Answer in brief
CVE-2022-50206 records a Medium severity (CVSS 5.5) vulnerability in arm64: fix oops in concurrently setting insn_emulation sysctls. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=587064b610c703f259317d00dc37bf6d40f4fc74 <9d5fec6ba2e4117d196a8259ab54615ffe562460 || >=587064b610c703f259317d00dc37bf6d40f4fc74 <b51881b1da57fe9877125dfdd0aac5172958fcfd || >=587064b610c703f259317d00dc37bf6d40f4fc74 <04549063d5701976034d8c2bfda3d3a8cbf0409f || >=587064b610c703f259317d00dc37bf6d40f4fc74 <353b4673d01c512303c45cf2346f630cda73b5c9 || >=587064b610c703f259317d00dc37bf6d40f4fc74 <cc69ef95988b9ef2fc730ec452a7441efb90ef5e || >=587064b610c703f259317d00dc37bf6d40f4fc74 <6a2fd114678d7fc1b5a0f8865ae98f1c17787455 || >=587064b610c703f259317d00dc37bf6d40f4fc74 <07022e07017ee5540f5559b0aeb916e8383c1e1a || >=587064b610c703f259317d00dc37bf6d40f4fc74 <af483947d472eccb79e42059276c4deed76f99a6 | 9d5fec6ba2e4117d196a8259ab54615ffe562460, b51881b1da57fe9877125dfdd0aac5172958fcfd, 04549063d5701976034d8c2bfda3d3a8cbf0409f, 353b4673d01c512303c45cf2346f630cda73b5c9, cc69ef95988b9ef2fc730ec452a7441efb90ef5e, 6a2fd114678d7fc1b5a0f8865ae98f1c17787455, 07022e07017ee5540f5559b0aeb916e8383c1e1a, af483947d472eccb79e42059276c4deed76f99a6 |
| Linux/Linuxgeneric | 3.19 | Not reported |
Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.