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.
References
Configurations
Configuration 1 (hide)
|
History
28 Oct 2026, 16:02
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/68d459e6e609c31f96a203dd6eec60c634f155e1 - Patch | |
| References | () https://git.kernel.org/stable/c/93488ea378b4427598cace558236c110515d743b - Patch | |
| References | () https://git.kernel.org/stable/c/a67632c8c2688d6e0091529bcefe54bc5ee80e9b - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.3:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| CWE | CWE-416 | |
| First Time |
Linux linux Kernel
Linux |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
25 Sep 2026, 11:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-09-25 11:17
Updated : 2026-10-28 16:02
NVD link : CVE-2026-98117
Mitre link : CVE-2026-98117
CVE.ORG link : CVE-2026-98117
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free