Remote Code Execution (RCE) Affecting torvalds/linux package, versions [3.8,6.18.39)[6.19,7.1.3)
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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Start learning- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20790058
- published11 Oct 2026
- disclosed19 Jul 2026
- creditUnknown
Introduced: 19 Jul 2026
CVE-2026-63819 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.18.39, 7.1.3 or higher.
Overview
Affected versions of this package are vulnerable to Remote Code Execution (RCE) in the f2fs_do_truncate_blocks process. An attacker can execute arbitrary code or cause a kernel panic by mounting or accessing a crafted F2FS filesystem image containing a corrupted inode with a direct node that has manipulated footer values. This manipulation leads to node-type confusion, enabling out-of-bounds reads and writes within kernel memory, potentially leaking metadata or corrupting kernel structures.
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