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kernel: cls_flower: out-of-bounds write in fl_set_geneve_opt()

🗓️ 22 Aug 2023 14:09:58Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 4 Views

Linux kernel TC flower flaw causes out-of-bounds write in geneve options for 252 bytes, risking DoS or privilege escalation.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7.7ppc64lekpatch-patch-3_10_0-1062_71_10:1-3.el7kpatch-patch-3_10_0-1062_71_1-0:1-3.el7.ppc64le.rpm
Red Hat Enterprise Linux7.7x86_64kpatch-patch-3_10_0-1062_71_10:1-3.el7kpatch-patch-3_10_0-1062_71_1-0:1-3.el7.x86_64.rpm
Red Hat Enterprise Linux7.7ppc64lekpatch-patch-3_10_0-1062_71_1-debuginfo0:1-3.el7kpatch-patch-3_10_0-1062_71_1-debuginfo-0:1-3.el7.ppc64le.rpm
Red Hat Enterprise Linux7.7x86_64kpatch-patch-3_10_0-1062_71_1-debuginfo0:1-3.el7kpatch-patch-3_10_0-1062_71_1-debuginfo-0:1-3.el7.x86_64.rpm
Red Hat Enterprise Linux7.7ppc64lekpatch-patch-3_10_0-1062_72_10:1-2.el7kpatch-patch-3_10_0-1062_72_1-0:1-2.el7.ppc64le.rpm
Red Hat Enterprise Linux7.7x86_64kpatch-patch-3_10_0-1062_72_10:1-2.el7kpatch-patch-3_10_0-1062_72_1-0:1-2.el7.x86_64.rpm
Red Hat Enterprise Linux7.7ppc64lekpatch-patch-3_10_0-1062_72_1-debuginfo0:1-2.el7kpatch-patch-3_10_0-1062_72_1-debuginfo-0:1-2.el7.ppc64le.rpm
Red Hat Enterprise Linux7.7x86_64kpatch-patch-3_10_0-1062_72_1-debuginfo0:1-2.el7kpatch-patch-3_10_0-1062_72_1-debuginfo-0:1-2.el7.x86_64.rpm
Red Hat Enterprise Linux7.7ppc64lekpatch-patch-3_10_0-1062_76_10:1-1.el7kpatch-patch-3_10_0-1062_76_1-0:1-1.el7.ppc64le.rpm
Red Hat Enterprise Linux7.7x86_64kpatch-patch-3_10_0-1062_76_10:1-1.el7kpatch-patch-3_10_0-1062_76_1-0:1-1.el7.x86_64.rpm
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28 Jun 2026 12:18Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.17.8
EPSS0.00532
CWE-787
linux kernelflower classifiergeneve optionsout of boundsdenial of serviceprivilege escalationthree packets
4