{"id":"CVE-2026-92514","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Fix CEQ tasklet use-after-free on removal\n\nEach CEQ interrupt handler only schedules eqc->tasklet","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Fix CEQ tasklet use-after-free on removal\n\nEach CEQ interrupt handler only schedules eqc->tasklet. The tasklet calls\nerdma_ceq_completion_handler(), which r…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= f2a0a630b953451a59a2612ad8c29246638f0a38 < 0e8b78dabb1f156db05ffe74c6eae861167c7c21","Linux >= f2a0a630b953451a59a2612ad8c29246638f0a38 < 6e129c1310abfa786a510cc63e69c5ef12349048","Linux >= f2a0a630b953451a59a2612ad8c29246638f0a38 < f738c0a372d36a10dfae6dc357717c13b2aa72f4","Linux >= f2a0a630b953451a59a2612ad8c29246638f0a38 < a60c36d8d17f1b86705523d5eb6d290df28831e5","Linux >= f2a0a630b953451a59a2612ad8c29246638f0a38 < 61a25b8d333e1eb2a189881d516f8d5194e26840","Linux >= f2a0a630b953451a59a2612ad8c29246638f0a38 < 0ca79979384f031d710c4b3bae065dcb5d95aca3","Linux 6.0"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:54.243","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92514","references":[{"url":"https://git.kernel.org/stable/c/0ca79979384f031d710c4b3bae065dcb5d95aca3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/0e8b78dabb1f156db05ffe74c6eae861167c7c21","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/61a25b8d333e1eb2a189881d516f8d5194e26840","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6e129c1310abfa786a510cc63e69c5ef12349048","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a60c36d8d17f1b86705523d5eb6d290df28831e5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f738c0a372d36a10dfae6dc357717c13b2aa72f4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92514.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92514"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536323"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92514"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92514"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-92514.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-17T16:21:47.778Z","epss":0.00206,"epssPercentile":0.10512,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-825"],"slug":"CVE-2026-92514","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Fix CEQ tasklet use-after-free on removal\n\nEach CEQ interrupt handler only schedules eqc->tasklet. The tasklet calls\nerdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring\nthrough get_next_valid_eqe() and updates eq->dbrec through notify_eq().\n\nerdma_ceqs_uninit() frees each CEQ IRQ and then destroys its EQ.\nfree_irq() prevents another hard IRQ and waits for an in-flight handler,\nbut it does not drain a tasklet that the handler already scheduled. The\ntasklet can therefore access eq->qbuf or eq->dbrec after\nerdma_eq_destroy() frees them.\n\nClearing ceq_cb->ready does not synchronize with a tasklet that already\npassed the check at the start of erdma_ceq_completion_handler().\n\nKill the tasklet after free_irq(), when no handler can schedule it again,\nand before erdma_ceq_uninit_one() releases the EQ buffers.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · updated 2026-10-20 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92514.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":225523,"id":"CVE-2026-92514","ts":1792498283089,"field":"cvss","old":null,"new":"5.5"},{"seq":225522,"id":"CVE-2026-92514","ts":1792498283089,"field":"severity","old":"none","new":"medium"}]}