Use After Free Affecting torvalds/linux package, versions [6.0,6.1.176)[6.2,6.6.142)[6.7,6.12.92)[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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Test your applications- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20789716
- published11 Oct 2026
- disclosed9 Jun 2026
- creditUnknown
Introduced: 9 Jun 2026
CVE-2026-46323 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.1.176, 6.6.142, 6.12.92, 6.18.34, 7.0.11 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free through the skb_gro_receive function. An attacker can achieve privilege escalation, arbitrary memory disclosure, and system compromise by manipulating zerocopy socket buffers and exploiting improper reference counting during fragment merging. This can result in unauthorized access to kernel memory, modification of critical system files, and potential system crashes. This is only exploitable if the attacker has local access with the ability to inject zerocopy or managed-frags skbs, such as via io_uring SEND_ZC, TUN/TAP, or similar local APIs.
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