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kernel: HMAC implementation does not validate that the underlying cryptographic hash algorithm is unkeyed allowing local attackers to cause denial-of-service

🗓️ 30 Oct 2018 12:05:20Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 1 Views

Kernel HMAC fails to validate unkeyed hash, enabling local attackers via hash interface to trigger overflow.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7ppc64lekernel0:4.14.0-115.el7akernel-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7anykernel-abi-whitelists0:4.14.0-115.el7a.noarchkernel-abi-whitelists-0:4.14.0-115.el7a.noarch.noarch.rpm
Red Hat Enterprise Linux7ppc64lekernel-bootwrapper0:4.14.0-115.el7akernel-bootwrapper-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7ppc64lekernel-debug0:4.14.0-115.el7akernel-debug-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7ppc64lekernel-debug-debuginfo0:4.14.0-115.el7akernel-debug-debuginfo-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7ppc64lekernel-debug-devel0:4.14.0-115.el7akernel-debug-devel-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7ppc64lekernel-debuginfo0:4.14.0-115.el7akernel-debuginfo-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7ppc64lekernel-debuginfo-common-ppc64le0:4.14.0-115.el7akernel-debuginfo-common-ppc64le-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7ppc64lekernel-devel0:4.14.0-115.el7akernel-devel-0:4.14.0-115.el7a.ppc64le.rpm
Red Hat Enterprise Linux7anykernel-doc0:4.14.0-115.el7a.noarchkernel-doc-0:4.14.0-115.el7a.noarch.noarch.rpm
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30 Jun 2026 11:35Current
6.9Medium risk
Vulners AI Score6.9
CVSS 27.2
CVSS 3.17.8
EPSS0.00561
1