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Vulnerability · Published Oct 21, 2024 · Assigned by Linux

CVE-2024-49943drm/xe/guc_submit: add missing locking in wedged_fini

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 5% 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 94.7% 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/xe/guc_submit: add missing locking in wedged_fini Any non-wedged queue can have a zero refcount here and can be running concurrently with an async queue destroy, therefore dereferencing the queue ptr to check wedge status after the lookup can trigger UAF if queue is not wedged. Fix this by keeping the submission_state lock held around the check to postpone the free and make the check safe, before dropping again around the put() to avoid the deadlock. (cherry picked from commit d28af0b6b9580b9f90c265a7da0315b0ad20bbfd)

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.11.4-1DEBIAN-CVE-2024-49943
Debian:14linux6.11.4-1DEBIAN-CVE-2024-49943
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-49943
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1015.15UBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-49943
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-49943

Affected products (as reported)

VendorProductVersions
Linux Linux 8ed9aaae39f39130b7a3eb2726be05d7f64b344c – before d88f9bab7e62dd0dbe983fa70cf040042a60cc848ed9aaae39f39130b7a3eb2726be05d7f64b344c – before 790533e44bfc7af929842fccd9674c9f424d4627
Linux Linux 6.11

References