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CVE-2024-47705 In the Linux kernel, the following vulnerability has been resolved: block: fix potential invalid pointer dereference…

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.

Affected products and versions

Product Affected versions Fixed in
Linux 6.12 earliest → < 6.12 6.12
Linux 6.11 earliest → < 6.11.2 6.11.2
Linux 6.10 earliest → < 6.10.13 6.10.13
Linux 6.6 earliest → < 6.6.54 6.6.54
Linux 6.1 earliest → < 6.1.113 6.1.113
Linux 5.15 earliest → < 5.15.168 5.15.168
Linux 5.10 earliest → < 5.10.227 5.10.227
Linux 5.5 No fix stated
RUGGEDCOM RST2428P 3.2 earliest → < 3.2 3.2
Show the 3 other branches
Product Affected versions Fixed in
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family 3.2 earliest → < 3.2 3.2
SCALANCE XCM-/XRM-/XCH-/XRH-300 family 3.2 earliest → < 3.2 3.2
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem 1.1 earliest → < 1.1.1 1.1.1

References

Timeline

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