Linux kernel: Xarray node leak in clear_inode()
CVE-2026-99080 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 77da9389b9d5f07d54fda092d1ab56002ec0019a and below 3e837269bbfe78a602e0c259d57ffafe7a4df3b2 is affected.
- Version 77da9389b9d5f07d54fda092d1ab56002ec0019a and below 813779d7974e51a6950c7237708853b129d564e1 is affected.
- Version 77da9389b9d5f07d54fda092d1ab56002ec0019a and below 04456642e33022cc53562a91393a09d492124b44 is affected.
- Version 77da9389b9d5f07d54fda092d1ab56002ec0019a and below f1c966eb6ed5e190c90a56c5bdaa69967de39f21 is affected.
- Version 77da9389b9d5f07d54fda092d1ab56002ec0019a and below 21f51434c47d8628b62275ae6c6ad6b573abcd02 is affected.
- Version 77da9389b9d5f07d54fda092d1ab56002ec0019a and below 50cff3f112d64db6e5f57355f79bc837db8fe132 is affected.
- Version 77da9389b9d5f07d54fda092d1ab56002ec0019a and below 43f830e2bb84b22ca824b20bb861d823ecb520bd is affected.
- Version 77da9389b9d5f07d54fda092d1ab56002ec0019a and below ee3f011250104129893d8e9599147e457d4d7280 is affected.
- Version 4.20 is affected.
- Before 4.20 is unaffected.
- Version 5.10.273, <= 5.10.* is unaffected.
- Version 5.15.224, <= 5.15.* is unaffected.
- Version 6.1.191, <= 6.1.* is unaffected.
- 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.