by Kastro CVE-2026-43304
Linux Linux — libceph: define and enforce CEPH_MAX_KEY_LEN
Description · from the CVE record
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.
Affected
ProductAffectedFixed inSource
Linuxcd1a677cad994021b19665ed476aea63f5d54f31 – < 6405e8c680974bb74e2c98d5249fb52c7b12a6c66405e8c680974bb74e2c98d5249fb52c7b12a6c6CNA
Linuxcd1a677cad994021b19665ed476aea63f5d54f31 – < 8d745d38c88ecbed95f6b2b39857bf89f35a32448d745d38c88ecbed95f6b2b39857bf89f35a3244CNA
Linuxcd1a677cad994021b19665ed476aea63f5d54f31 – < e1dc45d97975f9db65694d234fbddf1915176e16e1dc45d97975f9db65694d234fbddf1915176e16CNA
Linuxcd1a677cad994021b19665ed476aea63f5d54f31 – < 1b275bd49e58752efb83767a5d1aed41356c5e641b275bd49e58752efb83767a5d1aed41356c5e64CNA
Linuxcd1a677cad994021b19665ed476aea63f5d54f31 – < c1a0f5f1e5e7e98c36a362ec3d1fcfd9932931edc1a0f5f1e5e7e98c36a362ec3d1fcfd9932931edCNA
Linuxcd1a677cad994021b19665ed476aea63f5d54f31 – < d82467c07b03a27c3c5469b62bb3b726305a80bbd82467c07b03a27c3c5469b62bb3b726305a80bbCNA
Linuxcd1a677cad994021b19665ed476aea63f5d54f31 – < ac431d597a9bdfc2ba6b314813f29a6ef2b4a3bfac431d597a9bdfc2ba6b314813f29a6ef2b4a3bfCNA
Linux5.115.15.202CNA
Scores by source
Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total