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kernel: sg_write function lacks an sg_remove_request call in a certain failure case

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

The sg_write function in the scsi generic driver omits sg_remove_request in a failure path, enabling local attackers to cause denial of service and kernel information leak.

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4 Jun 202000:00
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Tenable Nessus		Amazon Linux 2 : kernel (ALASKERNEL-5.4-2022-012)
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Tenable Nessus		Amazon Linux AMI : kernel (ALAS-2020-1377)
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Tenable Nessus		AlmaLinux 8 : kernel (ALSA-2020:4431)
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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
6.6Medium risk
Vulners AI Score6.6
CVSS 24.6
CVSS 3.16.7
EPSS0.00586
CWE-824
scsi genericwrite path flawdenial of servicekernel information leakfailure path
1