# CVE-2022-50094: linux: In the Linux kernel, the following vulnerability has been resolved:  spmi: trace: fix stack-out-of-bound access in SP...

CVE-2022-50094 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50094, released June 18, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-50094
- Priority: High
- CVSS: 7.1 (high)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 18, 2025

## Description

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 ==================================================================

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.0.2-1 | [DEBIAN-CVE-2022-50094](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50094.md) | Jun 18, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.0.2-1 | [DEBIAN-CVE-2022-50094](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50094.md) | Jun 18, 2025 |
| Linux | linux Debian 14 | 6.0.2-1 | [DEBIAN-CVE-2022-50094](https://patchblox.com/security/data/fix/linux/debian-cve-2022-50094.md) | Jun 18, 2025 |

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