CVE-2026-43304
CRITICAL
9.8
CVSS 3.1
Description
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.
Metadata
Severity & Metrics
9.8
CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | cd1a677cad994021b19665ed476aea63f5d54f31 < 6405e8c680974bb74e2c98d5249fb52c7b12a6c6, cd1a677cad994021b19665ed476aea63f5d54f31 < 8d745d38c88ecbed95f6b2b39857bf89f35a3244, cd1a677cad994021b19665ed476aea63f5d54f31 < e1dc45d97975f9db65694d234fbddf1915176e16, cd1a677cad994021b19665ed476aea63f5d54f31 < 1b275bd49e58752efb83767a5d1aed41356c5e64 … |
| Linux | Linux | — | 5.11, 0 < 5.11, 5.15.202 ≤ 5.15.*, 6.1.165 ≤ 6.1.* … |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 9.8 | CRITICAL | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (7)
- https://git.kernel.org/stable/c/6405e8c680974bb74e2c98d5249fb52c7b12a6c6
- https://git.kernel.org/stable/c/8d745d38c88ecbed95f6b2b39857bf89f35a3244
- https://git.kernel.org/stable/c/e1dc45d97975f9db65694d234fbddf1915176e16
- https://git.kernel.org/stable/c/1b275bd49e58752efb83767a5d1aed41356c5e64
- https://git.kernel.org/stable/c/c1a0f5f1e5e7e98c36a362ec3d1fcfd9932931ed
- https://git.kernel.org/stable/c/d82467c07b03a27c3c5469b62bb3b726305a80bb
- https://git.kernel.org/stable/c/ac431d597a9bdfc2ba6b314813f29a6ef2b4a3bf