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Vulnerabilities

Vulnerability · CVE-2023-53684

In the Linux kernel, the following vulnerability has been resolved: xfrm: Zero padding when dumping algos and encap When copying data to user-space we should ensure that only valid

Published Oct 7, 2025 · catalog updated May 11, 2026 · Linux Linux

Check this week

CVE-2023-53684 is not in CISA KEV. FIRST estimates a 15.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
15.00%
Remediation
Version ranges on file
Affected products
vendor Linux Linux c7a5899eb26e2a4d516d53f65b6dd67be2228041 <1a351e26cc010d6991fbbd5701ac16581372e26f

In the Linux kernel, the following vulnerability has been resolved: xfrm: Zero padding when dumping algos and encap When copying data to user-space we should ensure that only valid data is copied over. Padding in structures may be filled with random (possibly sensitve) data and should never be given directly to user-space. This patch fixes the copying of xfrm algorithms and the encap template in xfrm_user so that padding is zeroed.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux c7a5899eb26e2a4d516d53f65b6dd67be2228041 <1a351e26cc010d6991fbbd5701ac16581372e26fc7a5899eb26e2a4d516d53f65b6dd67be2228041 <1a351e26cc010d6991fbbd5701ac16581372e26f

How to fix CVE-2023-53684

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-53684 is not in CISA KEV. FIRST estimates a 15.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Which versions are affected?

Compare what you have installed with Linux Linux c7a5899eb26e2a4d516d53f65b6dd67be2228041 <1a351e26cc010d6991fbbd5701ac16581372e26f c7a5899eb26e2a4d516d53f65b6dd67be2228041 <1a351e26cc010d6991fbbd5701ac16581372e26f. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 15.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 7, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: xfrm: Zero padding when dumping algos and encap When copying data to user-space we should ensure that only valid data is copied over. Padding in structures may be filled with random (possibly sensitve) data and should never be given directly to user-space. This patch fixes the copying of xfrm algorithms and the encap template in x

  2. May 11, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: xfrm: Zero padding when dumping algos and encap When copying data to user-space we should ensure that only valid data is copied over. Padding in structures may be filled with random (possibly sensitve) data and should never be given directly to user-space. This patch fixes the copying of xfrm algorithms and the encap template in x

Sources

  • CVE.orgVulnerability recordCVE-2023-53684

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-31926

    In the Linux kernel, the following vulnerability has been resolved: xfrm: Zero padding when dumping algos and encap When copying data to user-space we should ensure that only valid data is copied over. Padding in structures may be filled with random (possibly sensitve) data and s

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog May 11, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.