CVE-2026-63912

CVE CVE-2026-63912EUVD EUVD-2026-45685Published 2026-07-19T14:55:17.000ZLast changed 2026-08-05T12:37:06.000ZCVSS 9.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: restore combined single-frag length gate The ESP out-of-place fast path appends the trailer in esp_output_head() before esp_output_tail() allocates the destination page frag. The head-side gate currently checks skb->data_len and tailen separately, but the tail code allocates a single destination frag from the combined post-trailer skb->data_len. Reject the page-frag fast path when the combined aligned length exceeds a page. Otherwise skb_page_frag_refill() may fall back to a single page while the destination sg still spans the combined skb->data_len. Restore this combined-length page gate for both IPv4 and IPv6.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.1; patch: 6.18.35; patch: 6.6.143; c075c3ea031757f8ea2d34567565b61a868c08d5 <566295735530ee513326049b0540f32ec050bf2e; 5.15.36 <5.15.210; 4.14.288 <4.15; 5bd8baab087dff657e05387aee802e70304cc813 <dfa0d7b0ff1eb6b2c416b8fdb9b4f2cefba57a40; patch: 5.15.210; 5bd8baab087dff657e05387aee802e70304cc813 <c093468aea8277f77272a4f199b2e15e19cabb59; patch: 0; b657030870bb5351c5b1e84d4e9f186da6ca0496; patch: 6.12.93; 5bd8baab087dff657e05387aee802e70304cc813 <36519e3d941fc99d3b52c134dbaf311f987a4708; 4.19.252 <4.20; patch: 5.10.259; a583f2f3c8788bffd7fd7baeb76bd6d80543d7ea <5d7ab86e2b6bc23054616bf6ac562013bf60af8c; 5bd8baab087dff657e05387aee802e70304cc813 <65f3b3fc2347b89fe21db1e92c7681368415f095; 5.17.5 <5.18; 3defefd22ad5fbbe639b6157fb7e6311b2bf333d; 5.4.205 <5.5; 5bd8baab087dff657e05387aee802e70304cc813 <b84091ceddc9f133229dceab3ccc930bf27f9cba; 5bd8baab087dff657e05387aee802e70304cc813 <322e48187e0245ab2fff6fec2220b0cae677dbec; 5.18; patch: 7.0.12; patch: 6.1.176; ef6f83df1209a7d9bd1c605a62457d4c00f9179e; 5.10.113 <5.10.259; 2c66b0c95bb0aa7652ba1eba293d0d5993b35a38

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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