CVE-2022-50096

Kernel panic via stale kprobe status flag

Published Jun 18, 2025 · Updated May 11, 2026

A denial-of-service flaw in affected Linux kernel releases from 5.13 before 6.0 allows local users to trigger a kernel panic. In arch/x86/kernel/kprobes/core.c, single-stepping without a post-handler leaves the control block short of KPROBE_HIT_SSDONE, so kprobe_int3_handler() misclassifies a following INT3. Low-privileged local access and the timing of another INT3 user immediately after the kprobe are required; the bounded consequence is a host service interrupt through kernel panic.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A denial-of-service flaw in affected Linux kernel releases from 5.13 before 6.0 allows local users to trigger a kernel panic. In arch/x86/kernel/kprobes/core.c, single-stepping without a post-handler leaves the control block short of KPROBE_HIT_SSDONE, so kprobe_int3_handler() misclassifies a following INT3. Low-privileged local access and the timing of another INT3 user immediately after the kprobe are required; the bounded consequence is a host service interrupt through kernel panic.

The record

CVE
CVE-2022-50096
Published
Jun 18, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.13
  2. Affected versionversion=6256e668b7af9d81472e03c6a171630c08f8858a <1cbf3882cb372bbe752efd7c3045ca1c9ab40ac6
  3. Affected versionversion=6256e668b7af9d81472e03c6a171630c08f8858a <663cdda2716b70751df9c7e60b81bd0850fdfe3c
  4. Affected versionversion=6256e668b7af9d81472e03c6a171630c08f8858a <b9c3401f7cac6ae291a16784dadcd1bf116218fe
  5. Affected versionversion=6256e668b7af9d81472e03c6a171630c08f8858a <dec8784c9088b131a1523f582c2194cfc8107dc0
  6. Affected versionversion=ba7d1dae9fe866abe74bb1e849fb85983b7c4c37 <edc2ac7c7265b33660fa0190898966b49966b855

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.13; version=6256e668b7af9d81472e03c6a171630c08f8858a <1cbf3882cb372bbe752efd7c3045ca1c9ab40ac6; version=6256e668b7af9d81472e03c6a171630c08f8858a <663cdda2716b70751df9c7e60b81bd0850fdfe3c; version=6256e668b7af9d81472e03c6a171630c08f8858a <b9c3401f7cac6ae291a16784dadcd1bf116218fe; version=6256e668b7af9d81472e03c6a171630c08f8858a <dec8784c9088b131a1523f582c2194cfc8107dc0; version=ba7d1dae9fe866abe74bb1e849fb85983b7c4c37 <edc2ac7c7265b33660fa0190898966b49966b855

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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