CVE-2026-99080 is a vulnerability in Linux Kernel
Published on October 23, 2026
fs: Free any excess xarray nodes in clear_inode()
In the Linux kernel, the following vulnerability has been resolved:
fs: Free any excess xarray nodes in clear_inode()
For many years we've had a hard to hit leak of xarray nodes. Hugh
documented it well in commit 786b31121a2c. Recently people and
syzbot have found ways to force it to happen with madvise. Rather
than fix the leaks where they happen, just call xa_destroy() which
has the side-effect of cycling the i_pages lock.
Products Associated with CVE-2026-99080
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Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below f1c966eb6ed5e190c90a56c5bdaa69967de39f21 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 21f51434c47d8628b62275ae6c6ad6b573abcd02 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 50cff3f112d64db6e5f57355f79bc837db8fe132 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 43f830e2bb84b22ca824b20bb861d823ecb520bd is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below ee3f011250104129893d8e9599147e457d4d7280 is affected.
- Before 6.6.160 is affected.
- Before 6.12.113 is affected.
- Before 6.18.57 is affected.
- Before 7.2.11 is affected.
- Version 6.6.160, <= 6.6.* is unaffected.
- Version 6.12.113, <= 6.12.* is unaffected.
- Version 6.18.57, <= 6.18.* is unaffected.
- Version 7.2.11, <= 7.2.* is unaffected.
- Version 7.3, <= * is unaffected.