ghsa-4p97-h32p-wgf6
Vulnerability from github
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": [],
"aliases": [
"CVE-2024-57891"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-15T13:15:13Z",
"severity": null
},
"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().",
"id": "GHSA-4p97-h32p-wgf6",
"modified": "2025-01-15T15:31:25Z",
"published": "2025-01-15T15:31:25Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57891"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/18b2093f4598d8ee67a8153badc93f0fa7686b8a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/786362ce60d79967875f43e0ba55ad7a5376c133"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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