CVE-2023-54160
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_sdei: Fix sleep from invalid context BUG
Running a preempt-rt (v6.2-rc3-rt1) based kernel on an Ampere Altra triggers:
sdei_cpuhp_up() is called in the STARTING hotplug section, which runs with interrupts disabled. Use a CPUHP_AP_ONLINE_DYN entry instead to execute the cpuhp cb later, with preemption enabled.
SDEI originally got its own cpuhp slot to allow interacting with perf. It got superseded by pNMI and this early slot is not relevant anymore. [1]
Some SDEI calls (e.g. SDEI_1_0_FN_SDEI_PE_MASK) take actions on the calling CPU. It is checked that preemption is disabled for them. _ONLINE cpuhp cb are executed in the 'per CPU hotplug thread'.
Leer descripción completaMostrar menos
Preemption is enabled in those threads, but their cpumask is limited to 1 CPU. Move 'WARN_ON_ONCE(preemptible())' statements so that SDEI cpuhp cb don't trigger them.
Also add a check for the SDEI_1_0_FN_SDEI_PRIVATE_RESET SDEI call which acts on the calling CPU.
[1]: https://lore.kernel.org/all/5813b8c5-ae3e-87fd-fccc-94c9cd08816d@arm.com/
Detalles técnicos trazas, registros y código del informe original
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46
in_atomic(): 0, irqs_disabled(): 128, non_block: 0, pid: 24, name: cpuhp/0
preempt_count: 0, expected: 0
RCU nest depth: 0, expected: 0
3 locks held by cpuhp/0/24:
#0: ffffda30217c70d0 (cpu_hotplug_lock){++++}-{0:0}, at: cpuhp_thread_fun+0x5c/0x248
#1: ffffda30217c7120 (cpuhp_state-up){+.+.}-{0:0}, at: cpuhp_thread_fun+0x5c/0x248
#2: ffffda3021c711f0 (sdei_list_lock){....}-{3:3}, at: sdei_cpuhp_up+0x3c/0x130
irq event stamp: 36
hardirqs last enabled at (35): [<ffffda301e85b7bc>] finish_task_switch+0xb4/0x2b0
hardirqs last disabled at (36): [<ffffda301e812fec>] cpuhp_thread_fun+0x21c/0x248
softirqs last enabled at (0): [<ffffda301e80b184>] copy_process+0x63c/0x1ac0
softirqs last disabled at (0): [<0000000000000000>] 0x0
CPU: 0 PID: 24 Comm: cpuhp/0 Not tainted 5.19.0-rc3-rt5-[...]
Hardware name: WIWYNN Mt.Jade Server [...]
Call trace:
dump_backtrace+0x114/0x120
show_stack+0x20/0x70
dump_stack_lvl+0x9c/0xd8
dump_stack+0x18/0x34
__might_resched+0x188/0x228
rt_spin_lock+0x70/0x120
sdei_cpuhp_up+0x3c/0x130
cpuhp_invoke_callback+0x250/0xf08
cpuhp_thread_fun+0x120/0x248
smpboot_thread_fn+0x280/0x320
kthread+0x130/0x140
ret_from_fork+0x10/0x20CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.21%
- Percentil entre todas las CVEs puntuadas: 10
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/18d5ea5b746120a3972e6c347ad9428228445327
- https://git.kernel.org/stable/c/48ac727ea4a3577eb1b4e24f807ba532c47930f9
- https://git.kernel.org/stable/c/59842a9ba27d5390ae5bf3233a92cad3a26d495c
- https://git.kernel.org/stable/c/66caf22787714c925e755719c293aaf3cb0b873b
- https://git.kernel.org/stable/c/7d8f5ccc826b39e05ff252b1fccd808c7a0725e0
- https://git.kernel.org/stable/c/a8267bc8de736cae927165191b52fbc20d101dd1
- https://git.kernel.org/stable/c/d2c48b2387eb89e0bf2a2e06e30987cf410acad4
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-54160",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "f92b5462a2f22d13a75dc663f7b2fac16a3e61cb",
"lessThan": "59842a9ba27d5390ae5bf3233a92cad3a26d495c",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "48ac727ea4a3577eb1b4e24f807ba532c47930f9",
"versionType": "git"
},
{
"status": "affected",
"version": "f92b5462a2f22d13a75dc663f7b2fac16a3e61cb",
"lessThan": "7d8f5ccc826b39e05ff252b1fccd808c7a0725e0",
"versionType": "git"
},
{
"status": "affected",
"version": "f92b5462a2f22d13a75dc663f7b2fac16a3e61cb",
"lessThan": "66caf22787714c925e755719c293aaf3cb0b873b",
"versionType": "git"
},
{
"status": "affected",
"version": "f92b5462a2f22d13a75dc663f7b2fac16a3e61cb",
"lessThan": "a8267bc8de736cae927165191b52fbc20d101dd1",
"versionType": "git"
},
{
"status": "affected",
"version": "f92b5462a2f22d13a75dc663f7b2fac16a3e61cb",
"lessThan": "18d5ea5b746120a3972e6c347ad9428228445327",
"versionType": "git"
