In the Linux kernel, the following vulnerability has been resolved:
fuse: reject oversized dirents in page cache
fuse_add_dirent_to_cache() computes a serialized dirent size from the
server-controlled namelen field and copies the dirent into a single
page-cache page. The existing logic only checks whether the dirent fits
in the remaining space of the current page and advances to a fresh page
if not. It never checks whether the dirent itself exceeds PAGE_SIZE.
As a result, a malicious FUSE server can return a dirent with
namelen=4095, producing a serialized record size of 4120 bytes. On 4 KiB
page systems this causes memcpy() to overflow the cache page by 24 bytes
into the following kernel page.
Reject dirents that cannot fit in a single page before copying them into
the readdir cache.
References
Configurations
Configuration 1 (hide)
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History
01 Jun 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
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06 May 2026, 19:23
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Linux
Linux linux Kernel |
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| CWE | NVD-CWE-noinfo | |
| References | () https://git.kernel.org/stable/c/45c05af36311624c1148123caeb011312495d86b - Patch | |
| References | () https://git.kernel.org/stable/c/474ce83c96a55f2eeb14dee2be375eeadfdacdf5 - Patch | |
| References | () https://git.kernel.org/stable/c/51a8de6c50bf947c8f534cd73da4c8f0a13e7bed - Patch | |
| References | () https://git.kernel.org/stable/c/7de93abfaae1b2dc94da8a07a36421bd073f1d8f - Patch | |
| References | () https://git.kernel.org/stable/c/d23ad78bfd205eac26766e38ba7d79f279131098 - Patch | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* |
03 May 2026, 07:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
01 May 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-01 14:16
Updated : 2026-06-01 17:16
NVD link : CVE-2026-31694
Mitre link : CVE-2026-31694
CVE.ORG link : CVE-2026-31694
JSON object : View
Products Affected
linux
- linux_kernel
CWE