CVE-2025-71116

In the Linux kernel, the following vulnerability has been resolved:

libceph: make decode_pool() more resilient against corrupted osdmaps

If the osdmap is (maliciously) corrupted such that the encoded length
of ceph_pg_pool envelope is less than what is expected for a particular
encoding version, out-of-bounds reads may ensue because the only bounds
check that is there is based on that length value.

This patch adds explicit bounds checks for each field that is decoded
or skipped.

• https://git.kernel.org/stable/c/2acb8517429ab42146c6c0ac1daed1f03d2fd125

  416baaa9-dc9f-4396-8d5f-8c081fb06d67
• https://git.kernel.org/stable/c/5d0d8c292531fe356c4e94dcfdf7d7212aca9957

  416baaa9-dc9f-4396-8d5f-8c081fb06d67
• https://git.kernel.org/stable/c/8c738512714e8c0aa18f8a10c072d5b01c83db39

  416baaa9-dc9f-4396-8d5f-8c081fb06d67
• https://git.kernel.org/stable/c/c82e39ff67353a5a6cbc07b786b8690bd2c45aaa

  416baaa9-dc9f-4396-8d5f-8c081fb06d67
• https://git.kernel.org/stable/c/e927ab132b87ba3f076705fc2684d94b24201ed1

  416baaa9-dc9f-4396-8d5f-8c081fb06d67