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kernel: fget: check that the fd still exists after getting a ref to it

🗓️ 29 Mar 2022 08:55:12Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 6 Views

A read-after-free race between close and file descriptor access in Unix domain socket garbage collection can crash the system or escalate privileges.

Related
Packages
Refs
ReporterTitlePublishedViews
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IBM Security Bulletins		Security Bulletin: IBM QRadar Network Packet Capture includes multiple vulnerable components.
5 Jul 202213:50
–ibm
IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in Linux Kernel affect IBM Spectrum Protect Plus
29 Jun 202223:37
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IBM Security Bulletins		Security Bulletin: Linux Kernel vulnerability may affect IBM Elastic Storage System (CVE-2021-4083)
23 May 202212:55
–ibm
IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM includes components with multiple known vulnerabilities
23 Aug 202213:34
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IBM Security Bulletins		Security Bulletin: Vulnerabilities in the Linux Kernel affect IBM Spectrum Copy Data Management
9 Jun 202217:51
–ibm
ATTACKERKB		CVE-2021-4083
18 Jan 202217:15
–attackerkb
Tenable Nessus		Amazon Linux 2 : kernel (ALAS-2022-1749)
7 Feb 202200:00
–nessus
Tenable Nessus		AlmaLinux 8 : kernel (ALSA-2022:1988)
12 May 202200:00
–nessus
Tenable Nessus		CentOS 9 : kernel-5.14.0-347.el9
29 Feb 202400:00
–nessus
Tenable Nessus		CentOS 7 : kpatch-patch (RHSA-2022:1185)
9 Oct 202400:00
–nessus
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7x86_64kernel0:3.10.0-693.99.1.el7kernel-0:3.10.0-693.99.1.el7.x86_64.rpm
Red Hat Enterprise Linux7noarchkernel-abi-whitelists0:3.10.0-693.99.1.el7kernel-abi-whitelists-0:3.10.0-693.99.1.el7.noarch.rpm
Red Hat Enterprise Linux7x86_64kernel-debug0:3.10.0-693.99.1.el7kernel-debug-0:3.10.0-693.99.1.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-debug-debuginfo0:3.10.0-693.99.1.el7kernel-debug-debuginfo-0:3.10.0-693.99.1.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-debug-devel0:3.10.0-693.99.1.el7kernel-debug-devel-0:3.10.0-693.99.1.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-debuginfo0:3.10.0-693.99.1.el7kernel-debuginfo-0:3.10.0-693.99.1.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-debuginfo-common-x86_640:3.10.0-693.99.1.el7kernel-debuginfo-common-x86_64-0:3.10.0-693.99.1.el7.x86_64.rpm
Red Hat Enterprise Linux7x86_64kernel-devel0:3.10.0-693.99.1.el7kernel-devel-0:3.10.0-693.99.1.el7.x86_64.rpm
Red Hat Enterprise Linux7noarchkernel-doc0:3.10.0-693.99.1.el7kernel-doc-0:3.10.0-693.99.1.el7.noarch.rpm
Red Hat Enterprise Linux7x86_64kernel-tools0:3.10.0-693.99.1.el7kernel-tools-0:3.10.0-693.99.1.el7.x86_64.rpm
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28 Jun 2026 12:36Current
6.6Medium risk
Vulners AI Score6.6
CVSS 26.9
CVSS 3.17
EPSS0.0031
CWE-362
linux kernelunix domain socketgarbage collectionread after freerace conditionclose access racelocal usersystem crashprivilege escalation
6