CVE-2026-90150pnfs/blocklayout: Fix device leaks on parse failure

Official description

In the Linux kernel, the following vulnerability has been resolved: pnfs/blocklayout: Fix device leaks on parse failure bl_parse_concat() and bl_parse_stripe() allocate a child device array and then parse each child in turn. If parsing a child fails, the failed child is not counted in nr_children and the parent may be left with a children array that bl_free_device() will not release when nr_children is zero. Release the failed child and the already parsed children before returning the error. Also make bl_free_device() release the child array whenever the children pointer is set, so that partially initialised concat or stripe devices are cleaned up correctly. bl_parse_scsi() can also fail after assigning d->bdev_file and dropping the file reference. Clear the pointer after fput() so that an outer cleanup path does not put it again.

Affected packages & fixed versions

Affected products (as reported)

References

• https://git.kernel.org/stable/c/710ae187a5d490a894054d17645cf5c83d37dfbf
• https://git.kernel.org/stable/c/51d162dfb618f6cf3aa5e331c0305e27771ad884
• https://git.kernel.org/stable/c/8a2494964edac2a13e82441c2bf887548dc3be0b
• https://git.kernel.org/stable/c/1e1c36b206c659cf94c6755a1d821ed1babd32bc
• https://git.kernel.org/stable/c/23e4162405c456ce12c772d5882d306135e828ae
• https://git.kernel.org/stable/c/c056f817e4200fb18079d5052c273a22f191ff0a