← CVE Intelligence

CVE-2026-31471

xfrm: iptfs: only publish mode_data after clone setup PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 6be02e3e4f376fea468846c8562655ca5ee18204 before 371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1; affected 6be02e3e4f376fea468846c8562655ca5ee18204 before 5784a1e2889c9525a8f036cb586930e232170bf7; affected 6be02e3e4f376fea468846c8562655ca5ee18204 before d849a2f7309fc0616e79d13b008b0a47e0458b6e
Linux / Linuxaffected 6.14; unaffected 0 before 6.14; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through *

CWE

No CWE identifiers supplied.

References