Description
In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctl_pkey_params_get_2() The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3 Patch
- git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d Patch
- git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2c Patch
- git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3a Patch
- git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78 Patch
- git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430c Patch
- git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69a Patch
- git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 14 November 2026
- CWE
- CWE-787
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.