fs: udf: fix OOB read in lengthAllocDescs handling

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CVE-2025-40044 · Microsoft / collected KEV context

cve-program · CVE-2025-40044

• https://git.kernel.org/stable/c/14496175b264d30c2045584ee31d062af2e3a660
• https://git.kernel.org/stable/c/d2ed9aa8ae50fb0d4ac5ab07e4c67ba7e9a24818
• https://git.kernel.org/stable/c/1d1847812a1a5375c10a2a779338df643f79c047
• https://git.kernel.org/stable/c/918649364fbca7d5df72522ca795479edcd25f91
• https://git.kernel.org/stable/c/a70dcfa8d0a0cc530a6af59483dfca260b652c1b
• https://git.kernel.org/stable/c/b57f2d7d3e6bb89ed82330c5fe106cdfa34d3e24
• https://git.kernel.org/stable/c/459404f858213967ccfff336c41747d8dd186d38
• https://git.kernel.org/stable/c/3bd5e45c2ce30e239d596becd5db720f7eb83c99

No related operational record is retained in the current change model.