CVE-2024-47705
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…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 12th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/26e197b7f9240a4ac301dd0ad520c0c697c2ea7dPatch
- https://git.kernel.org/stable/c/4bc4272e2506941c3f3d4fb8b0c659ee814dcf6fPatch
- https://git.kernel.org/stable/c/64cf2a39202ca2d9df5ee70eb310b6141ce2b8edPatch
- https://git.kernel.org/stable/c/652039ba477c9a4ab43740cf2cb0d068d53508c2Patch
- https://git.kernel.org/stable/c/80f5bfbb80ea1615290dbc24f49d3d8c86db58fePatch
- https://git.kernel.org/stable/c/afe53ea9b378c376101d99d216f13b6256f75189Patch
- https://git.kernel.org/stable/c/cc4d21d9492db4e534d3e01253cf885c90dd2a8bPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.