CVE-2026-99080

UnknownEPSS 0.19%

Last modified

CVE-2026-99080 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.19%

8.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < 3e837269bbfe78a602e0c259d57ffafe7a4df3b2; >= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < 813779d7974e51a6950c7237708853b129d564e1; >= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < 04456642e33022cc53562a91393a09d492124b44; >= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < f1c966eb6ed5e190c90a56c5bdaa69967de39f21; >= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < 21f51434c47d8628b62275ae6c6ad6b573abcd02; >= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < 50cff3f112d64db6e5f57355f79bc837db8fe132; >= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < 43f830e2bb84b22ca824b20bb861d823ecb520bd; >= 77da9389b9d5f07d54fda092d1ab56002ec0019a, < ee3f011250104129893d8e9599147e457d4d7280
LinuxLinux4.20

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-99080?
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.
How severe is CVE-2026-99080?
Severity scoring for CVE-2026-99080 is pending analysis. The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2026-99080?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST