{"id":"CVE-2026-74690","title":"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 …","summary":"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 …","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","published":"2026-08-22","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:10:00.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74690","references":[{"url":"https://git.kernel.org/stable/c/774394d27930ec4cf4cb3eed8ab6a4d20cb2430a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b1896543ce59c4258625a35cf41e23a9a1f80ea2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc3021284050ecb3bba8a7851340cedcb5037928","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/950dac9e8c4e3cf68fa8c01f77d3ac3b7369c6a9"},{"url":"https://git.kernel.org/stable/c/58803870ba0841e53b630a1290c6838b091dd128"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74690.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-74690"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2521494"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74690"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74690"},{"url":"https://kernelcve.org/list/?q=CVE-2026-74690"},{"url":"https://lore.kernel.org/linux-cve-announce/2026082233-CVE-2026-74690-0118@gregkh/T"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"epss":0.00196,"epssPercentile":0.09187,"ingestedAt":"2026-10-14T13:30:58.538Z","vendor":"Linux","product":"Linux","affected":["Linux >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695 < 950dac9e8c4e3cf68fa8c01f77d3ac3b7369c6a9","Linux >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695 < 58803870ba0841e53b630a1290c6838b091dd128","Linux >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695 < fc3021284050ecb3bba8a7851340cedcb5037928","Linux >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695 < 774394d27930ec4cf4cb3eed8ab6a4d20cb2430a","Linux >= 684b89bc39ce4f204b1a2b180f39f2eb36a6b695 < b1896543ce59c4258625a35cf41e23a9a1f80ea2","Linux 4.19"],"cwe":["CWE-416"],"scores":{"nvd":8.4,"vendor":4.7},"slug":"CVE-2026-74690","body":"## Overview\n\nIn 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.\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 9 · no fix planned: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9 · updated 2026-10-26 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-74690.json)","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}