{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-46254",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-05-13T15:03:33.107Z",
        "datePublished": "2026-06-03T15:49:50.994Z",
        "dateUpdated": "2026-06-03T15:49:50.994Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-06-03T15:49:50.994Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nAppArmor: Allow apparmor to handle unaligned dfa tables\n\nThe dfa tables can originate from kernel or userspace and 8-byte alignment\nisn't always guaranteed and as such may trigger unaligned memory accesses\non various architectures. Resulting in the following\n\n[   73.901376] WARNING: CPU: 0 PID: 341 at security/apparmor/match.c:316 aa_dfa_unpack+0x6cc/0x720\n[   74.015867] Modules linked in: binfmt_misc evdev flash sg drm drm_panel_orientation_quirks backlight i2c_core configfs nfnetlink autofs4 ext4 crc16 mbcache jbd2 hid_generic usbhid sr_mod hid cdrom\nsd_mod ata_generic ohci_pci ehci_pci ehci_hcd ohci_hcd pata_ali libata sym53c8xx scsi_transport_spi tg3 scsi_mod usbcore libphy scsi_common mdio_bus usb_common\n[   74.428977] CPU: 0 UID: 0 PID: 341 Comm: apparmor_parser Not tainted 6.18.0-rc6+ #9 NONE\n[   74.536543] Call Trace:\n[   74.568561] [<0000000000434c24>] dump_stack+0x8/0x18\n[   74.633757] [<0000000000476438>] __warn+0xd8/0x100\n[   74.696664] [<00000000004296d4>] warn_slowpath_fmt+0x34/0x74\n[   74.771006] [<00000000008db28c>] aa_dfa_unpack+0x6cc/0x720\n[   74.843062] [<00000000008e643c>] unpack_pdb+0xbc/0x7e0\n[   74.910545] [<00000000008e7740>] unpack_profile+0xbe0/0x1300\n[   74.984888] [<00000000008e82e0>] aa_unpack+0xe0/0x6a0\n[   75.051226] [<00000000008e3ec4>] aa_replace_profiles+0x64/0x1160\n[   75.130144] [<00000000008d4d90>] policy_update+0xf0/0x280\n[   75.201057] [<00000000008d4fc8>] profile_replace+0xa8/0x100\n[   75.274258] [<0000000000766bd0>] vfs_write+0x90/0x420\n[   75.340594] [<00000000007670cc>] ksys_write+0x4c/0xe0\n[   75.406932] [<0000000000767174>] sys_write+0x14/0x40\n[   75.472126] [<0000000000406174>] linux_sparc_syscall+0x34/0x44\n[   75.548802] ---[ end trace 0000000000000000 ]---\n[   75.609503] dfa blob stream 0xfff0000008926b96 not aligned.\n[   75.682695] Kernel unaligned access at TPC[8db2a8] aa_dfa_unpack+0x6e8/0x720\n\nWork around it by using the get_unaligned_xx() helpers."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "security/apparmor/match.c"
                    ],
                    "versions": [
                        {
                            "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
                            "lessThan": "ec737e7fdf2f0ba7b203d4ec72cc915978b10e7e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
                            "lessThan": "23f112bd6144e815153462e12d313ac3e7027168",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
                            "lessThan": "cded636008bde2b397a7cf63b8299d7c303aaf6a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
                            "lessThan": "64802f731214a51dfe3c6c27636b3ddafd003eb0",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "security/apparmor/match.c"
                    ],
                    "versions": [
                        {
                            "version": "4.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.75",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.14",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19.4",
                            "lessThanOrEqual": "6.19.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.12.75"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.18.14"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "6.19.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "7.0"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ec737e7fdf2f0ba7b203d4ec72cc915978b10e7e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/23f112bd6144e815153462e12d313ac3e7027168"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cded636008bde2b397a7cf63b8299d7c303aaf6a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/64802f731214a51dfe3c6c27636b3ddafd003eb0"
                }
            ],
            "title": "AppArmor: Allow apparmor to handle unaligned dfa tables",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}