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Vulnerability · Published May 9, 2025 · Assigned by Linux

CVE-2025-37880um: work around sched_yield not yielding in time-travel mode

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 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 92.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: um: work around sched_yield not yielding in time-travel mode sched_yield by a userspace may not actually cause scheduling in time-travel mode as no time has passed. In the case seen it appears to be a badly implemented userspace spinlock in ASAN. Unfortunately, with time-travel it causes an extreme slowdown or even deadlock depending on the kernel configuration (CONFIG_UML_MAX_USERSPACE_ITERATIONS). Work around it by accounting time to the process whenever it executes a sched_yield syscall.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linuxno fix listedDEBIAN-CVE-2025-37880
Debian:13linuxno fix listedDEBIAN-CVE-2025-37880
Debian:14linux6.16.3-1DEBIAN-CVE-2025-37880
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1011.11~24.04.1UBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2025-37880
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2025-37880
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2025-37880

Affected products (as reported)

VendorProductVersions
Linux Linux 065038706f77a56754e8f0c2556dab7e22dfe577 – before 990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2065038706f77a56754e8f0c2556dab7e22dfe577 – before 887c5c12e80c8424bd471122d2e8b6b462e12874
Linux Linux 5.3

References