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{"bugzilla": {"description": "kernel: btrfs: clean up our handling of refs == 0 in snapshot delete", "id": "2315192", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2315192"}, "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-415", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: clean up our handling of refs == 0 in snapshot delete\nIn reada we BUG_ON(refs == 0), which could be unkind since we aren't\nholding a lock on the extent leaf and thus could get a transient\nincorrect answer. In walk_down_proc we also BUG_ON(refs == 0), which\ncould happen if we have extent tree corruption. Change that to return\n-EUCLEAN. In do_walk_down() we catch this case and handle it correctly,\nhowever we return -EIO, which -EUCLEAN is a more appropriate error code.\nFinally in walk_up_proc we have the same BUG_ON(refs == 0), so convert\nthat to proper error handling. Also adjust the error message so we can\nactually do something with the information."], "name": "CVE-2024-46840", "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": "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": "2024-09-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-46840\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-46840\nhttps://lore.kernel.org/linux-cve-announce/2024092754-CVE-2024-46840-fc44@gregkh/T"], "threat_severity": "Moderate"}