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kernel: Setting a POSIX ACL via setxattr doesn't clear the setgid bit

🗓️ 21 Mar 2017 09:06:51Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

Kernel: POSIX access control set with setxattr does not clear the setgid bit, risking local privilege escalation.

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Refs
ReporterTitlePublishedViews
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IBM Security Bulletins		Security Bulletin: IBM QRadar Network Security is affected by vulnerabilities in Linux kernel
16 Jun 201822:04
–ibm
IBM Security Bulletins		Security Bulletin: A vulnerability in the Linux kernel affects PowerKVM
18 Jun 201801:36
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in the Linux kernel affect PowerKVM
18 Jun 201801:40
–ibm
Amazon		Important: kernel
6 Mar 201700:00
–amazon
Tenable Nessus		Amazon Linux AMI : kernel (ALAS-2017-805)
7 Mar 201700:00
–nessus
Tenable Nessus		CentOS 6 : kernel (CESA-2017:0817)
27 Mar 201700:00
–nessus
Tenable Nessus		CentOS 7 : kernel (CESA-2017:1842) (Stack Clash)
25 Aug 201700:00
–nessus
Tenable Nessus		Debian DLA-772-1 : linux security update
3 Jan 201700:00
–nessus
Tenable Nessus		EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1494)
15 May 201900:00
–nessus
Tenable Nessus		EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1532)
14 May 201900:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6ppc64kernel0:2.6.32-696.el6kernel-0:2.6.32-696.el6.ppc64.rpm
Red Hat Enterprise Linux6s390xkernel0:2.6.32-696.el6kernel-0:2.6.32-696.el6.s390x.rpm
Red Hat Enterprise Linux6x86_64kernel0:2.6.32-696.el6kernel-0:2.6.32-696.el6.x86_64.rpm
Red Hat Enterprise Linux6anykernel0:2.6.32-696.el6.i686kernel-0:2.6.32-696.el6.i686.noarch.rpm
Red Hat Enterprise Linux6anykernel-abi-whitelists0:2.6.32-696.el6.noarchkernel-abi-whitelists-0:2.6.32-696.el6.noarch.noarch.rpm
Red Hat Enterprise Linux6ppc64kernel-bootwrapper0:2.6.32-696.el6kernel-bootwrapper-0:2.6.32-696.el6.ppc64.rpm
Red Hat Enterprise Linux6ppc64kernel-debug0:2.6.32-696.el6kernel-debug-0:2.6.32-696.el6.ppc64.rpm
Red Hat Enterprise Linux6s390xkernel-debug0:2.6.32-696.el6kernel-debug-0:2.6.32-696.el6.s390x.rpm
Red Hat Enterprise Linux6x86_64kernel-debug0:2.6.32-696.el6kernel-debug-0:2.6.32-696.el6.x86_64.rpm
Red Hat Enterprise Linux6anykernel-debug0:2.6.32-696.el6.i686kernel-debug-0:2.6.32-696.el6.i686.noarch.rpm
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13 May 2026 01:09Current
7.1High risk
Vulners AI Score7.1
CVSS 23.6
CVSS 34.4
EPSS0.00053
CWE-287
kernelposix access controlsetgid bitprivilege escalationlocal user
3