{"id":"CVE-2026-92514","summary":"RDMA/erdma: Fix CEQ tasklet use-after-free on removal","details":"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-\u003etasklet. The tasklet calls\nerdma_ceq_completion_handler(), which reads the DMA-coherent EQ ring\nthrough get_next_valid_eqe() and updates eq-\u003edbrec 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-\u003eqbuf or eq-\u003edbrec after\nerdma_eq_destroy() frees them.\n\nClearing ceq_cb-\u003eready 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.","modified":"2026-09-19T03:47:31.086373262Z","published":"2026-09-17T16:10:23.462Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92514.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0ca79979384f031d710c4b3bae065dcb5d95aca3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0e8b78dabb1f156db05ffe74c6eae861167c7c21"},{"type":"WEB","url":"https://git.kernel.org/stable/c/61a25b8d333e1eb2a189881d516f8d5194e26840"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6e129c1310abfa786a510cc63e69c5ef12349048"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a60c36d8d17f1b86705523d5eb6d290df28831e5"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f738c0a372d36a10dfae6dc357717c13b2aa72f4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92514.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92514"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f2a0a630b953451a59a2612ad8c29246638f0a38"},{"fixed":"0e8b78dabb1f156db05ffe74c6eae861167c7c21"},{"fixed":"6e129c1310abfa786a510cc63e69c5ef12349048"},{"fixed":"f738c0a372d36a10dfae6dc357717c13b2aa72f4"},{"fixed":"a60c36d8d17f1b86705523d5eb6d290df28831e5"},{"fixed":"61a25b8d333e1eb2a189881d516f8d5194e26840"},{"fixed":"0ca79979384f031d710c4b3bae065dcb5d95aca3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92514.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92514.json"}}],"schema_version":"1.9.0"}