CVE-2024-43858

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No network protocol processing is involved.\nAC:L - The out-of-bounds index is taken verbatim from the on-disk `iagp->agstart` field, so the attacker picks the exact OOB offset deterministically in the image; there is no race and no reliance on conditions outside attacker control.\nPR:L - A low-privileged local user can supply the malicious JFS image on common desktop/kiosk configurations where udisks2/polkit permits an active session user to mount removable or loop-backed media, and the subsequent unlink that triggers `diFree` requires only ordinary write access to a directory on that filesystem.\nUI:N - Once the image is attached, no victim action is needed \u2014 the attacker's own unlink drives `jfs_evict_inode` into `diFree`, and automounters attach the media without any human step.\nS:U - The corruption stays within kernel memory under the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The unchecked index produces out-of-bounds reads of 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{"bugzilla": {"description": "kernel: jfs: Fix array-index-out-of-bounds in diFree", "id": "2305516", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2305516"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H", "status": "draft"}, "cwe": "CWE-129", "details": ["In the Linux kernel, the following vulnerability has been resolved:\njfs: Fix array-index-out-of-bounds in diFree"], "name": "CVE-2024-43858", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "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": "2024-08-17T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-43858\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-43858\nhttps://lore.kernel.org/linux-cve-announce/2024081733-CVE-2024-43858-0d3e@gregkh/T"], "threat_severity": "Moderate"}

{}