RDMA/erdma: Fix CEQ tasklet use-after-free on removal (CVE-2026-92514) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-92514

RDMA/erdma: Fix CEQ tasklet use-after-free on removal

Answer in brief

CVE-2026-92514 records a Unknown severity vulnerability in RDMA/erdma: Fix CEQ tasklet use-after-free on removal. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=f2a0a630b953451a59a2612ad8c29246638f0a38 <0e8b78dabb1f156db05ffe74c6eae861167c7c21 \|\| >=f2a0a630b953451a59a2612ad8c29246638f0a38 <6e129c1310abfa786a510cc63e69c5ef12349048 \|\| >=f2a0a630b953451a59a2612ad8c29246638f0a38 <f738c0a372d36a10dfae6dc357717c13b2aa72f4 \|\| >=f2a0a630b953451a59a2612ad8c29246638f0a38 <a60c36d8d17f1b86705523d5eb6d290df28831e5 \|\| >=f2a0a630b953451a59a2612ad8c29246638f0a38 <61a25b8d333e1eb2a189881d516f8d5194e26840 \|\| >=f2a0a630b953451a59a2612ad8c29246638f0a38 <0ca79979384f031d710c4b3bae065dcb5d95aca3	0e8b78dabb1f156db05ffe74c6eae861167c7c21, 6e129c1310abfa786a510cc63e69c5ef12349048, f738c0a372d36a10dfae6dc357717c13b2aa72f4, a60c36d8d17f1b86705523d5eb6d290df28831e5, 61a25b8d333e1eb2a189881d516f8d5194e26840, 0ca79979384f031d710c4b3bae065dcb5d95aca3
Linux/Linuxgeneric	6.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 0e8b78dabb1f156db05ffe74c6eae861167c7c21 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Fix CEQ tasklet use-after-free on removal Each CEQ interrupt handler only schedules eqc->tasklet. The tasklet calls erdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring through get_next_valid_eqe() and updates eq->dbrec through notify_eq(). erdma_ceqs_uninit() frees each CEQ IRQ and then destroys its EQ. free_irq() prevents another hard IRQ and waits for an in-flight handler, but it does not drain a tasklet that the handler already scheduled. The tasklet can therefore access eq->qbuf or eq->dbrec after erdma_eq_destroy() frees them. Clearing ceq_cb->ready does not synchronize with a tasklet that already passed the check at the start of erdma_ceq_completion_handler(). Kill the tasklet after free_irq(), when no handler can schedule it again, and before erdma_ceq_uninit_one() releases the EQ buffers.

Quoted source text, attributed separately from HOL analysis.