CVE-2026-92513
RDMA/mana_ib: drain QP references after partial table insertion
Published Sep 17, 2026
CVSS n/a
EPSS < 1%
KEV · Not listed
Description
In the Linux kernel, the following vulnerability has been resolved:
RDMA/mana_ib: drain QP references after partial table insertion
mana_table_store_ud_qp() publishes a QP at its send-queue id before
inserting the receive-queue id, dropping the XArray lock between the two
xa_insert_irq() calls. A concurrent completion handler can look up the QP
and take a transient reference. When the second insertion fails, the
rollback erased only the send-queue entry and returned, leaving both the
initial table reference and the transient reference outstanding while RDMA
core frees the QP, causing a use-after-free.
Drain the reference as normal destruction does: drop the initial reference
and wait for qp->free, releasing the QP only after every concurrent lookup
returns its reference.
RDMA/mana_ib: drain QP references after partial table insertion
mana_table_store_ud_qp() publishes a QP at its send-queue id before
inserting the receive-queue id, dropping the XArray lock between the two
xa_insert_irq() calls. A concurrent completion handler can look up the QP
and take a transient reference. When the second insertion fails, the
rollback erased only the send-queue entry and returned, leaving both the
initial table reference and the transient reference outstanding while RDMA
core frees the QP, causing a use-after-free.
Drain the reference as normal destruction does: drop the initial reference
and wait for qp->free, releasing the QP only after every concurrent lookup
returns its reference.
Affected Products
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CVE record
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NVD configurations
No data
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Red Hat packages
No data
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OpenCVE enrichment
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux Kernel |
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| Linux | Linux Kernel |
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Remediation
Tracking
Advisories
| Source | ID | Title |
|---|---|---|
 Ubuntu USN |
USN-9019-1 | Linux kernel (Azure) vulnerabilities |
| Ubuntu USN |
USN-9020-1 | Linux kernel vulnerabilities |
Metrics
No CVSS v4.0
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.206% probability within 30 days)
Key SSVC decision points have not yet been added.
References
History
Sep 19, 2026 6:45 AM
Weaknesses updated
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-416 |
Sep 17, 2026 4:30 PM
Description updated. Title updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references
View changes
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: drain QP references after partial table insertion mana_table_store_ud_qp() publishes a QP at its send-queue id before inserting the receive-queue id, dropping the XArray lock between the two xa_insert_irq() calls. A concurrent completion handler can look up the QP and take a transient reference. When the second insertion fails, the rollback erased only the send-queue entry and returned, leaving both the initial table reference and the transient reference outstanding while RDMA core frees the QP, causing a use-after-free. Drain the reference as normal destruction does: drop the initial reference and wait for qp->free, releasing the QP only after every concurrent lookup returns its reference. | |
| Title | RDMA/mana_ib: drain QP references after partial table insertion | |
| First Time appeared |
Linux
Linux linux Kernel |
|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
|
| References |
|
Subscriptions
Weaknesses
