{"api_version":"1","generated_at":"2026-10-04T10:25:39+00:00","cve":"CVE-2026-92514","urls":{"html":"https://cve.report/CVE-2026-92514","api":"https://cve.report/api/cve/CVE-2026-92514.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-92514","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-92514"},"summary":{"title":"RDMA/erdma: Fix CEQ tasklet use-after-free on removal","description":"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 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:54","updated_at":"2026-09-17 17:17:54"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/0ca79979384f031d710c4b3bae065dcb5d95aca3","name":"https://git.kernel.org/stable/c/0ca79979384f031d710c4b3bae065dcb5d95aca3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/61a25b8d333e1eb2a189881d516f8d5194e26840","name":"https://git.kernel.org/stable/c/61a25b8d333e1eb2a189881d516f8d5194e26840","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f738c0a372d36a10dfae6dc357717c13b2aa72f4","name":"https://git.kernel.org/stable/c/f738c0a372d36a10dfae6dc357717c13b2aa72f4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a60c36d8d17f1b86705523d5eb6d290df28831e5","name":"https://git.kernel.org/stable/c/a60c36d8d17f1b86705523d5eb6d290df28831e5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0e8b78dabb1f156db05ffe74c6eae861167c7c21","name":"https://git.kernel.org/stable/c/0e8b78dabb1f156db05ffe74c6eae861167c7c21","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6e129c1310abfa786a510cc63e69c5ef12349048","name":"https://git.kernel.org/stable/c/6e129c1310abfa786a510cc63e69c5ef12349048","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92514","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92514","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f2a0a630b953451a59a2612ad8c29246638f0a38 0e8b78dabb1f156db05ffe74c6eae861167c7c21 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f2a0a630b953451a59a2612ad8c29246638f0a38 6e129c1310abfa786a510cc63e69c5ef12349048 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f2a0a630b953451a59a2612ad8c29246638f0a38 f738c0a372d36a10dfae6dc357717c13b2aa72f4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f2a0a630b953451a59a2612ad8c29246638f0a38 a60c36d8d17f1b86705523d5eb6d290df28831e5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f2a0a630b953451a59a2612ad8c29246638f0a38 61a25b8d333e1eb2a189881d516f8d5194e26840 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected f2a0a630b953451a59a2612ad8c29246638f0a38 0ca79979384f031d710c4b3bae065dcb5d95aca3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"92514","cve":"CVE-2026-92514","epss":"0.002050000","percentile":"0.109400000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/infiniband/hw/erdma/erdma_eq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0e8b78dabb1f156db05ffe74c6eae861167c7c21","status":"affected","version":"f2a0a630b953451a59a2612ad8c29246638f0a38","versionType":"git"},{"lessThan":"6e129c1310abfa786a510cc63e69c5ef12349048","status":"affected","version":"f2a0a630b953451a59a2612ad8c29246638f0a38","versionType":"git"},{"lessThan":"f738c0a372d36a10dfae6dc357717c13b2aa72f4","status":"affected","version":"f2a0a630b953451a59a2612ad8c29246638f0a38","versionType":"git"},{"lessThan":"a60c36d8d17f1b86705523d5eb6d290df28831e5","status":"affected","version":"f2a0a630b953451a59a2612ad8c29246638f0a38","versionType":"git"},{"lessThan":"61a25b8d333e1eb2a189881d516f8d5194e26840","status":"affected","version":"f2a0a630b953451a59a2612ad8c29246638f0a38","versionType":"git"},{"lessThan":"0ca79979384f031d710c4b3bae065dcb5d95aca3","status":"affected","version":"f2a0a630b953451a59a2612ad8c29246638f0a38","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/infiniband/hw/erdma/erdma_eq.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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 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."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:10:23.462Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/0e8b78dabb1f156db05ffe74c6eae861167c7c21"},{"url":"https://git.kernel.org/stable/c/6e129c1310abfa786a510cc63e69c5ef12349048"},{"url":"https://git.kernel.org/stable/c/f738c0a372d36a10dfae6dc357717c13b2aa72f4"},{"url":"https://git.kernel.org/stable/c/a60c36d8d17f1b86705523d5eb6d290df28831e5"},{"url":"https://git.kernel.org/stable/c/61a25b8d333e1eb2a189881d516f8d5194e26840"},{"url":"https://git.kernel.org/stable/c/0ca79979384f031d710c4b3bae065dcb5d95aca3"}],"title":"RDMA/erdma: Fix CEQ tasklet use-after-free on removal","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-92514","datePublished":"2026-09-17T16:10:23.462Z","dateReserved":"2026-09-16T12:21:13.873Z","dateUpdated":"2026-09-17T16:10:23.462Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:54","lastModifiedDate":"2026-09-17 17:17:54","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"92514","Ordinal":"1","Title":"RDMA/erdma: Fix CEQ tasklet use-after-free on removal","CVE":"CVE-2026-92514","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"92514","Ordinal":"1","NoteData":"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 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.","Type":"Description","Title":"RDMA/erdma: Fix CEQ tasklet use-after-free on removal"}]}}}