CVE-2024-35989
dmaengine: idxd: Fix oops during rmmod on single-CPU platforms
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: Fix oops during rmmod on single-CPU platforms
During the removal of the idxd driver, registered offline callback is
invoked as part of the clean up process. However, on systems with only
one CPU online, no valid target is available to migrate the
perf context, resulting in a kernel oops:
BUG: unable to handle page fault for address: 000000000002a2b8
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 1470e1067 P4D 0
Oops: 0002 [#1] PREEMPT SMP NOPTI
CPU: 0 PID: 20 Comm: cpuhp/0 Not tainted 6.8.0-rc6-dsa+ #57
Hardware name: Intel Corporation AvenueCity/AvenueCity, BIOS BHSDCRB1.86B.2492.D03.2307181620 07/18/2023
RIP: 0010:mutex_lock+0x2e/0x50
...
Call Trace:
<TASK>
__die+0x24/0x70
page_fault_oops+0x82/0x160
do_user_addr_fault+0x65/0x6b0
__pfx___rdmsr_safe_on_cpu+0x10/0x10
exc_page_fault+0x7d/0x170
asm_exc_page_fault+0x26/0x30
mutex_lock+0x2e/0x50
mutex_lock+0x1e/0x50
perf_pmu_migrate_context+0x87/0x1f0
perf_event_cpu_offline+0x76/0x90 [idxd]
cpuhp_invoke_callback+0xa2/0x4f0
__pfx_perf_event_cpu_offline+0x10/0x10 [idxd]
cpuhp_thread_fun+0x98/0x150
smpboot_thread_fn+0x27/0x260
smpboot_thread_fn+0x1af/0x260
__pfx_smpboot_thread_fn+0x10/0x10
kthread+0x103/0x140
__pfx_kthread+0x10/0x10
ret_from_fork+0x31/0x50
__pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
<TASK>
Fix the issue by preventing the migration of the perf context to an
invalid target.
En el kernel de Linux, se resolvió la siguiente vulnerabilidad: dmaengine: idxd: soluciona errores durante rmmod en plataformas de CPU única Durante la eliminación del controlador idxd, se invoca la devolución de llamada sin conexión registrada como parte del proceso de limpieza. Sin embargo, en sistemas con una sola CPU en línea, no hay ningún destino válido disponible para migrar el contexto de rendimiento, lo que genera un error del kernel: ERROR: no se puede manejar el error de página para la dirección: 000000000002a2b8 #PF: acceso de escritura del supervisor en modo kernel #PF: error_code(0x0002) - página no presente PGD 1470e1067 P4D 0 Ups: 0002 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 20 Comm: cpuhp/0 No contaminado 6.8.0-rc6-dsa+ #57 Nombre de hardware: Intel Corporation AvenueCity/AvenueCity, BIOS BHSDCRB1.86B.2492.D03.2307181620 18/07/2023 RIP: 0010:mutex_lock+0x2e/0x50 ... Seguimiento de llamadas: __die+0x24/0x70 page_fault_oops+0x82/0x160 do_user_addr_fault++0x65 /0x6b0 __pfx___rdmsr_safe_on_cpu+0x10/0x10 exc_page_fault+0x7d/0x170 asm_exc_page_fault+0x26/0x30 mutex_lock+0x2e/0x50 mutex_lock+0x1e/0x50 perf_pmu_migrate_context+0x87/0x1f0 f_event_cpu_offline+0x76/0x90 [idxd] cpuhp_invoke_callback+0xa2/0x4f0 __pfx_perf_event_cpu_offline+0x10/0x10 [idxd] cpuhp_thread_fun+0x98/0x150 smpboot_thread_fn+0x27/0x260 smpboot_thread_fn+0x1af/0x260 __pfx_smpboot_thread_fn+0x10/0x10 kthread+0x103/0x140 __pfx_kthread+0x10/0 x10 ret_from_fork+0x31/0x50 __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1b/0x30 Solucione el problema impidiendo la migración del contexto de rendimiento a un destino no válido.
This is a vulnerability in the Linux kernel's Data Movement Accelerator (DMA) engine, specifically affecting the Intel Data Streaming Accelerator (IDXD) driver. The issue arises during the removal (rmmod) of the idxd driver on systems with only one active CPU. In such scenarios, the driver's cleanup process attempts to migrate performance monitoring unit (PMU) contexts to another CPU. However, with no other CPUs available, this leads to a kernel oops—a serious error causing the system to crash.
CVSS Scores
SSVC
- Decision:Track
Timeline
- 2024-05-17 CVE Reserved
- 2024-05-20 CVE Published
- 2024-05-21 EPSS Updated
- 2024-12-19 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (8)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/81dd4d4d6178306ab31db91bdc7353d485bdafce | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2024-35989 | 2024-10-16 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2281847 | 2024-10-16 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.13 < 5.15.158 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 5.15.158" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.13 < 6.1.90 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.1.90" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.13 < 6.6.30 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.6.30" | en |
Affected
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| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.13 < 6.8.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.8.9" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.13 < 6.9 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.13 < 6.9" | en |
Affected
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