ghsa-9pph-vqgh-3wmp
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
riscv: Fix sleeping in invalid context in die()
die() can be called in exception handler, and therefore cannot sleep. However, die() takes spinlock_t which can sleep with PREEMPT_RT enabled. That causes the following warning:
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 285, name: mutex preempt_count: 110001, expected: 0 RCU nest depth: 0, expected: 0 CPU: 0 UID: 0 PID: 285 Comm: mutex Not tainted 6.12.0-rc7-00022-ge19049cf7d56-dirty #234 Hardware name: riscv-virtio,qemu (DT) Call Trace: dump_backtrace+0x1c/0x24 show_stack+0x2c/0x38 dump_stack_lvl+0x5a/0x72 dump_stack+0x14/0x1c __might_resched+0x130/0x13a rt_spin_lock+0x2a/0x5c die+0x24/0x112 do_trap_insn_illegal+0xa0/0xea _new_vmalloc_restore_context_a0+0xcc/0xd8 Oops - illegal instruction [#1]
Switch to use raw_spinlock_t, which does not sleep even with PREEMPT_RT enabled.
{
"affected": [],
"aliases": [
"CVE-2024-57939"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-21T13:15:07Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: Fix sleeping in invalid context in die()\n\ndie() can be called in exception handler, and therefore cannot sleep.\nHowever, die() takes spinlock_t which can sleep with PREEMPT_RT enabled.\nThat causes the following warning:\n\nBUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48\nin_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 285, name: mutex\npreempt_count: 110001, expected: 0\nRCU nest depth: 0, expected: 0\nCPU: 0 UID: 0 PID: 285 Comm: mutex Not tainted 6.12.0-rc7-00022-ge19049cf7d56-dirty #234\nHardware name: riscv-virtio,qemu (DT)\nCall Trace:\n dump_backtrace+0x1c/0x24\n show_stack+0x2c/0x38\n dump_stack_lvl+0x5a/0x72\n dump_stack+0x14/0x1c\n __might_resched+0x130/0x13a\n rt_spin_lock+0x2a/0x5c\n die+0x24/0x112\n do_trap_insn_illegal+0xa0/0xea\n _new_vmalloc_restore_context_a0+0xcc/0xd8\nOops - illegal instruction [#1]\n\nSwitch to use raw_spinlock_t, which does not sleep even with PREEMPT_RT\nenabled.",
"id": "GHSA-9pph-vqgh-3wmp",
"modified": "2025-02-02T12:30:25Z",
"published": "2025-01-21T15:31:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-57939"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/10c24df2e303f517fab0359392c11b6b1d553f2b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6a97f4118ac07cfdc316433f385dbdc12af5025e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/76ab0afcdbe8c9685b589016ee1c0e25fe596707"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8c38baa03ac8e18140faf36a3b955d30cad48e74"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c21df31fc2a4afc02a6e56511364e9e793ea92ec"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f48f060a4b36b5e96628f6c3fb1540f1e8dedb69"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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