CVE-2025-71116

libceph: make decode_pool() more resilient against corrupted osdmaps

State: Published
Severity: 9.1 Critical
Published: Jan 14, 2026
Updated: Oct 19, 2026
Reserved: Jan 13, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	Linux

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
LinuxLinux	4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before d061be4c8040ffb1110d537654a038b8b6ad39d2Affected 4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 145d140abda80e33331c5781d6603014fa75d258Affected 4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before c82e39ff67353a5a6cbc07b786b8690bd2c45aaaAffected 4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before e927ab132b87ba3f076705fc2684d94b24201ed1Affected 4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 5d0d8c292531fe356c4e94dcfdf7d7212aca9957Affected 4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 2acb8517429ab42146c6c0ac1daed1f03d2fd125Affected 4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 8c738512714e8c0aa18f8a10c072d5b01c83db39Affected
LinuxLinux	3.9Affected before 3.9Not affected 5.10.248 through 5.10.Not affected 5.15.198 through 5.15.Not affected 6.1.160 through 6.1.Not affected 6.6.120 through 6.6.Not affected 6.12.64 through 6.12.Not affected 6.18.3 through 6.18.Not affected 6.19 and laterNot affected

Product

Versions

LinuxLinux

4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before d061be4c8040ffb1110d537654a038b8b6ad39d2Affected
4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 145d140abda80e33331c5781d6603014fa75d258Affected
4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before c82e39ff67353a5a6cbc07b786b8690bd2c45aaaAffected
4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before e927ab132b87ba3f076705fc2684d94b24201ed1Affected
4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 5d0d8c292531fe356c4e94dcfdf7d7212aca9957Affected
4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 2acb8517429ab42146c6c0ac1daed1f03d2fd125Affected
4f6a7e5ee1393ec4b243b39dac9f36992d161540 to before 8c738512714e8c0aa18f8a10c072d5b01c83db39Affected

LinuxLinux

3.9Affected
before 3.9Not affected
5.10.248 through 5.10.*Not affected
5.15.198 through 5.15.*Not affected
6.1.160 through 6.1.*Not affected
6.6.120 through 6.6.*Not affected
6.12.64 through 6.12.*Not affected
6.18.3 through 6.18.*Not affected
6.19 and laterNot affected

References

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