Executive Summary



This vulnerability is currently undergoing analysis and not all information is available. Please check back soon to view the completed vulnerability summary
Informations
Name CVE-2022-50206 First vendor Publication 2025-06-18
Vendor Cve Last vendor Modification 2025-06-18

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

In the Linux kernel, the following vulnerability has been resolved:

arm64: fix oops in concurrently setting insn_emulation sysctls

emulation_proc_handler() changes table->data for proc_dointvec_minmax and can generate the following Oops if called concurrently with itself:

| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
| Internal error: Oops: 96000006 [#1] SMP
| Call trace:
| update_insn_emulation_mode+0xc0/0x148
| emulation_proc_handler+0x64/0xb8
| proc_sys_call_handler+0x9c/0xf8
| proc_sys_write+0x18/0x20
| __vfs_write+0x20/0x48
| vfs_write+0xe4/0x1d0
| ksys_write+0x70/0xf8
| __arm64_sys_write+0x20/0x28
| el0_svc_common.constprop.0+0x7c/0x1c0
| el0_svc_handler+0x2c/0xa0
| el0_svc+0x8/0x200

To fix this issue, keep the table->data as &insn->current_mode and use container_of() to retrieve the insn pointer. Another mutex is used to protect against the current_mode update but not for retrieving insn_emulation as table->data is no longer changing.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-50206

Sources (Detail)

https://git.kernel.org/stable/c/04549063d5701976034d8c2bfda3d3a8cbf0409f
https://git.kernel.org/stable/c/07022e07017ee5540f5559b0aeb916e8383c1e1a
https://git.kernel.org/stable/c/353b4673d01c512303c45cf2346f630cda73b5c9
https://git.kernel.org/stable/c/6a2fd114678d7fc1b5a0f8865ae98f1c17787455
https://git.kernel.org/stable/c/9d5fec6ba2e4117d196a8259ab54615ffe562460
https://git.kernel.org/stable/c/af483947d472eccb79e42059276c4deed76f99a6
https://git.kernel.org/stable/c/b51881b1da57fe9877125dfdd0aac5172958fcfd
https://git.kernel.org/stable/c/cc69ef95988b9ef2fc730ec452a7441efb90ef5e
Source Url

Alert History

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0
Date Informations
2025-06-18 17:20:33
  • First insertion