CVE-2022-50094

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-50094
In the Linux kernel, the following vulnerability has been resolved: spmi: trace: fix stack-out-of-bound access in SPMI tracing functions trace_spmi_write_begin() and trace_spmi_read_end() both call memcpy() with a length of "len + 1". This leads to one extra byte being read beyond the end of the specified buffer. Fix this out-of-bound memory access by using a length of "len" instead. Here is a KASAN log showing the issue: BUG: KASAN: stack-out-of-bounds in trace_event_raw_event_spmi_read_end+0x1d0/0x234 Read of size 2 at addr ffffffc0265b7540 by task thermal@2.0-ser/1314 ... Call trace: dump_backtrace+0x0/0x3e8 show_stack+0x2c/0x3c dump_stack_lvl+0xdc/0x11c print_address_description+0x74/0x384 kasan_report+0x188/0x268 kasan_check_range+0x270/0x2b0 memcpy+0x90/0xe8 trace_event_raw_event_spmi_read_end+0x1d0/0x234 spmi_read_cmd+0x294/0x3ac spmi_ext_register_readl+0x84/0x9c regmap_spmi_ext_read+0x144/0x1b0 [regmap_spmi] _regmap_raw_read+0x40c/0x754 regmap_raw_read+0x3a0/0x514 regmap_bulk_read+0x418/0x494 adc5_gen3_poll_wait_hs+0xe8/0x1e0 [qcom_spmi_adc5_gen3] ... __arm64_sys_read+0x4c/0x60 invoke_syscall+0x80/0x218 el0_svc_common+0xec/0x1c8 ... addr ffffffc0265b7540 is located in stack of task thermal@2.0-ser/1314 at offset 32 in frame: adc5_gen3_poll_wait_hs+0x0/0x1e0 [qcom_spmi_adc5_gen3] this frame has 1 object: [32, 33) 'status' Memory state around the buggy address: ffffffc0265b7400: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 ffffffc0265b7480: 04 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 >ffffffc0265b7500: 00 00 00 00 f1 f1 f1 f1 01 f3 f3 f3 00 00 00 00 ^ ffffffc0265b7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffc0265b7600: f1 f1 f1 f1 01 f2 07 f2 f2 f2 01 f3 00 00 00 00 ==================================================================

7.1 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1e0ca3d809c36ad3d1f542917718fc22ec6316e7 Patch
https://git.kernel.org/stable/c/2af28b241eea816e6f7668d1954f15894b45d7e3 Patch
https://git.kernel.org/stable/c/37690cb8662cec672cacda19e6e4fd2ca7b13f0b Patch
https://git.kernel.org/stable/c/504090815c1ad3fd3fa34618b54d706727f8911c Patch
https://git.kernel.org/stable/c/80f7c93e573ea9f524924bb529c2af8cb28b1c43 Patch
https://git.kernel.org/stable/c/ac730c72bddc889f5610d51d8a7abf425e08da1a Patch
https://git.kernel.org/stable/c/bcc1b6b1ed3f42ed25858c1f1eb24a2f741db93f Patch
https://git.kernel.org/stable/c/dc6033a7761254e5a5ba7df36b64db787a53313c Patch
https://git.kernel.org/stable/c/dd02510fb43168310abfd0b9ccf49993a722fb91 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

