CVE-2026-93211
nfsd: initialize DRC hash table before registering shrinker
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: nfsd: initialize DRC hash table before registering shrinker shrinker_register() precedes the INIT_LIST_HEAD loop and the drc_hashsize store. On weakly-ordered architectures (arm64, ppc), a shrinker scan can observe drc_hashsize before the bucket list heads are initialized, causing a NULL deref in the DRC shrinker callback. Move bucket initialization and the drc_hashsize store before shrinker_register() so the hash table is fully initialized before it becomes visible to the shrinker.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 24, 2026 |
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Affected Versions
Linux / Linux
8eea99a81c6f67c08fedd7db2ccd09aa93db69a7 < f060f43a67635dbb393bf5dcbfc3e8b9a44942cb 8eea99a81c6f67c08fedd7db2ccd09aa93db69a7 < b57bd8cb739cb3cf88bdb1a5903a42a707a5c282 8eea99a81c6f67c08fedd7db2ccd09aa93db69a7 < 431c70ca5163c98c746f22f16cd58ca5aefec6dc 8eea99a81c6f67c08fedd7db2ccd09aa93db69a7 < b0c58934f5cc4f05b63ef6605dd10c1d0d489e88
Linux / Linux
6.7
References
git.kernel.org: https://git.kernel.org/stable/c/f060f43a67635dbb393bf5dcbfc3e8b9a44942cb git.kernel.org: https://git.kernel.org/stable/c/b57bd8cb739cb3cf88bdb1a5903a42a707a5c282 git.kernel.org: https://git.kernel.org/stable/c/431c70ca5163c98c746f22f16cd58ca5aefec6dc git.kernel.org: https://git.kernel.org/stable/c/b0c58934f5cc4f05b63ef6605dd10c1d0d489e88