CVE-2026-72033

CVE-2026-72033

Critical · published August 15, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
55.9
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

orangefs: keep the readdir entry size 64-bit in fill_from_part()

fill_from_part() computes the size of a directory entry in size_t but

stores it in a __u32. An entry length near U32_MAX wraps it to a small

value, bypasses the bounds check, and is then used to index the entry,

reading far past the directory part -- an out-of-bounds read that oopses

the kernel.

Compute the size as a u64 so it cannot truncate; the bounds check then

rejects the entry. The trailer is supplied by the userspace client.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00793 · 55.9th percentile
Published
2026-08-15T10:21Z
References (8)
EPSS history
Timeline
  • 15 AUG 05:51Z
    orangefs: keep the readdir entry size 64-bit in fill_from_part()
    cvelistv5