18 Nov 2025, 02:45

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/1e0ca3d809c36ad3d1f542917718fc22ec6316e7 - () https://git.kernel.org/stable/c/1e0ca3d809c36ad3d1f542917718fc22ec6316e7 - Patch
References () https://git.kernel.org/stable/c/2af28b241eea816e6f7668d1954f15894b45d7e3 - () https://git.kernel.org/stable/c/2af28b241eea816e6f7668d1954f15894b45d7e3 - Patch
References () https://git.kernel.org/stable/c/37690cb8662cec672cacda19e6e4fd2ca7b13f0b - () https://git.kernel.org/stable/c/37690cb8662cec672cacda19e6e4fd2ca7b13f0b - Patch
References () https://git.kernel.org/stable/c/504090815c1ad3fd3fa34618b54d706727f8911c - () https://git.kernel.org/stable/c/504090815c1ad3fd3fa34618b54d706727f8911c - Patch
References () https://git.kernel.org/stable/c/80f7c93e573ea9f524924bb529c2af8cb28b1c43 - () https://git.kernel.org/stable/c/80f7c93e573ea9f524924bb529c2af8cb28b1c43 - Patch
References () https://git.kernel.org/stable/c/ac730c72bddc889f5610d51d8a7abf425e08da1a - () https://git.kernel.org/stable/c/ac730c72bddc889f5610d51d8a7abf425e08da1a - Patch
References () https://git.kernel.org/stable/c/bcc1b6b1ed3f42ed25858c1f1eb24a2f741db93f - () https://git.kernel.org/stable/c/bcc1b6b1ed3f42ed25858c1f1eb24a2f741db93f - Patch
References () https://git.kernel.org/stable/c/dc6033a7761254e5a5ba7df36b64db787a53313c - () https://git.kernel.org/stable/c/dc6033a7761254e5a5ba7df36b64db787a53313c - Patch
References () https://git.kernel.org/stable/c/dd02510fb43168310abfd0b9ccf49993a722fb91 - () https://git.kernel.org/stable/c/dd02510fb43168310abfd0b9ccf49993a722fb91 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-125
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.1
First Time Linux
Linux linux Kernel
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spmi: trace: se corrige el acceso fuera de los límites de la pila en las funciones de seguimiento de SPMI. Las funciones trace_spmi_write_begin() y trace_spmi_read_end() llaman a memcpy() con una longitud de "len + 1". Esto provoca la lectura de un byte adicional más allá del final del búfer especificado. Corrija este acceso fuera de los límites de la pila utilizando una longitud de "len". Aquí hay un registro de KASAN que muestra el problema: ERROR: KASAN: pila fuera de los límites en trace_event_raw_event_spmi_read_end+0x1d0/0x234 Lectura de tamaño 2 en la dirección ffffffc0265b7540 por la tarea thermal@2.0-ser/1314 ... Seguimiento de llamadas: dump_backtrace+0x0/0x3e8 show_stack+0x2c/0x3c dump_stack_lvl+0xdc/0x11c print_address_description+0x74/0x384 kasan_report+0x188/0x268 kasan_check_range+0x270/0x2b0 memcpy+0x90/0xe8 trace_event_raw_event_spmi_read_end+0x1d0/0x234 spmi_read_cmd+0x294/0x3ac spmi_ext_register_readl+0x84/0x9c regmap_spmi_ext_read+0x144/0x1b0 [regmap_spmi] _regmap_raw_read+0x40c/0x754 regmap_raw_read+0x3a0/0x514 regmap_bulk_read+0x418/0x494 adc5_gen3_poll_wait_hs+0xe8/0x1e0 [qcom_spmi_adc5_gen3] ... __arm64_sys_read+0x4c/0x60 invoke_syscall+0x80/0x218 el0_svc_common+0xec/0x1c8 ... la dirección ffffffc0265b7540 se encuentra en la pila de tareas thermal@2.0-ser/1314 en el desplazamiento 32 en el marco: adc5_gen3_poll_wait_hs+0x0/0x1e0 [qcom_spmi_adc5_gen3] este marco tiene 1 objeto: [32, 33) 'status' Estado de la memoria alrededor de la dirección con errores: ffffffc0265b7400: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 fffffc0265b7480: 04 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 >fffffc0265b7500: 00 00 00 00 f1 f1 f1 f1 01 f3 f3 f3 00 00 00 00 ^ ffffffc0265b7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffffc0265b7600: f1 f1 f1 f1 01 f2 07 f2 f2 f2 01 f3 00 00 00 00 ====================================================================

18 Jun 2025, 11:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-18 11:15

Updated : 2025-11-18 02:45

NVD link : CVE-2022-50094

Mitre link : CVE-2022-50094

CVE.ORG link : CVE-2022-50094

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-125

Out-of-bounds Read