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{"bugzilla": {"description": "kernel: nilfs2: fix NULL i_assoc_inode dereference in nilfs_mdt_save_to_shadow_map", "id": "2461561", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2461561"}, "csaw": false, "cwe": "CWE-824", "details": ["A flaw was found in the `nilfs2` filesystem within the Linux kernel. A local user can trigger a null pointer dereference by calling the `NILFS_IOCTL_CLEAN_SEGMENTS` operation immediately after mounting the filesystem, but before any btree operations have occurred on the Data Allocation Table (DAT) inode. This can lead to a general protection fault, resulting in a system crash and a Denial of Service (DoS)."], "name": "CVE-2026-31577", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "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": "2026-04-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-31577\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-31577\nhttps://lore.kernel.org/linux-cve-announce/2026042410-CVE-2026-31577-5e81@gregkh/T"], "threat_severity": "Moderate"}