VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-92514: Linux kernel · RDMA/erdma: Fix CEQ tasklet use-after-free on removal

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in f738c0a372d36a10dfae6dc357717c13b2aa72f4 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f738c0a372d36a10dfae6dc357717c13b2aa72f4, a60c36d8d17f1b86705523d5eb6d290df28831e5, 61a25b8d333e1eb2a189881d516f8d5194e26840 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ f2a0a630b953451a59a2612ad8c29246638f0a38, < f738c0a372d36a10dfae6dc357717c13b2aa72f4	Fixed in f738c0a372d36a10dfae6dc357717c13b2aa72f4
LinuxLinux	Affected ≥ f2a0a630b953451a59a2612ad8c29246638f0a38, < a60c36d8d17f1b86705523d5eb6d290df28831e5	Fixed in a60c36d8d17f1b86705523d5eb6d290df28831e5
LinuxLinux	Affected ≥ f2a0a630b953451a59a2612ad8c29246638f0a38, < 61a25b8d333e1eb2a189881d516f8d5194e26840	Fixed in 61a25b8d333e1eb2a189881d516f8d5194e26840
LinuxLinux	Affected ≥ f2a0a630b953451a59a2612ad8c29246638f0a38, < 6e129c1310abfa786a510cc63e69c5ef12349048	Fixed in 6e129c1310abfa786a510cc63e69c5ef12349048
LinuxLinux	Affected ≥ f2a0a630b953451a59a2612ad8c29246638f0a38, < 0e8b78dabb1f156db05ffe74c6eae861167c7c21	Fixed in 0e8b78dabb1f156db05ffe74c6eae861167c7c21
LinuxLinux	Affected ≥ f2a0a630b953451a59a2612ad8c29246638f0a38, < 0ca79979384f031d710c4b3bae065dcb5d95aca3	Fixed in 0ca79979384f031d710c4b3bae065dcb5d95aca3

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.

References

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