CVE-2022-50206
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
arm64: fix oops in concurrently setting insn_emulation sysctls
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | 9d5fec6ba2e4117d196a8259ab54615ffe562460 | Unavailable | None listed |
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | b51881b1da57fe9877125dfdd0aac5172958fcfd | Unavailable | None listed |
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | 04549063d5701976034d8c2bfda3d3a8cbf0409f | Unavailable | None listed |
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | 353b4673d01c512303c45cf2346f630cda73b5c9 | Unavailable | None listed |
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | cc69ef95988b9ef2fc730ec452a7441efb90ef5e | Unavailable | None listed |
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | 6a2fd114678d7fc1b5a0f8865ae98f1c17787455 | Unavailable | None listed |
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | 07022e07017ee5540f5559b0aeb916e8383c1e1a | Unavailable | None listed |
| 587064b610c703f259317d00dc37bf6d40f4fc74 | affected | git | af483947d472eccb79e42059276c4deed76f99a6 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3.19 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.19 | Unavailable | None listed |
| 4.14.291 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.256 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.211 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.137 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.61 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.18.18 | unaffected | semver | Unavailable | 5.18.* | None listed |
| 5.19.2 | unaffected | semver | Unavailable | 5.19.* | None listed |
| 6.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |