Improper Restriction of Operations within the Bounds of a Memory Buffer Affecting torvalds/linux package, versions [6.6.103,6.6.160)[6.12.43,6.12.114)[6.1.149,6.2)[6.15.11,6.16)[6.16.2,6.17)[6.17,6.18.51)[6.19,7.2.5)
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
- disclosed16 Sept 2026
- creditUnknown
Introduced: 16 Sep 2026
CVE-2026-89906 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 6.6.160, 6.12.114, 6.2, 6.16, 6.17, 6.18.51, 7.2.5 or higher.
Overview
Affected versions of this package are vulnerable to Improper Restriction of Operations within the Bounds of a Memory Buffer through the emit_bpf_tail_call process. An attacker can execute arbitrary code with kernel privileges, disclose sensitive kernel memory, or cause a denial of service by loading a specially crafted BPF program that manipulates jump offsets and triggers out-of-bounds memory access and control flow corruption.
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