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Vulnerability · Published Mar 25, 2024 · Assigned by Linux

CVE-2021-47177iommu/vt-d: Fix sysfs leak in alloc_iommu()

Medium 5.5

In plain English

A medium-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 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 85.0% 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: iommu/vt-d: Fix sysfs leak in alloc_iommu() iommu_device_sysfs_add() is called before, so is has to be cleaned on subsequent errors.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux5.14.6-1DEBIAN-CVE-2021-47177
Debian:13linux5.14.6-1DEBIAN-CVE-2021-47177
Debian:14linux5.14.6-1DEBIAN-CVE-2021-47177
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2021-47177
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2021-47177
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2021-47177

Affected products (as reported)

VendorProductVersions
Linux Linux 39ab9555c24110671f8dc671311a26e5c985b592 – before 22da9f4978381a99f1abaeaf6c9b83be6ab5ddd839ab9555c24110671f8dc671311a26e5c985b592 – before 2ec5e9bb6b0560c90d315559c28a99723c80b99639ab9555c24110671f8dc671311a26e5c985b592 – before 044bbe8b92ab4e542de7f6c93c88ea65cccd8e2939ab9555c24110671f8dc671311a26e5c985b592 – before f01134321d04f47c718bb41b799bcdeda27873d239ab9555c24110671f8dc671311a26e5c985b592 – before ca466561eef36d1ec657673e3944eb6340bddb5b39ab9555c24110671f8dc671311a26e5c985b592 – before 0ee74d5a48635c848c20f152d0d488bf84641304
Linux Linux 4.11

References