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Vulnerability · Published May 20, 2024 · Assigned by Linux

CVE-2024-35952drm/ast: Fix soft lockup

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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 93.4% 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: drm/ast: Fix soft lockup There is a while-loop in ast_dp_set_on_off() that could lead to infinite-loop. This is because the register, VGACRI-Dx, checked in this API is a scratch register actually controlled by a MCU, named DPMCU, in BMC. These scratch registers are protected by scu-lock. If suc-lock is not off, DPMCU can not update these registers and then host will have soft lockup due to never updated status. DPMCU is used to control DP and relative registers to handshake with host's VGA driver. Even the most time-consuming task, DP's link training, is less than 100ms. 200ms should be enough.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.90-1DEBIAN-CVE-2024-35952
Debian:13linux6.8.9-1DEBIAN-CVE-2024-35952
Debian:14linux6.8.9-1DEBIAN-CVE-2024-35952
Ubuntu:24.04:LTSlinux6.8.0-38.38UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-aws6.8.0-1011.12UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1011.12~22.04.1UBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-azure6.8.0-1010.10UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1010.10~22.04.1UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-gcp6.8.0-1010.11UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-gke6.8.0-1006.9UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-ibm6.8.0-1008.8UBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-intel6.8.0-1007.14UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-38.38.1UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1009.9UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1009.9~22.04.1UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1008.8UBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-oracle6.8.0-1008.8UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1008.8~22.04.1UBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-raspi6.8.0-1007.7UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-35952
Ubuntu:24.04:LTSlinux-riscv6.8.0-38.38.1UBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-35952
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-35952

Affected products (as reported)

VendorProductVersions
Linux Linux 594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 – before 8a6fea3fcb577a543ef67683ca7105bde49a38fb594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 – before a81b2acd43e24e419f65df97348c76a5a1496066594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 – before 35768baf0fdfc47ede42d899506bad78450e9294594e9c04b5864b4b8b151ef4ba9521c59e0f5c54 – before bc004f5038220b1891ef4107134ccae44be55109
Linux Linux 5.19

References