CVE-2023-52577

Service interruption via undersized DCCP error packets

Published Mar 2, 2024 · Updated May 23, 2026

Use of uninitialized memory in Linux kernel DCCP error handling allows local users to interrupt service through crafted ICMP errors. The dccp_v4_err() and dccp_v6_err() paths read dccph_x before ensuring that the embedded packet contains a complete struct dccp_hdr. Low-privileged local access is required, and the documented impact is limited to availability rather than data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of uninitialized memory in Linux kernel DCCP error handling allows local users to interrupt service through crafted ICMP errors. The dccp_v4_err() and dccp_v6_err() paths read dccph_x before ensuring that the embedded packet contains a complete struct dccp_hdr. Low-privileged local access is required, and the documented impact is limited to availability rather than data disclosure or modification.

The record

CVE
CVE-2023-52577
Published
Mar 2, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=177212bf6dc1ff2d13d0409cddc5c9e81feec63d <62c218124fe58372e0e1f60d5b634d21c264b337
  2. Affected versionversion=3533e10272555c422a7d51ebc0ce8c483429f7f2 <4600beae416d754a3cedbb1ecea8181ec05073b6
  3. Affected versionversion=4.14.326 <4.14.327
  4. Affected versionversion=4.19.295 <4.19.296
  5. Affected versionversion=4b8a938e329ae4eb54b73b0c87b5170607b038a8 <60d73c62e3e4464f375758b6f2459c13d46465b6
  6. Affected versionversion=5.10.195 <5.10.198
  7. Affected versionversion=5.15.132 <5.15.134
  8. Affected versionversion=5.4.257 <5.4.258
  9. Affected versionversion=6.1.53 <6.1.56
  10. Affected versionversion=6.4.16 <6.5
  11. Affected versionversion=6.5.3 <6.5.6
  12. Affected versionversion=6ecf09699eb1554299aa1e7fd13e9e80f656c2f9 <26df9ab5de308caa1503d937533c56c35793018d
  13. Affected versionversion=7a7dd70cb954d3efa706a429687ded88c02496fa <a6f4d582e25d512c9b492670b6608436694357b3
  14. Affected versionversion=977ad86c2a1bcaf58f01ab98df5cc145083c489c <6af289746a636f71f4c0535a9801774118486c7a
  15. Affected versionversion=d8171411a661253e6271fa10b65b46daf1b6471c
  16. Affected versionversion=ec620c34f5fa5d055f9f6136a387755db6157712 <1512d8f45d3c5d0b5baa00bd8e600492fa569f40
  17. Affected versionversion=f8a7f10a1dccf9868ff09342a73dce27501b86df <73be49248a04746096339a48a33fa2f03bd85969

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=177212bf6dc1ff2d13d0409cddc5c9e81feec63d <62c218124fe58372e0e1f60d5b634d21c264b337; version=3533e10272555c422a7d51ebc0ce8c483429f7f2 <4600beae416d754a3cedbb1ecea8181ec05073b6; version=4.14.326 <4.14.327; version=4.19.295 <4.19.296; version=4b8a938e329ae4eb54b73b0c87b5170607b038a8 <60d73c62e3e4464f375758b6f2459c13d46465b6; version=5.10.195 <5.10.198; version=5.15.132 <5.15.134; version=5.4.257 <5.4.258; version=6.1.53 <6.1.56; version=6.4.16 <6.5; version=6.5.3 <6.5.6; version=6ecf09699eb1554299aa1e7fd13e9e80f656c2f9 <26df9ab5de308caa1503d937533c56c35793018d; version=7a7dd70cb954d3efa706a429687ded88c02496fa <a6f4d582e25d512c9b492670b6608436694357b3; version=977ad86c2a1bcaf58f01ab98df5cc145083c489c <6af289746a636f71f4c0535a9801774118486c7a; version=d8171411a661253e6271fa10b65b46daf1b6471c; version=ec620c34f5fa5d055f9f6136a387755db6157712 <1512d8f45d3c5d0b5baa00bd8e600492fa569f40; version=f8a7f10a1dccf9868ff09342a73dce27501b86df <73be49248a04746096339a48a33fa2f03bd85969

Published CVSS scores

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

CWE-908Use of Uninitialized Resource

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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