CVE-2023-52887Public exploitNetwork attack vector

Kernel crash via tightly spaced J1939 RTS frames

Published Jul 29, 2024 · Updated Aug 5, 2026

Denial of service in the Linux kernel J1939 transport allows remote attackers to crash the kernel via tightly spaced RTS frames. In xtp_rx_rts_session_new, duplicate RTS handling delays release of a problematic session until j1939_xtp_rx_rts finishes, leaving a warning path reachable. A J1939 socket must be bound on the target; repeated crafted RTS and abort frames can panic the kernel or interrupt CAN service.

CVSS severity7.5
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel J1939 transport allows remote attackers to crash the kernel via tightly spaced RTS frames. In xtp_rx_rts_session_new, duplicate RTS handling delays release of a problematic session until j1939_xtp_rx_rts finishes, leaving a warning path reachable. A J1939 socket must be bound on the target; repeated crafted RTS and abort frames can panic the kernel or interrupt CAN service.

The record

CVE
CVE-2023-52887
Published
Jul 29, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.4
  2. Affected versionversion=9d71dd0c70099914fcd063135da3c580865e924c <0bc0a7416ea73f79f915c9a05ac0858dff65cfed
  3. Affected versionversion=9d71dd0c70099914fcd063135da3c580865e924c <1762ca80c2b72dd1b5821c5e347713ae696276ea
  4. Affected versionversion=9d71dd0c70099914fcd063135da3c580865e924c <177e33b655d35d72866b50aec84307119dc5f3d4
  5. Affected versionversion=9d71dd0c70099914fcd063135da3c580865e924c <26b18dd30e63d4fd777be429148e8e4ed66f60b2
  6. Affected versionversion=9d71dd0c70099914fcd063135da3c580865e924c <d3e2904f71ea0fe7eaff1d68a2b0363c888ea0fb
  7. Affected versionversion=9d71dd0c70099914fcd063135da3c580865e924c <ed581989d7ea9df6f8646beba2341e32cd49a1f9
  8. Affected versionversion=9d71dd0c70099914fcd063135da3c580865e924c <f6c839e717901dbd6b1c1ca807b6210222eb70f6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=9d71dd0c70099914fcd063135da3c580865e924c <0bc0a7416ea73f79f915c9a05ac0858dff65cfed; version=9d71dd0c70099914fcd063135da3c580865e924c <1762ca80c2b72dd1b5821c5e347713ae696276ea; version=9d71dd0c70099914fcd063135da3c580865e924c <177e33b655d35d72866b50aec84307119dc5f3d4; version=9d71dd0c70099914fcd063135da3c580865e924c <26b18dd30e63d4fd777be429148e8e4ed66f60b2; version=9d71dd0c70099914fcd063135da3c580865e924c <d3e2904f71ea0fe7eaff1d68a2b0363c888ea0fb; version=9d71dd0c70099914fcd063135da3c580865e924c <ed581989d7ea9df6f8646beba2341e32cd49a1f9; version=9d71dd0c70099914fcd063135da3c580865e924c <f6c839e717901dbd6b1c1ca807b6210222eb70f6

Published CVSS scores

7.5Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

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