CVE-2026-63912
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c075c3ea031757f8ea2d34567565b61a868c08d5 < 566295735530ee513326049b0540f32ec050bf2e | affected |
| Linux | Linux | a583f2f3c8788bffd7fd7baeb76bd6d80543d7ea < 5d7ab86e2b6bc23054616bf6ac562013bf60af8c | affected |
| Linux | Linux | 5bd8baab087dff657e05387aee802e70304cc813 < 36519e3d941fc99d3b52c134dbaf311f987a4708 | affected |
| Linux | Linux | 5bd8baab087dff657e05387aee802e70304cc813 < 322e48187e0245ab2fff6fec2220b0cae677dbec | affected |
| Linux | Linux | 5bd8baab087dff657e05387aee802e70304cc813 < b84091ceddc9f133229dceab3ccc930bf27f9cba | affected |
| Linux | Linux | 5bd8baab087dff657e05387aee802e70304cc813 < c093468aea8277f77272a4f199b2e15e19cabb59 | affected |
| Linux | Linux | 5bd8baab087dff657e05387aee802e70304cc813 < 65f3b3fc2347b89fe21db1e92c7681368415f095 | affected |
| Linux | Linux | 5bd8baab087dff657e05387aee802e70304cc813 < dfa0d7b0ff1eb6b2c416b8fdb9b4f2cefba57a40 | affected |
| Linux | Linux | 2c66b0c95bb0aa7652ba1eba293d0d5993b35a38 | affected |
| Linux | Linux | ef6f83df1209a7d9bd1c605a62457d4c00f9179e | affected |
| Linux | Linux | 3defefd22ad5fbbe639b6157fb7e6311b2bf333d | affected |
| Linux | Linux | b657030870bb5351c5b1e84d4e9f186da6ca0496 | affected |
| Linux | Linux | 5.10.113 < 5.10.259 | affected |
| Linux | Linux | 5.15.36 < 5.15.210 | affected |
| Linux | Linux | 4.14.288 < 4.15 | affected |
| Linux | Linux | 4.19.252 < 4.20 | affected |
| Linux | Linux | 5.4.205 < 5.5 | affected |
| Linux | Linux | 5.17.5 < 5.18 | affected |
| Linux | Linux | 5.18 | affected |
| Linux | Linux | 0 < 5.18 | unaffected |
| Linux | Linux | 5.10.259 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.210 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.176 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.143 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.93 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.35 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.12 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/566295735530ee513326049b0540f32ec050bf2e
- https://git.kernel.org/stable/c/5d7ab86e2b6bc23054616bf6ac562013bf60af8c
- https://git.kernel.org/stable/c/36519e3d941fc99d3b52c134dbaf311f987a4708
- https://git.kernel.org/stable/c/322e48187e0245ab2fff6fec2220b0cae677dbec
- https://git.kernel.org/stable/c/b84091ceddc9f133229dceab3ccc930bf27f9cba
- https://git.kernel.org/stable/c/c093468aea8277f77272a4f199b2e15e19cabb59
- https://git.kernel.org/stable/c/65f3b3fc2347b89fe21db1e92c7681368415f095
- https://git.kernel.org/stable/c/dfa0d7b0ff1eb6b2c416b8fdb9b4f2cefba57a40
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