UBUNTU-CVE-2025-38275: Medium severity ubuntu/linux-hwe-edge vulnerability
In the Linux kernel, the following vulnerability has been resolved: phy: qcom-qmp-usb: Fix an NULL vs ISERR() bug The qmpusbiomap() helper function currently returns the raw result of devmioremap() for non-exclusive mappings. Since devmioremap() may return a NULL pointer and the caller only checks error pointers with ISERR(), NULL could bypass the check and lead to an invalid dereference. Fix the issue by checking if devmioremap() returns NULL. When it does, qmpusbiomap() now returns an error pointer via IOMEMERRPTR(-ENOMEM), ensuring safe and consistent error handling.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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ubuntu/linux-aws-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1046.49~22.04.1 - Upgrade
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ubuntu/linux-azure-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1051.57~22.04.1 - Upgrade
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ubuntu/linux-azure-fde-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1046.53~22.04.1 - Upgrade
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ubuntu/linux-gcp-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1047.50~22.04.2 - Upgrade
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ubuntu/linux-ibm-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1044.44~22.04.1 - Upgrade
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ubuntu/linux-nvidia-6.8to a version that resolves this vulnerability.Fixed in 6.8.0-1046.49~22.04.1 - Upgrade
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ubuntu/linux-realtime-6.14to a version that resolves this vulnerability.Fixed in 6.14.0-1012.12~24.04.1 - Upgrade
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ubuntu/linux-azure-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-1046.52+fips1 - Upgrade
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ubuntu/linux-gcp-fipsto a version that resolves this vulnerability.Fixed in 6.8.0-1047.50+fips1 - Configuration
Check whether devm_ioremap() returns NULL and convert that result to IOMEM_ERR_PTR(-ENOMEM) so the caller's IS_ERR() check catches the failure.
qmp_usb_iomap() devm_ioremap() NULL-result handling = IOMEM_ERR_PTR(-ENOMEM)