CVE-2023-53684xfrm: Zero padding when dumping algos and encap
- 5.5MediumCVSS base score
- 0.15%Exploitation in 30 daysEPSS · top 96% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 13 months later
· 13 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.15% · top 96% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected c7a5899eb26e2a4d516d53f65b6dd67be2228041 – < 0725daaa9a879388ed312110f62dbd5ea2d75f8f
- affected c7a5899eb26e2a4d516d53f65b6dd67be2228041 – < 5218af4ad5d8948faac19f71583bcd786c3852df
- affected c7a5899eb26e2a4d516d53f65b6dd67be2228041 – < 1a351e26cc010d6991fbbd5701ac16581372e26f
- affected c7a5899eb26e2a4d516d53f65b6dd67be2228041 – < 8222d5910dae08213b6d9d4bc9a7f8502855e624
- affected 5.11
- unaffected < 5.11
- unaffected 5.15.106 – ≤ 5.15.*
- unaffected 6.1.23 – ≤ 6.1.*
- unaffected 6.2.10 – ≤ 6.2.*
- unaffected 6.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/0725daaa9a879388ed312110f62dbd5ea2d75f8f (opens in a new tab)
- https://git.kernel.org/stable/c/5218af4ad5d8948faac19f71583bcd786c3852df (opens in a new tab)
- https://git.kernel.org/stable/c/1a351e26cc010d6991fbbd5701ac16581372e26f (opens in a new tab)
- https://git.kernel.org/stable/c/8222d5910dae08213b6d9d4bc9a7f8502855e624 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-31926 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-53684)Record last updated .