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NVD / CVE Program· CNA Linux

CVE-2022-50094: spmi: trace: fix stack-out-of-bound access in SPMI tracing functions

Noroxi assessment

Priority: Monitor (action score 28/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.26% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 1e0ca3d809c36ad3d1f542917718fc22ec6316e7, 2af28b241eea816e6f7668d1954f15894b45d7e3, 37690cb8662cec672cacda19e6e4fd2ca7b13f0b.

Low priority for now. Upgrade to Linux Linux 1e0ca3d809c36ad3d1f542917718fc22ec6316e7, 2af28b241eea816e6f7668d1954f15894b45d7e3, 37690cb8662cec672cacda19e6e4fd2ca7b13f0b or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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

HighCVSS 7.1 · v3.1—No exploit Fix available
Published
Jun 18, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 18th percentile

Report tools

JSON

Action score

28

Monitor

Low priority for now.

CVSS
28 / 40 · 7.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.3 and later · before 4.9.326
  • linux linux kernel4.10 and later · before 4.14.291
  • linux linux kernel4.15 and later · before 4.19.256
  • linux linux kernel4.20 and later · before 5.4.211
  • linux linux kernel5.5 and later · before 5.10.137
  • linux linux kernel5.11 and later · before 5.15.61
  • linux linux kernel5.16 and later · before 5.18.18
  • linux linux kernel5.19 and later · before 5.19.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.3affected
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before 80f7c93e573ea9f524924bb529c2af8cb28b1c43affected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before dc6033a7761254e5a5ba7df36b64db787a53313caffected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before ac730c72bddc889f5610d51d8a7abf425e08da1aaffected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before 37690cb8662cec672cacda19e6e4fd2ca7b13f0baffected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before dd02510fb43168310abfd0b9ccf49993a722fb91affected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before 1e0ca3d809c36ad3d1f542917718fc22ec6316e7affected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before bcc1b6b1ed3f42ed25858c1f1eb24a2f741db93faffected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before 504090815c1ad3fd3fa34618b54d706727f8911caffected · git
    • a9fce374815d8ab94a3e6259802a944e2cc21408 and later · before 2af28b241eea816e6f7668d1954f15894b45d7e3affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.2-16.0.2-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-50092Jun 18, 2025 · dm thin: fix use-after-free crash in dm_sm_register_threshold_callback
    22Monitor
  • ← EarlierCVE-2022-50093Jun 18, 2025 · iommu/vt-d: avoid invalid memory access via node_online(NUMA_NO_NODE)
    28Monitor
  • Later →CVE-2022-50095Jun 18, 2025 · posix-cpu-timers: Cleanup CPU timers before freeing them during exec
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux1e0ca3d809c36ad3d1f542917718fc22ec6316e7Vendor (CNA)
Linux Linux2af28b241eea816e6f7668d1954f15894b45d7e3Vendor (CNA)
Linux Linux37690cb8662cec672cacda19e6e4fd2ca7b13f0bVendor (CNA)
Linux Linux504090815c1ad3fd3fa34618b54d706727f8911cVendor (CNA)
Linux Linux80f7c93e573ea9f524924bb529c2af8cb28b1c43Vendor (CNA)
Linux Linuxac730c72bddc889f5610d51d8a7abf425e08da1aVendor (CNA)
Linux Linuxbcc1b6b1ed3f42ed25858c1f1eb24a2f741db93fVendor (CNA)
Linux Linuxdc6033a7761254e5a5ba7df36b64db787a53313cVendor (CNA)
Linux Linuxdd02510fb43168310abfd0b9ccf49993a722fb91Vendor (CNA)
debian:linux6.0.2-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records