cbcvebase.
CVE-2024-57891
published 2025-01-15

CVE-2024-57891: In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix invalid irq restore in scx_ops_bypass() While adding outer irqsave/restore…

PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.18%
7.5th percentile
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix invalid irq restore in scx_ops_bypass() While adding outer irqsave/restore locking, 0e7ffff1b811 ("scx: Fix raciness in scx_ops_bypass()") forgot to convert an inner rq_unlock_irqrestore() to rq_unlock() which could re-enable IRQ prematurely leading to the following warning: raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 1 PID: 96 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40 ... Sched_ext: create_dsq (enabling) pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : warn_bogus_irq_restore+0x30/0x40 lr : warn_bogus_irq_restore+0x30/0x40 ... Call trace: warn_bogus_irq_restore+0x30/0x40 (P) warn_bogus_irq_restore+0x30/0x40 (L) scx_ops_bypass+0x224/0x3b8 scx_ops_enable.isra.0+0x2c8/0xaa8 bpf_scx_reg+0x18/0x30 ... irq event stamp: 33739 hardirqs last enabled at (33739): [] scx_ops_bypass+0x174/0x3b8 hardirqs last disabled at (33738): [] _raw_spin_lock_irqsave+0xb4/0xd8 Drop the stray _irqrestore().

Affected

9 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.9-1 (forky)linux 6.12.9-1 (forky)
linuxlinux——
linuxlinux>= 0e7ffff1b8117b05635c87d3c9099f6aa9c9b689 < 786362ce60d79967875f43e0ba55ad7a5376c133786362ce60d79967875f43e0ba55ad7a5376c133
linuxlinux>= 0e7ffff1b8117b05635c87d3c9099f6aa9c9b689 < 18b2093f4598d8ee67a8153badc93f0fa7686b8a18b2093f4598d8ee67a8153badc93f0fa7686b8a
linuxlinux_kernel——
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 6.12.9-16.12.9-1
linuxlinux_kernel>= 0 < 6.12.9-16.12.9-1
linuxlinux_kernel>= 6.12.1 < 6.12.96.12.9

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_redhat5.5MEDIUM
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