CVEs (12 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 8bc205eff3056a9ed3850937cdd2192f05e6d3cb – < 4517686789b404827591c52f79e9a57822371ca0
- affected 8bc205eff3056a9ed3850937cdd2192f05e6d3cb – < 7c9fee40fc8d8d928f44e99bc6e6adf93f9f2c2a
- affected 8bc205eff3056a9ed3850937cdd2192f05e6d3cb – < 1bcdeddddffadff9993657f6b0e5535d66ebd10f
- affected 8bc205eff3056a9ed3850937cdd2192f05e6d3cb – < da95cb016812c0e012ea839f191926e35ca8f57f
- affected 8bc205eff3056a9ed3850937cdd2192f05e6d3cb – < 4fbc8230009f5b1bcd13cc74c5a6a43ddba141fd
- affected 5.11
- unaffected < 5.11
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.53 – ≤ 6.18.*
- unaffected 7.2 – ≤ *
References
References5
- https://git.kernel.org/stable/c/4517686789b404827591c52f79e9a57822371ca0 (opens in a new tab)
- https://git.kernel.org/stable/c/7c9fee40fc8d8d928f44e99bc6e6adf93f9f2c2a (opens in a new tab)
- https://git.kernel.org/stable/c/1bcdeddddffadff9993657f6b0e5535d66ebd10f (opens in a new tab)
- https://git.kernel.org/stable/c/da95cb016812c0e012ea839f191926e35ca8f57f (opens in a new tab)
- https://git.kernel.org/stable/c/4fbc8230009f5b1bcd13cc74c5a6a43ddba141fd (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-86075 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-97477)Record last updated .