CVE-2022-0322

Local system crash via SCTP padding miscalculation

Published Mar 25, 2022 · Updated Aug 2, 2024

Incorrect numeric conversion in Linux Kernel before 5.15-rc6 allows local users to crash the system through an SCTP stream reset request. sctp_make_strreset_req allocates a reconfiguration chunk after padding the combined input and output lengths, although sctp_addto_chunk pads each segment separately, so subsequent writes can exceed the allocation and hit BUG_ON. A low-privileged local process able to configure an SCTP socket can trigger a kernel panic, interrupting the entire host.

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

What happened

Incorrect numeric conversion in Linux Kernel before 5.15-rc6 allows local users to crash the system through an SCTP stream reset request. sctp_make_strreset_req allocates a reconfiguration chunk after padding the combined input and output lengths, although sctp_addto_chunk pads each segment separately, so subsequent writes can exceed the allocation and hit BUG_ON. A low-privileged local process able to configure an SCTP socket can trigger a kernel panic, interrupting the entire host.

The record

CVE
CVE-2022-0322
Published
Mar 25, 2022
Updated
Aug 2, 2024
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-681, CWE-704, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=kernel 5.15 rc6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=kernel 5.15 rc6

Published CVSS scores

2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P
5.5Canonical Ubuntu SecurityCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-681Incorrect Conversion between Numeric Types
CWE-704Incorrect Type Conversion or Cast
T1499Endpoint Denial of Service

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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