CVE-2025-21671

zram: fix potential UAF of zram table

High · published January 31, 2025

CVSS v3.1
7.8
EPSS
0%
Percentile
11.4
In the wild
Unconfirmed
What it is

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

zram: fix potential UAF of zram table

If zram_meta_alloc failed early, it frees allocated zram->table without

setting it NULL. Which will potentially cause zram_meta_free to access

the table if user reset an failed and uninitialized device.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00216 · 11.4th percentile
Published
2025-01-31T11:25Z
EPSS history
Timeline
  • 31 JAN 11:25Z
    zram: fix potential UAF of zram table
    cvelistv5