Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.1.122, < 6.1.127 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/212fe1c0df4a150fb6298db2cfff267ceaba5402Patch
- https://git.kernel.org/stable/c/571d3f6045cd3a6d9f6aec33b678f3ffe97582efPatch
- https://git.kernel.org/stable/c/902ef8f16d5ca77edc77c30656be54186c1e99b7Patch
- https://git.kernel.org/stable/c/fe3de867f94819ba0f28e035c0b0182150147d95Patch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
FAQ
What is CVE-2025-21671?
CVE-2025-21671 is a vulnerability with a CVSS score of 7.8 (HIGH). 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. Wh...
How severe is CVE-2025-21671?
CVE-2025-21671 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21671?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.