CVE-2026-23247: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: tcp: secure_seq: add back ports to TS offset This reverts 28ee1b746f49 ("secure_seq: downgrade to per-host timestamp offsets") tcp_tw_recycle went away in 2017. Zhouyan Deng reported off-path TCP source port leakage via SYN cookie side-channel that can be fixed in multiple ways. One of them is to bring back TCP ports in TS offset randomization. As a bonus, we perform a single siphash() computation to provide both an ISN and a TS offset.

Засегнати продукти

• Linux Linux: 28ee1b746f493b7c62347d714f58fbf4f70df4f0 преди 025f532d8c5cfac77845e50daab7f478b360f2ac; 28ee1b746f493b7c62347d714f58fbf4f70df4f0 преди e873e8c16b2fb743a381a9e59c108e63512301ec; 28ee1b746f493b7c62347d714f58fbf4f70df4f0 преди 5da5662181ef8a251e3ba564903002c2e87de452; 28ee1b746f493b7c62347d714f58fbf4f70df4f0 преди eae2f14ab2efccdb7480fae7d42c4b0116ef8805; 28ee1b746f493b7c62347d714f58fbf4f70df4f0 преди 46e5b0d7cf55821527adea471ffe52a5afbd9caf; 28ee1b746f493b7c62347d714f58fbf4f70df4f0 преди 165573e41f2f66ef98940cf65f838b2cb575d9d1; 443fac9f2618b93cbc5ab068dc594530236b3a23; 4.10.14 преди 4.11
• Linux Linux: 4.11; преди 4.11; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.94 до 6.12.*; 6.18.17 до 6.18.*; 6.19.7 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-23247
• https://nvd.nist.gov/vuln/detail/CVE-2026-23247
• https://git.kernel.org/stable/c/025f532d8c5cfac77845e50daab7f478b360f2ac
• https://git.kernel.org/stable/c/e873e8c16b2fb743a381a9e59c108e63512301ec
• https://git.kernel.org/stable/c/5da5662181ef8a251e3ba564903002c2e87de452
• https://git.kernel.org/stable/c/eae2f14ab2efccdb7480fae7d42c4b0116ef8805
• https://git.kernel.org/stable/c/46e5b0d7cf55821527adea471ffe52a5afbd9caf
• https://git.kernel.org/stable/c/165573e41f2f66ef98940cf65f838b2cb575d9d1