CVE-2026-31471xfrm: iptfs: only publish mode_data after clone setup
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- Aug 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6be02e3e4f376fea468846c8562655ca5ee18204 before 371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1; from 6be02e3e4f376fea468846c8562655ca5ee18204 before 5784a1e2889c9525a8f036cb586930e232170bf7; from 6be02e3e4f376fea468846c8562655ca5ee18204 before d849a2f7309fc0616e79d13b008b0a47e0458b6e | CNA record |
linux linux_kernel linux:linux_kernel | from 6.14 before 6.18.21; from 6.19 before 6.19.11; 7.0; 7.0; 7.0; 7.0; 7.0 | NVD |
References
- https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1patch
- https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7patch
- https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6epatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.