Dashboard / CVE-2026-98117

CVE-2026-98117

HIGH
MEDIUM Priority: 0.01 BB Relevance: 41/100
Published: 2026-09-25 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix potential UAF/KASAN warning Currently, trace_cachefiles_coherency() is being passed a pointer to a __be64 lain over the coherency data in struct cachefiles_xattr so that it can display the first 8 bytes. However, the data is of variable length and could even be 0 bytes. This could lead to a UAF or KASAN warning. Fix this by making sure the buffer has room for at least 8 bytes and that those 8 bytes are pre-cleared. Further, those bytes are not 8-byte aligned, so fix the tracepoint to extract the data as four 2-byte words (they are 2-byte aligned) and reassemble the __be64. The compiler will convert this into a single 8-byte load where the CPU supports it.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
linux linux_kernel 6.14 – 6.18.53
linux linux_kernel 7.3
linux linux_kernel 7.3

References & Advisories (3)

Bug Bounty Relevance

41 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.13%
Raw Score 0.001280
Percentile 2.4%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00128
2026-10-28
0.00167

Intelligence Sources

nvd ref →

External Links