CVE-2022-48651

Local service interruption via stale MAC header

Published Apr 28, 2024 · Updated May 11, 2026

Out-of-bounds access in Linux kernel ipvlan allows local users to interrupt service through crafted AF_PACKET traffic. packet_direct_xmit() leaves skb->mac_header at 65535, and ipvlan_xmit_mode_l2() passes that stale offset to eth_hdr(), which accesses beyond the socket buffer. The trigger requires CAP_NET_RAW, an ipvlan transmit path, and PACKET_QDISC_BYPASS; the reported result is a KASAN-detected kernel memory access.

CVSS severity7.7
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in Linux kernel ipvlan allows local users to interrupt service through crafted AF_PACKET traffic. packet_direct_xmit() leaves skb->mac_header at 65535, and ipvlan_xmit_mode_l2() passes that stale offset to eth_hdr(), which accesses beyond the socket buffer. The trigger requires CAP_NET_RAW, an ipvlan transmit path, and PACKET_QDISC_BYPASS; the reported result is a KASAN-detected kernel memory access.

The record

CVE
CVE-2022-48651
Published
Apr 28, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 2024CVE 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=2ad7bf3638411cb547f2823df08166c13ab04269 <25efdbe5fe542c3063d1948cc4e98abcb57621ca
  2. Affected versionversion=2ad7bf3638411cb547f2823df08166c13ab04269 <346e94aa4a99378592c46d6a34c72703a32bd5be
  3. Affected versionversion=2ad7bf3638411cb547f2823df08166c13ab04269 <81225b2ea161af48e093f58e8dfee6d705b16af4
  4. Affected versionversion=2ad7bf3638411cb547f2823df08166c13ab04269 <8d06006c7eb75587d986da46c48ba9274f94e8e7
  5. Affected versionversion=2ad7bf3638411cb547f2823df08166c13ab04269 <ab4a733874ead120691e8038272d22f8444d3638
  6. Affected versionversion=2ad7bf3638411cb547f2823df08166c13ab04269 <b583e6b25bf9321c91154f6c78d2173ef12c4241
  7. Affected versionversion=2ad7bf3638411cb547f2823df08166c13ab04269 <bffcdade259c05ab3436b5fab711612093c275ef
  8. Affected versionversion=2ad7bf3638411cb547f2823df08166c13ab04269 <e2b46cd5796f083e452fbc624f65b80328b0c1a4
  9. Affected versionversion=3.19

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2ad7bf3638411cb547f2823df08166c13ab04269 <25efdbe5fe542c3063d1948cc4e98abcb57621ca; version=2ad7bf3638411cb547f2823df08166c13ab04269 <346e94aa4a99378592c46d6a34c72703a32bd5be; version=2ad7bf3638411cb547f2823df08166c13ab04269 <81225b2ea161af48e093f58e8dfee6d705b16af4; version=2ad7bf3638411cb547f2823df08166c13ab04269 <8d06006c7eb75587d986da46c48ba9274f94e8e7; version=2ad7bf3638411cb547f2823df08166c13ab04269 <ab4a733874ead120691e8038272d22f8444d3638; version=2ad7bf3638411cb547f2823df08166c13ab04269 <b583e6b25bf9321c91154f6c78d2173ef12c4241; version=2ad7bf3638411cb547f2823df08166c13ab04269 <bffcdade259c05ab3436b5fab711612093c275ef; version=2ad7bf3638411cb547f2823df08166c13ab04269 <e2b46cd5796f083e452fbc624f65b80328b0c1a4; version=3.19
The Linux Kernel Organization · Linux Kernelversion=2ad7bf363841; version=3.19

Published CVSS scores

7.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
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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