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Description

In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: only publish mode_data after clone setup iptfs_clone_state() stores x->mode_data before allocating the reorder window. If that allocation fails, the code frees the cloned state and returns -ENOMEM, leaving x->mode_data pointing at freed memory. The xfrm clone unwind later runs destroy_state() through x->mode_data, so the failed clone path tears down IPTFS state that clone_state() already freed. Keep the cloned IPTFS state private until all allocations succeed so failed clones leave x->mode_data unset. The destroy path already handles a NULL mode_data pointer.

PUBLISHED Reserved 2026-03-09 | Published 2026-04-22 | Updated 2026-05-11 | Assigner Linux




HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Product status

Default status
unaffected

6be02e3e4f376fea468846c8562655ca5ee18204 (git) before 371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1
affected

6be02e3e4f376fea468846c8562655ca5ee18204 (git) before 5784a1e2889c9525a8f036cb586930e232170bf7
affected

6be02e3e4f376fea468846c8562655ca5ee18204 (git) before d849a2f7309fc0616e79d13b008b0a47e0458b6e
affected

Default status
affected

6.14
affected

Any version before 6.14
unaffected

6.18.21 (semver)
unaffected

6.19.11 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1

git.kernel.org/...c/5784a1e2889c9525a8f036cb586930e232170bf7

git.kernel.org/...c/d849a2f7309fc0616e79d13b008b0a47e0458b6e

cve.org (CVE-2026-31471)

nvd.nist.gov (CVE-2026-31471)

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