Unrated severityNVD Advisory· Published Mar 10, 2021· Updated Aug 3, 2024
CVE-2021-20265
CVE-2021-20265
Description
A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allows an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
97- Linux/Linux kerneldescription
- osv-coords95 versionspkg:apk/chainguard/hyperv-daemonspkg:apk/chainguard/hyperv-daemons-6.18pkg:apk/chainguard/hyperv-daemons-genericpkg:apk/chainguard/linuxpkg:apk/chainguard/linux-aws-6.12pkg:apk/chainguard/linux-aws-6.12-boot-installedpkg:apk/chainguard/linux-aws-6.12-fips-boot-installedpkg:apk/chainguard/linux-aws-6.12-headerspkg:apk/chainguard/linux-aws-6.12-modulespkg:apk/chainguard/linux-aws-6.18pkg:apk/chainguard/linux-aws-6.18-boot-installedpkg:apk/chainguard/linux-aws-6.18-fips-boot-installedpkg:apk/chainguard/linux-aws-6.18-headerspkg:apk/chainguard/linux-aws-6.18-modulespkg:apk/chainguard/linux-aws-genericpkg:apk/chainguard/linux-aws-generic-boot-configurationpkg:apk/chainguard/linux-aws-generic-boot-installedpkg:apk/chainguard/linux-aws-generic-fips-boot-installedpkg:apk/chainguard/linux-aws-generic-headerspkg:apk/chainguard/linux-aws-generic-modulespkg:apk/chainguard/linux-azure-6.12pkg:apk/chainguard/linux-azure-6.18pkg:apk/chainguard/linux-azure-6.18-boot-installedpkg:apk/chainguard/linux-azure-6.18-fips-boot-installedpkg:apk/chainguard/linux-azure-6.18-headerspkg:apk/chainguard/linux-azure-6.18-modulespkg:apk/chainguard/linux-azure-genericpkg:apk/chainguard/linux-azure-generic-boot-configurationpkg:apk/chainguard/linux-azure-generic-boot-installedpkg:apk/chainguard/linux-azure-generic-fips-boot-installedpkg:apk/chainguard/linux-azure-generic-headerspkg:apk/chainguard/linux-azure-generic-modulespkg:apk/chainguard/linux-boot-configurationpkg:apk/chainguard/linux-boot-installedpkg:apk/chainguard/linux-gcp-6.12pkg:apk/chainguard/linux-gcp-6.18pkg:apk/chainguard/linux-gcp-6.18-boot-installedpkg:apk/chainguard/linux-gcp-6.18-fips-boot-installedpkg:apk/chainguard/linux-gcp-6.18-headerspkg:apk/chainguard/linux-gcp-6.18-modulespkg:apk/chainguard/linux-gcp-genericpkg:apk/chainguard/linux-gcp-generic-boot-installedpkg:apk/chainguard/linux-gcp-generic-fips-boot-installedpkg:apk/chainguard/linux-gcp-generic-headerspkg:apk/chainguard/linux-gcp-generic-modulespkg:apk/chainguard/linux-modulespkg:apk/chainguard/linux-qemu-6.12pkg:apk/chainguard/linux-qemu-6.18pkg:apk/chainguard/linux-qemu-genericpkg:apk/chainguard/linux-qemu-generic-bootc-boot-installedpkg:apk/chainguard/linux-qemu-melangepkg:apk/chainguard/linux-qemu-rcpkg:apk/chainguard/linux-qemu-rc-boot-installedpkg:apk/chainguard/linux-qemu-rc-fips-boot-installedpkg:apk/chainguard/linux-qemu-rc-headerspkg:apk/chainguard/linux-qemu-rc-modulespkg:apk/chainguard/linux-vmware-6.12pkg:apk/chainguard/linux-vmware-6.18pkg:apk/chainguard/linux-vmware-genericpkg:rpm/suse/kernel-bigmem&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-ppc64&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kernel-source&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/kernel-syms&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kernel-syms&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kernel-syms&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_41&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_41&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_41&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_41&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/kgraft-patch-SLE12-SP3_Update_41&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208
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- (no CPE)range: < 3.0.101-108.132.1
- (no CPE)range: < 4.4.180-94.150.1
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- (no CPE)range: < 4.4.121-92.161.1
- (no CPE)range: < 4.4.180-94.150.1
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- (no CPE)range: < 4.4.180-94.150.1
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Patches
Vulnerability mechanics
References
3- bugzilla.redhat.com/show_bug.cgimitrex_refsource_MISC
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/mitrex_refsource_MISC
- www.oracle.com/security-alerts/cpuoct2021.htmlmitrex_refsource_MISC
News mentions
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