CVE-2026-43304
libceph: define and enforce CEPH_MAX_KEY_LEN
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: libceph: define and enforce CEPH_MAX_KEY_LEN When decoding the key, verify that the key material would fit into a fixed-size buffer in process_auth_done() and generally has a sane length. The new CEPH_MAX_KEY_LEN check replaces the existing check for a key with no key material which is a) not universal since CEPH_CRYPTO_NONE has to be excluded and b) doesn't provide much value since a smaller than needed key is just as invalid as no key -- this has to be handled elsewhere anyway.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 8, 2026 |
| Last Updated | May 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
cd1a677cad994021b19665ed476aea63f5d54f31 < 6405e8c680974bb74e2c98d5249fb52c7b12a6c6 cd1a677cad994021b19665ed476aea63f5d54f31 < 8d745d38c88ecbed95f6b2b39857bf89f35a3244 cd1a677cad994021b19665ed476aea63f5d54f31 < e1dc45d97975f9db65694d234fbddf1915176e16 cd1a677cad994021b19665ed476aea63f5d54f31 < 1b275bd49e58752efb83767a5d1aed41356c5e64 cd1a677cad994021b19665ed476aea63f5d54f31 < c1a0f5f1e5e7e98c36a362ec3d1fcfd9932931ed cd1a677cad994021b19665ed476aea63f5d54f31 < d82467c07b03a27c3c5469b62bb3b726305a80bb cd1a677cad994021b19665ed476aea63f5d54f31 < ac431d597a9bdfc2ba6b314813f29a6ef2b4a3bf
Linux / Linux
5.11
References
git.kernel.org: https://git.kernel.org/stable/c/6405e8c680974bb74e2c98d5249fb52c7b12a6c6 git.kernel.org: https://git.kernel.org/stable/c/8d745d38c88ecbed95f6b2b39857bf89f35a3244 git.kernel.org: https://git.kernel.org/stable/c/e1dc45d97975f9db65694d234fbddf1915176e16 git.kernel.org: https://git.kernel.org/stable/c/1b275bd49e58752efb83767a5d1aed41356c5e64 git.kernel.org: https://git.kernel.org/stable/c/c1a0f5f1e5e7e98c36a362ec3d1fcfd9932931ed git.kernel.org: https://git.kernel.org/stable/c/d82467c07b03a27c3c5469b62bb3b726305a80bb git.kernel.org: https://git.kernel.org/stable/c/ac431d597a9bdfc2ba6b314813f29a6ef2b4a3bf