{"id":"CVE-2025-39674","summary":"scsi: ufs: ufs-qcom: Fix ESI null pointer dereference","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: ufs-qcom: Fix ESI null pointer dereference\n\nESI/MSI is a performance optimization feature that provides dedicated\ninterrupts per MCQ hardware queue. This is optional feature and UFS MCQ\nshould work with and without ESI feature.\n\nCommit e46a28cea29a (\"scsi: ufs: qcom: Remove the MSI descriptor abuse\")\nbrings a regression in ESI (Enhanced System Interrupt) configuration that\ncauses a null pointer dereference when Platform MSI allocation fails.\n\nThe issue occurs in when platform_device_msi_init_and_alloc_irqs() in\nufs_qcom_config_esi() fails (returns -EINVAL) but the current code uses\n__free() macro for automatic cleanup free MSI resources that were never\nsuccessfully allocated.\n\nUnable to handle kernel NULL pointer dereference at virtual\naddress 0000000000000008\n\n  Call trace:\n  mutex_lock+0xc/0x54 (P)\n  platform_device_msi_free_irqs_all+0x1c/0x40\n  ufs_qcom_config_esi+0x1d0/0x220 [ufs_qcom]\n  ufshcd_config_mcq+0x28/0x104\n  ufshcd_init+0xa3c/0xf40\n  ufshcd_pltfrm_init+0x504/0x7d4\n  ufs_qcom_probe+0x20/0x58 [ufs_qcom]\n\nFix by restructuring the ESI configuration to try MSI allocation first,\nbefore any other resource allocation and instead use explicit cleanup\ninstead of __free() macro to avoid cleanup of unallocated resources.\n\nTested on SM8750 platform with MCQ enabled, both with and without\nPlatform ESI support.","modified":"2026-04-02T12:48:06.431438Z","published":"2025-09-05T17:20:39.859Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39674.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6300d5c5438724c0876828da2f6e2c1a661871fc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/aaf17a35a59572c8b29372883619c3dbb0ebb50a"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39674.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39674"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e46a28cea29a0ca7d51c811acccf5d119b40c745"},{"fixed":"aaf17a35a59572c8b29372883619c3dbb0ebb50a"},{"fixed":"6300d5c5438724c0876828da2f6e2c1a661871fc"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39674.json"}}],"schema_version":"1.7.5"}