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kernel: race condition in smp_task_timedout() and smp_task_done() in drivers/scsi/libsas/sas_expander.c leads to use-after-free

🗓️ 22 Dec 2020 09:43:51Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 1 Views

Race condition in sas_expander timedout and done causes use-after-free; enables privilege escalation.

Related
Packages
Refs
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IBM Security Bulletins		Security Bulletin: IBM QRadar Network Security is affected by multiple vulnerabilities in kernel.
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24 Jul 202021:16
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IBM Security Bulletins		Security Bulletin: IBM QRadar SIEM is vulnerable to using components with known vulnerabilities
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BDU FSTEC		The vulnerabilities of the functions smp_task_timedout() and smp_task_done() in the Linux kernel’s drivers/scsi/libsas/sas_expander.c file allow attackers to compromise the confidentiality, integrity, and accessibility of protected information.
8 Aug 201900:00
–bdu_fstec
Tenable Nessus		CentOS 7 : kernel (RHSA-2020:4060)
20 Oct 202000:00
–nessus
Tenable Nessus		Debian DLA-1884-1 : linux security update
14 Aug 201900:00
–nessus
Tenable Nessus		Debian DLA-1885-1 : linux-4.9 security update
20 Aug 201900:00
–nessus
Tenable Nessus		Debian DSA-4495-1 : linux - security update
12 Aug 201900:00
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Tenable Nessus		Debian DSA-4497-1 : linux - security update
14 Aug 201900:00
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7.6x86_64bpftool0:3.10.0-957.65.1.el7bpftool-0:3.10.0-957.65.1.el7.x86_64.rpm
Red Hat Enterprise Linux7.6ppc64kernel0:3.10.0-957.65.1.el7kernel-0:3.10.0-957.65.1.el7.ppc64.rpm
Red Hat Enterprise Linux7.6ppc64lekernel0:3.10.0-957.65.1.el7kernel-0:3.10.0-957.65.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7.6s390xkernel0:3.10.0-957.65.1.el7kernel-0:3.10.0-957.65.1.el7.s390x.rpm
Red Hat Enterprise Linux7.6x86_64kernel0:3.10.0-957.65.1.el7kernel-0:3.10.0-957.65.1.el7.x86_64.rpm
Red Hat Enterprise Linux7.6anykernel-abi-whitelists0:3.10.0-957.65.1.el7.noarchkernel-abi-whitelists-0:3.10.0-957.65.1.el7.noarch.noarch.rpm
Red Hat Enterprise Linux7.6ppc64kernel-bootwrapper0:3.10.0-957.65.1.el7kernel-bootwrapper-0:3.10.0-957.65.1.el7.ppc64.rpm
Red Hat Enterprise Linux7.6ppc64lekernel-bootwrapper0:3.10.0-957.65.1.el7kernel-bootwrapper-0:3.10.0-957.65.1.el7.ppc64le.rpm
Red Hat Enterprise Linux7.6ppc64kernel-debug0:3.10.0-957.65.1.el7kernel-debug-0:3.10.0-957.65.1.el7.ppc64.rpm
Red Hat Enterprise Linux7.6ppc64lekernel-debug0:3.10.0-957.65.1.el7kernel-debug-0:3.10.0-957.65.1.el7.ppc64le.rpm
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28 Jun 2026 09:06Current
7.1High risk
Vulners AI Score7.1
CVSS 3.18.1
CVSS 29.3
EPSS0.05111
CWE-366
linux kernelsas expanderrace conditiontask timed outuse after freememory corruptionprivilege escalation
1