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Vulnerability · Published May 22, 2024 · Assigned by Linux

CVE-2021-47474comedi: vmk80xx: fix bulk-buffer overflow

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.3%top 82.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: comedi: vmk80xx: fix bulk-buffer overflow The driver is using endpoint-sized buffers but must not assume that the tx and rx buffers are of equal size or a malicious device could overflow the slab-allocated receive buffer when doing bulk transfers.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.15.3-1DEBIAN-CVE-2021-47474
Debian:13linux5.15.3-1DEBIAN-CVE-2021-47474
Debian:14linux5.15.3-1DEBIAN-CVE-2021-47474
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47474
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47474
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47474

Affected products (as reported)

VendorProductVersions
Linux Linux 985cafccbf9b7f862aa1c5ee566801e18b5161fb – before e0e6a63fd97ad95fe05dfd77268a1952551e11a7985cafccbf9b7f862aa1c5ee566801e18b5161fb – before 7cfb35db607760698d299fd1cf7402dfa8f09973985cafccbf9b7f862aa1c5ee566801e18b5161fb – before 0866dcaa828c21bc2f94dac00e086078f11b5772985cafccbf9b7f862aa1c5ee566801e18b5161fb – before 063f576c43d589a4c153554b681d32b3f8317c7b985cafccbf9b7f862aa1c5ee566801e18b5161fb – before 1ae4715121a57bc6fa29fd992127b01907f2f993985cafccbf9b7f862aa1c5ee566801e18b5161fb – before b7fd7f3387f070215e6be341e68eb5c087eeecc0985cafccbf9b7f862aa1c5ee566801e18b5161fb – before 7b0e356189327287d0eb98ec081bd6dd97068cd3985cafccbf9b7f862aa1c5ee566801e18b5161fb – before 47b4636ebdbeba2044b3db937c4d2b6a4fe3d0f2
Linux Linux 2.6.31

References