Buffer Overflow Affecting torvalds/linux package, versions [6.6.32,6.6.160)[6.8,7.2.4)
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-20821346
- published11 Oct 2026
- disclosed11 Sept 2026
- creditUnknown
Introduced: 11 Sep 2026
CVE-2026-89632 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.6.160, 7.2.4 or higher.
Overview
Affected versions of this package are vulnerable to Buffer Overflow in the reparse_buf_ptr function. An attacker can cause out-of-bounds memory access by sending a crafted SMB response with a small OutputCount value, leading the function to read past the end of the received data. This can result in information disclosure and denial of service by triggering a kernel oops or panic when the next memory page is unmapped. This is only exploitable if the victim system connects to a malicious or compromised SMB server or if an attacker is able to perform a man-in-the-middle attack on an SMB session.
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