CVE-2026-97548xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 9abe03a0e4f978615a2b1b484b8d09ca84c16ea0 before 108114437915e61e8f88d1cbcc442c3f886a347e; from 9abe03a0e4f978615a2b1b484b8d09ca84c16ea0 before 84316cb25af95a60e655ccc8fe646bb5ad631b71; from 9abe03a0e4f978615a2b1b484b8d09ca84c16ea0 before aa301322f72f82f26e4ba0826018d41388ab9896 | CNA record |
References
- https://git.kernel.org/stable/c/108114437915e61e8f88d1cbcc442c3f886a347e
- https://git.kernel.org/stable/c/84316cb25af95a60e655ccc8fe646bb5ad631b71
- https://git.kernel.org/stable/c/aa301322f72f82f26e4ba0826018d41388ab9896
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.