{"id":"CVE-2026-74690","summary":"s390/ism: Fix UAF of sba and ieq during ism_dev_exit()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/ism: Fix UAF of sba and ieq during ism_dev_exit()\n\nA ism interrupt handler can be active in parallel with ism_dev_exit(),\naccessing freed data structures.\n\nNo new interrupts will be generated after unregister_ieq(). Drain ongoing\ninterrupt handlers by free_irq(), before freeing ism data structures.","modified":"2026-08-27T11:30:55.700955329Z","published":"2026-08-22T15:32:54.650Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74690.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/774394d27930ec4cf4cb3eed8ab6a4d20cb2430a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b1896543ce59c4258625a35cf41e23a9a1f80ea2"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc3021284050ecb3bba8a7851340cedcb5037928"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74690.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74690"},{"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":"684b89bc39ce4f204b1a2b180f39f2eb36a6b695"},{"fixed":"fc3021284050ecb3bba8a7851340cedcb5037928"},{"fixed":"774394d27930ec4cf4cb3eed8ab6a4d20cb2430a"},{"fixed":"b1896543ce59c4258625a35cf41e23a9a1f80ea2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74690.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.19.0"},{"fixed":"6.18.45"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74690.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}