vulnerability
Red Hat: CVE-2025-21671: kernel: zram: fix potential UAF of zram table (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:M/C:C/I:C/A:C) | Jan 31, 2025 | Jul 9, 2025 | Jun 17, 2026 |
Severity
7
CVSS
(AV:L/AC:L/Au:M/C:C/I:C/A:C)
Published
Jan 31, 2025
Added
Jul 9, 2025
Modified
Jun 17, 2026
Description
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.
Solutions
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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