CVE-2025-21671
zram: fix potential UAF of zram table
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jan 31, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
ac3b5366b9b7c9d97b606532ceab43d2329a22f3 < fe3de867f94819ba0f28e035c0b0182150147d95 0b5b0b65561b34e6e360de317e4bcd031bfabf42 < 571d3f6045cd3a6d9f6aec33b678f3ffe97582ef 6fb92e9a52e3feae309a213950f21dfcd1eb0b40 < 902ef8f16d5ca77edc77c30656be54186c1e99b7 74363ec674cb172d8856de25776c8f3103f05e2f < 212fe1c0df4a150fb6298db2cfff267ceaba5402
Linux / Linux
6.1.122 < 6.1.127 6.6.68 < 6.6.74 6.12.7 < 6.12.11
References
git.kernel.org: https://git.kernel.org/stable/c/fe3de867f94819ba0f28e035c0b0182150147d95 git.kernel.org: https://git.kernel.org/stable/c/571d3f6045cd3a6d9f6aec33b678f3ffe97582ef git.kernel.org: https://git.kernel.org/stable/c/902ef8f16d5ca77edc77c30656be54186c1e99b7 git.kernel.org: https://git.kernel.org/stable/c/212fe1c0df4a150fb6298db2cfff267ceaba5402 lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html