In the Linux kernel, the following vulnerability has been resolved:

xfrm_user: fix info leak in build_report()

struct xfrm_user_report is a __u8 proto field followed by a struct
xfrm_selector which means there is three "empty" bytes of padding, but
the padding is never zeroed before copying to userspace. Fix that up by
zeroing the structure before setting individual member variables.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < d27c02eec529f78055a46a5c9e6c62684382b2d8
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 716c546e88cfe49d841658240e10cb57bc50a2cc
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 0616314b3b34f24cbb91da8c6bd8bcdc4c8592f9
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < e0c8542c3d097ed4205ded51868195d5d6ddac62
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < ff5ee507302303b15859753c3e0d67d38fd12c88
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 6c55714c931051cd7f4839c19ce0867179fd22fe
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 0a30dceb0e1f0c480d2482e6d7cebf8aebb6eb72
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < d10119968d0e1f2b669604baf2a8b5fdb72fa6b4
Linux Linux affected
Version Status Constraints
5.10.253 unaffected ≤ 5.10.*
5.15.203 unaffected ≤ 5.15.*
6.1.169 unaffected ≤ 6.1.*
6.6.135 unaffected ≤ 6.6.*
6.12.82 unaffected ≤ 6.12.*
6.18.23 unaffected ≤ 6.18.*
6.19.13 unaffected ≤ 6.19.*
7.0 unaffected ≤ *

No data.

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/0616314b3b34f24cbb91da8c6bd8bcdc4c8592f9 cve-icon cve-icon
https://git.kernel.org/stable/c/0a30dceb0e1f0c480d2482e6d7cebf8aebb6eb72 cve-icon cve-icon
https://git.kernel.org/stable/c/6c55714c931051cd7f4839c19ce0867179fd22fe cve-icon cve-icon
https://git.kernel.org/stable/c/716c546e88cfe49d841658240e10cb57bc50a2cc cve-icon cve-icon
https://git.kernel.org/stable/c/d10119968d0e1f2b669604baf2a8b5fdb72fa6b4 cve-icon cve-icon
https://git.kernel.org/stable/c/d27c02eec529f78055a46a5c9e6c62684382b2d8 cve-icon cve-icon
https://git.kernel.org/stable/c/e0c8542c3d097ed4205ded51868195d5d6ddac62 cve-icon cve-icon
https://git.kernel.org/stable/c/ff5ee507302303b15859753c3e0d67d38fd12c88 cve-icon cve-icon
History

Fri, 24 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: xfrm_user: fix info leak in build_report() struct xfrm_user_report is a __u8 proto field followed by a struct xfrm_selector which means there is three "empty" bytes of padding, but the padding is never zeroed before copying to userspace. Fix that up by zeroing the structure before setting individual member variables.
Title xfrm_user: fix info leak in build_report()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-04-24T14:45:18.669Z

Reserved: 2026-03-09T15:48:24.130Z

Link: CVE-2026-31671

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-24T15:16:46.903

Modified: 2026-04-24T15:16:46.903

Link: CVE-2026-31671

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses

No weakness.