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Vulnerability · Published Aug 21, 2024 · Assigned by Linux

CVE-2022-48887drm/vmwgfx: Remove rcu locks from user resources

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 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 83.9% 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: drm/vmwgfx: Remove rcu locks from user resources User resource lookups used rcu to avoid two extra atomics. Unfortunately the rcu paths were buggy and it was easy to make the driver crash by submitting command buffers from two different threads. Because the lookups never show up in performance profiles replace them with a regular spin lock which fixes the races in accesses to those shared resources. Fixes kernel oops'es in IGT's vmwgfx execution_buffer stress test and seen crashes with apps using shared resources.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.7-1DEBIAN-CVE-2022-48887
Debian:13linux6.1.7-1DEBIAN-CVE-2022-48887
Debian:14linux6.1.7-1DEBIAN-CVE-2022-48887
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2022-48887
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2022-48887
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2022-48887

Affected products (as reported)

VendorProductVersions
Linux Linux e14c02e6b6990e9f6ee18a214a22ac26bae1b25e – before 7ac9578e45b20e3f3c0c8eb71f5417a499a7226ae14c02e6b6990e9f6ee18a214a22ac26bae1b25e – before a309c7194e8a2f8bd4539b9449917913f6c2cd50
Linux Linux 4.20

References