CVE-2022-48830

Kernel crash via unsynchronized ISO-TP receive state

Published Jul 16, 2024 · Updated Aug 5, 2026

A receive race in the Linux kernel allows attackers to crash the system by sending concurrent CAN ISO-TP first and consecutive frames. In isotp_rcv(), isotp_rcv_ff() changes so->rx.len while isotp_rcv_cf() allocates and extends an skb from inconsistent length values, triggering skb_over_panic(). A bound ISO-TP socket, an active CAN interface, and access to the same CAN bus are required; the disclosed outcome is a kernel panic.

CVSS severity8.8
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A receive race in the Linux kernel allows attackers to crash the system by sending concurrent CAN ISO-TP first and consecutive frames. In isotp_rcv(), isotp_rcv_ff() changes so->rx.len while isotp_rcv_cf() allocates and extends an skb from inconsistent length values, triggering skb_over_panic(). A bound ISO-TP socket, an active CAN interface, and access to the same CAN bus are required; the disclosed outcome is a kernel panic.

The record

CVE
CVE-2022-48830
Published
Jul 16, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=5.10
  2. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <5b068f33bc8acfcfd5ea7992a2dafb30d89bad30
  3. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7b53d2204ce79b27a878074a77d64f40ec21dbca
  4. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7c759040c1dd03954f650f147ae7175476d51314
  5. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <5b068f33bc8acfcfd5ea7992a2dafb30d89bad30; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7b53d2204ce79b27a878074a77d64f40ec21dbca; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7c759040c1dd03954f650f147ae7175476d51314; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <f90cc68f9f4b5d8585ad5d0a206a9d37ac299ef3

Published CVSS scores

4.7CanonicalCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
8.8Linux CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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