{"id":"CVE-2024-56623","summary":"scsi: qla2xxx: Fix use after free on unload","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix use after free on unload\n\nSystem crash is observed with stack trace warning of use after\nfree. There are 2 signals to tell dpc_thread to terminate (UNLOADING\nflag and kthread_stop).\n\nOn setting the UNLOADING flag when dpc_thread happens to run at the time\nand sees the flag, this causes dpc_thread to exit and clean up\nitself. When kthread_stop is called for final cleanup, this causes use\nafter free.\n\nRemove UNLOADING signal to terminate dpc_thread.  Use the kthread_stop\nas the main signal to exit dpc_thread.\n\n[596663.812935] kernel BUG at mm/slub.c:294!\n[596663.812950] invalid opcode: 0000 [#1] SMP PTI\n[596663.812957] CPU: 13 PID: 1475935 Comm: rmmod Kdump: loaded Tainted: G          IOE    --------- -  - 4.18.0-240.el8.x86_64 #1\n[596663.812960] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 08/20/2012\n[596663.812974] RIP: 0010:__slab_free+0x17d/0x360\n\n...\n[596663.813008] Call Trace:\n[596663.813022]  ? __dentry_kill+0x121/0x170\n[596663.813030]  ? _cond_resched+0x15/0x30\n[596663.813034]  ? _cond_resched+0x15/0x30\n[596663.813039]  ? wait_for_completion+0x35/0x190\n[596663.813048]  ? try_to_wake_up+0x63/0x540\n[596663.813055]  free_task+0x5a/0x60\n[596663.813061]  kthread_stop+0xf3/0x100\n[596663.813103]  qla2x00_remove_one+0x284/0x440 [qla2xxx]","modified":"2026-04-02T12:24:58.906974Z","published":"2024-12-27T14:51:26.484Z","related":["MGASA-2025-0030","MGASA-2025-0032","SUSE-SU-2025:0289-1","SUSE-SU-2025:0428-1","SUSE-SU-2025:0499-1","SUSE-SU-2025:0555-1","SUSE-SU-2025:0556-1","SUSE-SU-2025:0557-1","SUSE-SU-2025:0565-1","SUSE-SU-2025:0576-1","SUSE-SU-2025:0577-1","SUSE-SU-2025:0577-2","SUSE-SU-2025:0771-1","SUSE-SU-2025:0867-1","SUSE-SU-2025:20165-1","SUSE-SU-2025:20166-1","SUSE-SU-2025:20248-1","SUSE-SU-2025:20249-1","USN-7379-2","USN-7380-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56623.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/07c903db0a2ff84b68efa1a74a4de353ea591eb0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/12f04fc8580eafb0510f805749553eb6213f323e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/15369e774f27ec790f207de87c0b541e3f90b22d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6abf16d3c915b2feb68c1c8b25fcb71b13f98478"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b3e6f25176f248762a24d25ab8cf8c5e90874f80"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ca36d9d53745d5ec8946ef85006d4da605ea7c54"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56623.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56623"},{"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":"a29b3dd7aa14facc902b40b8b5c4dccbfb2ad7d0"},{"fixed":"12f04fc8580eafb0510f805749553eb6213f323e"},{"fixed":"ca36d9d53745d5ec8946ef85006d4da605ea7c54"},{"fixed":"b3e6f25176f248762a24d25ab8cf8c5e90874f80"},{"fixed":"15369e774f27ec790f207de87c0b541e3f90b22d"},{"fixed":"6abf16d3c915b2feb68c1c8b25fcb71b13f98478"},{"fixed":"07c903db0a2ff84b68efa1a74a4de353ea591eb0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56623.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}