CVE-2025-38405 Information

Jul 26, 2025 cve

Description

In the Linux kernel the following vulnerability has been resolved:

nvmet: fix memory leak of bio integrity

If nvmet receives commands with metadata there is a continuous memory leak of kmalloc-128 slab or more precisely bio->bi_integrity.

Since commit bf4c89fc8797 (lock: don’t call bio_uninit from bio_endio) each user of bio_init has to use bio_uninit as well. Otherwise the bio integrity is not getting free. Nvmet uses bio_init for inline bios.

Uninit the inline bio to complete deallocation of integrity in bio.

Reference

https://git.kernel.org/stable/c/190f4c2c863af7cc5bb354b70e0805f06419c038 https://git.kernel.org/stable/c/2e2028fcf924d1c6df017033c8d6e28b735a0508 https://git.kernel.org/stable/c/431e58d56fcb5ff1f9eb630724a922e0d2a941df

CNNVD-202507-3235 (Published: 2025-07-25)

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