High severity7.8NVD Advisory· Published Jul 19, 2026· Updated Aug 17, 2026
CVE-2026-63824
CVE-2026-63824
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
16- osv-coords15 versionspkg:linux/kernelpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
>= 4.20.0, < 5.10.260+ 14 more
- (no CPE)range: >= 4.20.0, < 5.10.260
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1.160000.2.19
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 7.1.4-1.1
- (no CPE)range: < 6.12.0-160000.37.1
- (no CPE)range: < 6.12.0-160000.37.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3nvd
- git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8dnvd
- git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2cnvd
- git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3anvd
- git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78nvd
- git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430cnvd
- git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69anvd
- git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0bnvd
News mentions
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