{"id":"CVE-2025-68324","summary":"scsi: imm: Fix use-after-free bug caused by unfinished delayed work","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: imm: Fix use-after-free bug caused by unfinished delayed work\n\nThe delayed work item 'imm_tq' is initialized in imm_attach() and\nscheduled via imm_queuecommand() for processing SCSI commands.  When the\nIMM parallel port SCSI host adapter is detached through imm_detach(),\nthe imm_struct device instance is deallocated.\n\nHowever, the delayed work might still be pending or executing\nwhen imm_detach() is called, leading to use-after-free bugs\nwhen the work function imm_interrupt() accesses the already\nfreed imm_struct memory.\n\nThe race condition can occur as follows:\n\nCPU 0(detach thread)   | CPU 1\n                       | imm_queuecommand()\n                       |   imm_queuecommand_lck()\nimm_detach()           |     schedule_delayed_work()\n  kfree(dev) //FREE    | imm_interrupt()\n                       |   dev = container_of(...) //USE\n                           dev-\u003e //USE\n\nAdd disable_delayed_work_sync() in imm_detach() to guarantee proper\ncancellation of the delayed work item before imm_struct is deallocated.","modified":"2026-04-02T13:03:33.260693Z","published":"2025-12-18T15:02:49.230Z","related":["openSUSE-SU-2025:15836-1","openSUSE-SU-2026:10301-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68324.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/31ab2aad7a7b7501e904a09bf361e44671f66092"},{"type":"WEB","url":"https://git.kernel.org/stable/c/48dd41fa2d6c6a0c50e714deeba06ffe7f91961b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9e434426cc23ad5e2aad649327b59aea00294b13"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab58153ec64fa3fc9aea09ca09dc9322e0b54a7c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68324.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68324"},{"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":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"},{"fixed":"31ab2aad7a7b7501e904a09bf361e44671f66092"},{"fixed":"48dd41fa2d6c6a0c50e714deeba06ffe7f91961b"},{"fixed":"9e434426cc23ad5e2aad649327b59aea00294b13"},{"fixed":"ab58153ec64fa3fc9aea09ca09dc9322e0b54a7c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68324.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.12"},{"fixed":"6.12.63"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.13"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68324.json"}}],"schema_version":"1.7.5"}