Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 before 51d162dfb618f6cf3aa5e331c0305e27771ad884; affected 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 before 8a2494964edac2a13e82441c2bf887548dc3be0b; affected 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 before 1e1c36b206c659cf94c6755a1d821ed1babd32bc; affected 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 before 23e4162405c456ce12c772d5882d306135e828ae; affected 5c83746a0cf2831d4b59f5cf99ef5fbf138564e4 before c056f817e4200fb18079d5052c273a22f191ff0a |
| Linux / Linux | affected 3.18; unaffected 0 before 3.18; unaffected 6.6.160 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- 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