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.
References
Configurations
Configuration 1 (hide)
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History
21 May 2026, 17:35
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:4.11:rc8:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:4.11:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:4.10.14:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:4.11:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:4.11:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
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| CWE | NVD-CWE-noinfo | |
| Summary |
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| First Time |
Linux linux Kernel
Linux |
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| References | () https://git.kernel.org/stable/c/165573e41f2f66ef98940cf65f838b2cb575d9d1 - Patch | |
| References | () https://git.kernel.org/stable/c/46e5b0d7cf55821527adea471ffe52a5afbd9caf - Patch | |
| References | () https://git.kernel.org/stable/c/eae2f14ab2efccdb7480fae7d42c4b0116ef8805 - Patch | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
18 Mar 2026, 11:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-18 11:16
Updated : 2026-05-21 17:35
NVD link : CVE-2026-23247
Mitre link : CVE-2026-23247
CVE.ORG link : CVE-2026-23247
JSON object : View
Products Affected
linux
- linux_kernel
CWE
