Medium severity5.9NVD Advisory· Published Aug 23, 2022· Updated Jun 17, 2026
CVE-2021-3714
CVE-2021-3714
Description
A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
65cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
- osv-coords59 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-generic
< 0+ 58 more
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- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
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- (no CPE)range: < 6.18.5-r0
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Patches
Vulnerability mechanics
References
4- access.redhat.com/security/cve/CVE-2021-3714nvdThird Party Advisory
- arxiv.org/abs/2111.08553nvdThird Party Advisory
- arxiv.org/pdf/2111.08553.pdfnvdTechnical DescriptionThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
News mentions
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