CVE-2026-23247None▾ SunlitIn 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. Zhou…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
Linux >= 28ee1b746f493b7c62347d714f58fbf4f70df4f0 < e873e8c16b2fb743a381a9e59c108e63512301ecLinux >= 28ee1b746f493b7c62347d714f58fbf4f70df4f0 < 5da5662181ef8a251e3ba564903002c2e87de452Linux >= 28ee1b746f493b7c62347d714f58fbf4f70df4f0 < eae2f14ab2efccdb7480fae7d42c4b0116ef8805Linux >= 28ee1b746f493b7c62347d714f58fbf4f70df4f0 < 46e5b0d7cf55821527adea471ffe52a5afbd9cafLinux >= 28ee1b746f493b7c62347d714f58fbf4f70df4f0 < 165573e41f2f66ef98940cf65f838b2cb575d9d1Linux 443fac9f2618b93cbc5ab068dc594530236b3a23Linux >= 4.10.14 < 4.11Linux 4.11Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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