CVE-2024-57891
- Source
- https://cve.org/CVERecord?id=CVE-2024-57891
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-57891.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-57891
- Downstream
- Related
- Published
- 2025-01-15T13:05:43Z
- Modified
- 2026-08-12T03:51:17Z
- Summary
- sched_ext: Fix invalid irq restore in scx_ops_bypass()
- Details
-
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().
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57891.json" }- References
-
- https://git.kernel.org/stable/c/18b2093f4598d8ee67a8153badc93f0fa7686b8a
- https://git.kernel.org/stable/c/786362ce60d79967875f43e0ba55ad7a5376c133
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/57xxx/CVE-2024-57891.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-57891
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git