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CVE-2026-99080

Linux: fs: Free any excess xarray nodes in clear_inode()

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in21f51434c47d8628b62275ae6c6ad6b573abcd02Also 50cff3f112d64db6e5f57355f79bc837db8fe132, 43f830e2bb84b22ca824b20bb861d823ecb520bd and 4 moreCVE List
Published23 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

Show all 7 fixed versions

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 14

  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f1c966eb6ed5e190c90a56c5bdaa69967de39f21CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 21f51434c47d8628b62275ae6c6ad6b573abcd02CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 50cff3f112d64db6e5f57355f79bc837db8fe132CVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 43f830e2bb84b22ca824b20bb861d823ecb520bdCVE List
  • Linuxaffected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ee3f011250104129893d8e9599147e457d4d7280CVE List
  • Linuxaffected: all versions before 6.6.160CVE List
  • Linuxaffected: all versions before 6.12.113CVE List
  • Linuxaffected: all versions before 6.18.57CVE List
  • Linuxaffected: all versions before 7.2.11CVE List
  • Linuxunaffected: 6.6.160 through 6.6.*CVE List
  • Linuxunaffected: 6.12.113 through 6.12.*CVE List
  • Linuxunaffected: 6.18.57 through 6.18.*CVE List
  • Linuxunaffected: 7.2.11 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5