},
{
"status": "affected",
"version": "f92b5462a2f22d13a75dc663f7b2fac16a3e61cb",
"lessThan": "d2c48b2387eb89e0bf2a2e06e30987cf410acad4",
"versionType": "git"
}
],
"programFiles": [
"drivers/firmware/arm_sdei.c",
"include/linux/cpuhotplug.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.284",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.244",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.181",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.113",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.30",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.3.4",
"versionType": "semver",
"lessThanOrEqual": "6.3.*"
},
{
"status": "unaffected",
"version": "6.4",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/firmware/arm_sdei.c",
"include/linux/cpuhotplug.h"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-12-24T13:16:18.060",
"references": [
{
"url": "https://git.kernel.org/stable/c/18d5ea5b746120a3972e6c347ad9428228445327",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/48ac727ea4a3577eb1b4e24f807ba532c47930f9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/59842a9ba27d5390ae5bf3233a92cad3a26d495c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/66caf22787714c925e755719c293aaf3cb0b873b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/7d8f5ccc826b39e05ff252b1fccd808c7a0725e0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a8267bc8de736cae927165191b52fbc20d101dd1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d2c48b2387eb89e0bf2a2e06e30987cf410acad4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_sdei: Fix sleep from invalid context BUG\n\nRunning a preempt-rt (v6.2-rc3-rt1) based kernel on an Ampere Altra\ntriggers:\n\n BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46\n in_atomic(): 0, irqs_disabled(): 128, non_block: 0, pid: 24, name: cpuhp/0\n preempt_count: 0, expected: 0\n RCU nest depth: 0, expected: 0\n 3 locks held by cpuhp/0/24:\n #0: ffffda30217c70d0 (cpu_hotplug_lock){++++}-{0:0}, at: cpuhp_thread_fun+0x5c/0x248\n #1: ffffda30217c7120 (cpuhp_state-up){+.+.}-{0:0}, at: cpuhp_thread_fun+0x5c/0x248\n #2: ffffda3021c711f0 (sdei_list_lock){....}-{3:3}, at: sdei_cpuhp_up+0x3c/0x130\n irq event stamp: 36\n hardirqs last enabled at (35): [<ffffda301e85b7bc>] finish_task_switch+0xb4/0x2b0\n hardirqs last disabled at (36): [<ffffda301e812fec>] cpuhp_thread_fun+0x21c/0x248\n softirqs last enabled at (0): [<ffffda301e80b184>] copy_process+0x63c/0x1ac0\n softirqs last disabled at (0): [<0000000000000000>] 0x0\n CPU: 0 PID: 24 Comm: cpuhp/0 Not tainted 5.19.0-rc3-rt5-[...]\n Hardware name: WIWYNN Mt.Jade Server [...]\n Call trace:\n dump_backtrace+0x114/0x120\n show_stack+0x20/0x70\n dump_stack_lvl+0x9c/0xd8\n dump_stack+0x18/0x34\n __might_resched+0x188/0x228\n rt_spin_lock+0x70/0x120\n sdei_cpuhp_up+0x3c/0x130\n cpuhp_invoke_callback+0x250/0xf08\n cpuhp_thread_fun+0x120/0x248\n smpboot_thread_fn+0x280/0x320\n kthread+0x130/0x140\n ret_from_fork+0x10/0x20\n\nsdei_cpuhp_up() is called in the STARTING hotplug section,\nwhich runs with interrupts disabled. Use a CPUHP_AP_ONLINE_DYN entry\ninstead to execute the cpuhp cb later, with preemption enabled.\n\nSDEI originally got its own cpuhp slot to allow interacting\nwith perf. It got superseded by pNMI and this early slot is not\nrelevant anymore. [1]\n\nSome SDEI calls (e.g. SDEI_1_0_FN_SDEI_PE_MASK) take actions on the\ncalling CPU. It is checked that preemption is disabled for them.\n_ONLINE cpuhp cb are executed in the 'per CPU hotplug thread'.\nPreemption is enabled in those threads, but their cpumask is limited\nto 1 CPU.\nMove 'WARN_ON_ONCE(preemptible())' statements so that SDEI cpuhp cb\ndon't trigger them.\n\nAlso add a check for the SDEI_1_0_FN_SDEI_PRIVATE_RESET SDEI call\nwhich acts on the calling CPU.\n\n[1]:\nhttps://lore.kernel.org/all/5813b8c5-ae3e-87fd-fccc-94c9cd08816d@arm.com/"
}
],
"lastModified": "2026-06-17T06:46:54.730",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}