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{"bugzilla": {"description": "kernel: aoe: avoid potential deadlock at set_capacity", "id": "2273232", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273232"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\naoe: avoid potential deadlock at set_capacity\nMove set_capacity() outside of the section procected by (&d->lock).\nTo avoid possible interrupt unsafe locking scenario:\nCPU0 CPU1\n---- ----\n[1] lock(&bdev->bd_size_lock);\nlocal_irq_disable();\n[2] lock(&d->lock);\n[3] lock(&bdev->bd_size_lock);\n<Interrupt>\n[4] lock(&d->lock);\n*** DEADLOCK ***\nWhere [1](&bdev->bd_size_lock) hold by zram_add()->set_capacity().\n[2]lock(&d->lock) hold by aoeblk_gdalloc(). And aoeblk_gdalloc()\nis trying to acquire [3](&bdev->bd_size_lock) at set_capacity() call.\nIn this situation an attempt to acquire [4]lock(&d->lock) from\naoecmd_cfg_rsp() will lead to deadlock.\nSo the simplest solution is breaking lock dependency\n[2](&d->lock) -> [3](&bdev->bd_size_lock) by moving set_capacity()\noutside."], "name": "CVE-2024-26775", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26775\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26775\nhttps://lore.kernel.org/linux-cve-announce/2024040309-CVE-2024-26775-8dc1@gregkh/T"], "threat_severity": "Low"}

{}