{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-21739", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21739", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-02-27T02:12:14.581Z", "updatedAt": "2026-06-01T16:05:01.006Z", "importedAt": "2026-10-24T01:57:29.455Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "scsi: ufs: core: Fix use-after free in init error and remove paths", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Fix use-after free in init error and remove paths\n\ndevm_blk_crypto_profile_init() registers a cleanup handler to run when\nthe associated (platform-) device is being released. For UFS, the\ncrypto private data and pointers are stored as part of the ufs_hba's\ndata structure 'struct ufs_hba::crypto_profile'. This structure is\nallocated as part of the underlying ufshcd and therefore Scsi_host\nallocation.\n\nDuring driver release or during error handling in ufshcd_pltfrm_init(),\nthis structure is released as part of ufshcd_dealloc_host() before the\n(platform-) device associated with the crypto call above is released.\nOnce this device is released, the crypto cleanup code will run, using\nthe just-released 'struct ufs_hba::crypto_profile'. This causes a\nuse-after-free situation:\n\n Call trace:\n kfree+0x60/0x2d8 (P)\n kvfree+0x44/0x60\n blk_crypto_profile_destroy_callback+0x28/0x70\n devm_action_release+0x1c/0x30\n release_nodes+0x6c/0x108\n devres_release_all+0x98/0x100\n device_unbind_cleanup+0x20/0x70\n really_probe+0x218/0x2d0\n\nIn other words, the initialisation code flow is:\n\n platform-device probe\n ufshcd_pltfrm_init()\n ufshcd_alloc_host()\n scsi_host_alloc()\n allocation of struct ufs_hba\n creation of scsi-host devices\n devm_blk_crypto_profile_init()\n devm registration of cleanup handler using platform-device\n\nand during error handling of ufshcd_pltfrm_init() or during driver\nremoval:\n\n ufshcd_dealloc_host()\n scsi_host_put()\n put_device(scsi-host)\n release of struct ufs_hba\n put_device(platform-device)\n crypto cleanup handler\n\nTo fix this use-after free, change ufshcd_alloc_host() to register a\ndevres action to automatically cleanup the underlying SCSI device on\nufshcd destruction, without requiring explicit calls to\nufshcd_dealloc_host(). This way:\n\n * the crypto profile and all other ufs_hba-owned resources are\n destroyed before SCSI (as they've been registered after)\n * a memleak is plugged in tc-dwc-g210-pci.c remove() as a\n side-effect\n * EXPORT_SYMBOL_GPL(ufshcd_dealloc_host) can be removed fully as\n it's not needed anymore\n * no future drivers using ufshcd_alloc_host() could ever forget\n adding the cleanup", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350", "status": "affected", "versionType": "git", "lessThan": "0a6895c03b1f439236e2d22b1a69ebfc1eb9d5ea" }, { "version": "d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350", "status": "affected", "versionType": "git", "lessThan": "d06eb2620d3bf16056b8b7ea3744dbb5e30512f4" }, { "version": "d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350", "status": "affected", "versionType": "git", "lessThan": "0dc539b888fb5f56b6eeddd95433eab557d4b0c1" }, { "version": "d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350", "status": "affected", "versionType": "git", "lessThan": "0c77c0d754fe83cb154715fcfec6c3faef94f207" }, { "version": "d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350", "status": "affected", "versionType": "git", "lessThan": "9c185beae09a3eb85f54777edafa227f7e03075d" }, { "version": "d76d9d7d1009968dd3a0fc30e5f5ee9fbffc1350", "status": "affected", "versionType": "git", "lessThan": "f8fb2403ddebb5eea0033d90d9daae4c88749ada" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.12", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.12" }, { "version": "5.15.209", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.175", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.135", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.14", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.13.3", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.13.*" }, { "version": "6.14", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }