CVE-2026-80637
High
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: fix unaligned memory access in timestamp adjustment Use get_unaligned_be32() and put_unaligned_be32() to safely read and write the timestamp fields. This prevents performance degradation due to unaligned memory access or even a crash on strict alignment architectures. This follows the implementation of timestamp parsing in the networking stack at tcp_parse_options() and synproxy_parse_options().
SeverityHigh
CVSS7.5
Exploit probability—
Product
Linux
PublishedAug 28, 2026
First seenAug 28, 2026
How to fix
Update
- Linux Linuxb30a2d56ee47282f6a46cb2f50e315b2414851fe, 95cda0446f51077c343fdd8264be2737eb25a6c3, 2b8e7aaa38002d8ee2f48d87b1f392eadd8e98c4, 5c9c67cf7a3d16051dfb90e98836f530964dfb8e, ea3d2caa5bfacf5db5c1cad521ca5d9144edd9a7, 992c20bc8a4aba220c8b95b467d049289778dad6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 48b1de4c110a7afa4b85862f6c75af817db26fad ≤ v < b30a2d56ee47282f6a46cb2f50e315b2414851fe, 48b1de4c110a7afa4b85862f6c75af817db26fad ≤ v < 95cda0446f51077c343fdd8264be2737eb25a6c3, 48b1de4c110a7afa4b85862f6c75af817db26fad ≤ v < 2b8e7aaa38002d8ee2f48d87b1f392eadd8e98c4, 48b1de4c110a7afa4b85862f6c75af817db26fad ≤ v < 5c9c67cf7a3d16051dfb90e98836f530964dfb8e, 48b1de4c110a7afa4b85862f6c75af817db26fad ≤ v < ea3d2caa5bfacf5db5c1cad521ca5d9144edd9a7, 48b1de4c110a7afa4b85862f6c75af817db26fad ≤ v < 992c20bc8a4aba220c8b95b467d049289778dad6, 3.12 | b30a2d56ee47282f6a46cb2f50e315b2414851fe, 95cda0446f51077c343fdd8264be2737eb25a6c3, 2b8e7aaa38002d8ee2f48d87b1f392eadd8e98c4, 5c9c67cf7a3d16051dfb90e98836f530964dfb8e, ea3d2caa5bfacf5db5c1cad521ca5d9144edd9a7, 992c20bc8a4aba220c8b95b467d049289778dad6 |
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