Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions The _maxlevels_ondisk functions are used to compute the size of in-memory btree cursors for each btree type. Unfortunately, LOLLM noticed that the rtrmap and rtrefcount versions of these functions forget to account for the inode root, which means that we could access beyond the end of the cursor given a sufficiently large btree. Fix this.
CVSS Score
HIGH
References
- https://git.kernel.org/stable/c/108114437915e61e8f88d1cbcc442c3f886a347e
- https://git.kernel.org/stable/c/84316cb25af95a60e655ccc8fe646bb5ad631b71
- https://git.kernel.org/stable/c/aa301322f72f82f26e4ba0826018d41388ab9896
FAQ
What is CVE-2026-97548?
CVE-2026-97548 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions The _maxlevels_ondisk functions are used to compute the size of in-...
How severe is CVE-2026-97548?
CVE-2026-97548 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-97548?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.