CVE-2025-38405

Summary

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 ("block: 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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbf4c89fc8797f5c0964a0c3d561fbe7e8483b62f < 431e58d56fcb5ff1f9eb630724a922e0d2a941dfaffected
LinuxLinuxbf4c89fc8797f5c0964a0c3d561fbe7e8483b62f < 2e2028fcf924d1c6df017033c8d6e28b735a0508affected
LinuxLinuxbf4c89fc8797f5c0964a0c3d561fbe7e8483b62f < 190f4c2c863af7cc5bb354b70e0805f06419c038affected
LinuxLinux64149da0fddbbfe43e11c0348d8c8b4171dae3a2affected
LinuxLinux6.10.10 < 6.11affected
LinuxLinux6.11affected
LinuxLinux0 < 6.11unaffected
LinuxLinux6.12.37 <= 6.12.*unaffected
LinuxLinux6.15.6 <= 6.15.*unaffected
LinuxLinux6.16 <= *unaffected

Weaknesses

References