Use of Insufficiently Random Values Affecting torvalds/linux package, versions [6.10,6.12.114)[6.13,6.18.34)[6.19,7.0.11)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published11 Oct 2026
- disclosed19 Jul 2026
- creditUnknown
Introduced: 19 Jul 2026
CVE-2026-64024 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.12.114, 6.18.34, 7.0.11 or higher.
Overview
Affected versions of this package are vulnerable to Use of Insufficiently Random Values in the handling of TCP connection requests due to improper management of the tcp_tw_isn per-CPU variable. An attacker can predict TCP Initial Sequence Numbers (ISNs), hijack sessions, inject forged segments, or bypass syncookie protections by sending crafted TCP packets to a listening service, exploiting stale ISN values left after certain packet drop paths.
Note: The Linux kernel project assigns a CVE to every bug fix it ships, whether or not the bug has been shown to be exploitable. This advisory was generated from that process and has not been individually assessed for exploitability. See the kernel's CVE process documentation: https://github.com/torvalds/linux/blob/master/Documentation/process/cve.rst