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{"bugzilla": {"description": "kernel: cachefiles: add missing lock protection when polling", "id": "2303518", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2303518"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-667", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ncachefiles: add missing lock protection when polling\nAdd missing lock protection in poll routine when iterating xarray,\notherwise:\nEven with RCU read lock held, only the slot of the radix tree is\nensured to be pinned there, while the data structure (e.g. struct\ncachefiles_req) stored in the slot has no such guarantee. The poll\nroutine will iterate the radix tree and dereference cachefiles_req\naccordingly. Thus RCU read lock is not adequate in this case and\nspinlock is needed here.", "A flaw was found in the cachefiles module in the Linux kernel. An improper locking protection in the cachefiles_daemon_poll function in the fs/cachefiles/daemon.c file can result in a race condition."], "name": "CVE-2024-42250", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-08-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-42250\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-42250\nhttps://lore.kernel.org/linux-cve-announce/2024080743-CVE-2024-42250-9580@gregkh/T"], "statement": "The kernel, as shipped in Red Hat Enterprise Linux 8 and 9, is not affected by this vulnerability because the vulnerable code is not present.", "threat_severity": "Moderate"}