{"id":"CVE-2024-57891","summary":"sched_ext: Fix invalid irq restore in scx_ops_bypass()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Fix invalid irq restore in scx_ops_bypass()\n\nWhile adding outer irqsave/restore locking, 0e7ffff1b811 (\"scx: Fix raciness\nin scx_ops_bypass()\") forgot to convert an inner rq_unlock_irqrestore() to\nrq_unlock() which could re-enable IRQ prematurely leading to the following\nwarning:\n\n  raw_local_irq_restore() called with IRQs enabled\n  WARNING: CPU: 1 PID: 96 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40\n  ...\n  Sched_ext: create_dsq (enabling)\n  pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n  pc : warn_bogus_irq_restore+0x30/0x40\n  lr : warn_bogus_irq_restore+0x30/0x40\n  ...\n  Call trace:\n   warn_bogus_irq_restore+0x30/0x40 (P)\n   warn_bogus_irq_restore+0x30/0x40 (L)\n   scx_ops_bypass+0x224/0x3b8\n   scx_ops_enable.isra.0+0x2c8/0xaa8\n   bpf_scx_reg+0x18/0x30\n  ...\n  irq event stamp: 33739\n  hardirqs last  enabled at (33739): [\u003cffff8000800b699c\u003e] scx_ops_bypass+0x174/0x3b8\n  hardirqs last disabled at (33738): [\u003cffff800080d48ad4\u003e] _raw_spin_lock_irqsave+0xb4/0xd8\n\nDrop the stray _irqrestore().","modified":"2026-03-20T12:41:03.081204Z","published":"2025-01-15T13:05:43.607Z","related":["SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","openSUSE-SU-2025:20081-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57891.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/18b2093f4598d8ee67a8153badc93f0fa7686b8a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/786362ce60d79967875f43e0ba55ad7a5376c133"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57891.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-57891"},{"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":"0e7ffff1b8117b05635c87d3c9099f6aa9c9b689"},{"fixed":"786362ce60d79967875f43e0ba55ad7a5376c133"},{"fixed":"18b2093f4598d8ee67a8153badc93f0fa7686b8a"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-57891.json"}}],"schema_version":"1.7.5"}