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kernel: increase slab leak leads to DoS

🗓️ 20 Apr 2021 15:19:59Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 10 Views

A flaw in unix_stream_recvmsg with pending signals allows a local user to crash the system via memory exhaustion.

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ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in the Linux Kernel, Docker, Python, and NGINX affect IBM Spectrum Protect Plus
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IBM Security Bulletins		Security Bulletin: IBM Data Risk Manager is affected by multiple vulnerabilities
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IBM Security Bulletins		Security Bulletin: Publicly disclosed vulnerabilities from Kernel affect IBM Netezza Host Management
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bdu_fstec
BDU FSTEC		The vulnerability of the unix_stream_recvmsg function in Linux operating system kernels, which allows a hacker to cause a service failure
30 Mar 202100:00
–bdu_fstec
nessus
Tenable Nessus		CentOS 7 : kernel (RHSA-2021:0856)
18 Mar 202100:00
–nessus
nessus
Tenable Nessus		EulerOS 2.0 SP5 : kernel (EulerOS-SA-2021-2221)
16 Jul 202100:00
–nessus
nessus
Tenable Nessus		EulerOS 2.0 SP2 : kernel (EulerOS-SA-2021-2392)
14 Sep 202100:00
–nessus
nessus
Tenable Nessus		MiracleLinux 7 : kernel-3.10.0-1160.21.1.el7 (AXSA:2021-1625:06)
20 Jan 202600:00
–nessus
nessus
Tenable Nessus		MiracleLinux 4 : kernel-2.6.32-754.35.3.el6 (AXSA:2021-1746:10)
19 Jan 202600:00
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nessus
Tenable Nessus		NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2021-0104)
27 Oct 202100:00
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6i686kernel2.6.32-754.39.1.el6kernel-2.6.32-754.39.1.el6.i686.rpm
Red Hat Enterprise Linux6s390xkernel2.6.32-754.39.1.el6kernel-2.6.32-754.39.1.el6.s390x.rpm
Red Hat Enterprise Linux6x86_64kernel2.6.32-754.39.1.el6kernel-2.6.32-754.39.1.el6.x86_64.rpm
Red Hat Enterprise Linux6noarchkernel-abi-whitelists2.6.32-754.39.1.el6kernel-abi-whitelists-2.6.32-754.39.1.el6.noarch.rpm
Red Hat Enterprise Linux6i686kernel-debug2.6.32-754.39.1.el6kernel-debug-2.6.32-754.39.1.el6.i686.rpm
Red Hat Enterprise Linux6s390xkernel-debug2.6.32-754.39.1.el6kernel-debug-2.6.32-754.39.1.el6.s390x.rpm
Red Hat Enterprise Linux6x86_64kernel-debug2.6.32-754.39.1.el6kernel-debug-2.6.32-754.39.1.el6.x86_64.rpm
Red Hat Enterprise Linux6i686kernel-debug-debuginfo2.6.32-754.39.1.el6kernel-debug-debuginfo-2.6.32-754.39.1.el6.i686.rpm
Red Hat Enterprise Linux6s390xkernel-debug-debuginfo2.6.32-754.39.1.el6kernel-debug-debuginfo-2.6.32-754.39.1.el6.s390x.rpm
Red Hat Enterprise Linux6x86_64kernel-debug-debuginfo2.6.32-754.39.1.el6kernel-debug-debuginfo-2.6.32-754.39.1.el6.x86_64.rpm
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30 Jul 2026 19:36Current
6.8Medium risk
Vulners AI Score6.8
CVSS 24.9
CVSS 3.15.5
EPSS0.00339
CWE-400
linux kernelmemory exhaustionunix stream recvmsglocal userpending signalssystem availability
10