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kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

🗓️ 30 Jan 2024 12:29:53Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

TUN/TAP flaw causes out-of-bounds access with oversized packets when napi frags are enabled, risking crash and privilege escalation.

Related
Packages
Refs
ReporterTitlePublishedViews
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nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-023 (ALASKERNEL-5.10-2022-023)
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nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2022-011 (ALASKERNEL-5.15-2022-011)
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nessus		Alibaba Cloud Linux 3 : 0114: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0114)
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nessus		Alibaba Cloud Linux 3 : 0136: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0136)
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nessus		AlmaLinux 8 : kernel (ALSA-2023:7549)
3 Dec 202300:00
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nessus		AlmaLinux 8 : kpatch-patch (ALSA-2023:7554)
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nessus		AlmaLinux 9 : kpatch-patch (ALSA-2024:0340)
26 Jan 202400:00
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nessus		CBL Mariner 2.0 Security Update: kernel (CVE-2023-3812)
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nessus		MiracleLinux 8 : kernel-4.18.0-513.9.1.el8_9 (AXSA:2024-7403:01)
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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.4x86_64kernel-rt4.18.0-305.120.1.rt7.196.el8_4kernel-rt-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-core4.18.0-305.120.1.rt7.196.el8_4kernel-rt-core-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debug4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debug-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debug-core4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debug-core-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debug-debuginfo4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debug-debuginfo-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debug-devel4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debug-devel-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debug-kvm4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debug-kvm-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debug-modules4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debug-modules-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debug-modules-extra4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debug-modules-extra-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
Red Hat Enterprise Linux8.4x86_64kernel-rt-debuginfo4.18.0-305.120.1.rt7.196.el8_4kernel-rt-debuginfo-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
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12 Jul 2026 14:20Current
6.7Medium risk
Vulners AI Score6.7
CVSS 3.17.8
EPSS0.00344
SSVC
CWE-787
tun tapout of boundsoversized packetsnapi fragsprivilege escalationlocal user
3