Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags() iptfs_consume_frags() transfers paged fragments from one socket buffer to another but fails to propagate the SKBFL_SHARED_FRAG flag. This is the same class of bug that was fixed in skb_try_coalesce() for CVE-2026-46300: when fragments backed by read-only page-cache pages are merged, the marker indicating their shared nature must be preserved so that ESP can decide correctly whether in-place encryption is safe. Apply the same two-line fix used in skb_try_coalesce() to iptfs_consume_frags().
Product status
b96ba312e21c9b7ac1526829b9640ddc06695c0b (git) before dd66f7f6e360ee82cd905517726f8e9091265de5
b96ba312e21c9b7ac1526829b9640ddc06695c0b (git) before c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c
b96ba312e21c9b7ac1526829b9640ddc06695c0b (git) before e9096a5a170e7ecd6467bc2e08668ec39897cda7
6.14
Any version before 6.14
6.18.36 (semver)
7.0.13 (semver)
7.1 (original_commit_for_fix)
References
git.kernel.org/...c/dd66f7f6e360ee82cd905517726f8e9091265de5
git.kernel.org/...c/c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c
git.kernel.org/...c/e9096a5a170e7ecd6467bc2e08668ec39897cda7