{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["security/apparmor/match.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "60d175ecba4d067bd3379617eb09a905de476fcc", "status": "affected", "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e", "versionType": "git"}, {"lessThan": "bd00629b527888a08a5222640fea045c6f64f5b5", "status": "affected", "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e", "versionType": "git"}, {"lessThan": "ec737e7fdf2f0ba7b203d4ec72cc915978b10e7e", "status": "affected", "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e", "versionType": "git"}, {"lessThan": "23f112bd6144e815153462e12d313ac3e7027168", "status": "affected", "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e", "versionType": "git"}, {"lessThan": "cded636008bde2b397a7cf63b8299d7c303aaf6a", "status": "affected", "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e", "versionType": "git"}, {"lessThan": "64802f731214a51dfe3c6c27636b3ddafd003eb0", "status": "affected", "version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["security/apparmor/match.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.11"}, {"lessThan": "4.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.75", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.14", "versionType": "semver"}, {"lessThanOrEqual": "6.19.*", "status": "unaffected", "version": "6.19.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9460E9E9-5019-444D-B0AD-BB3A9C752456", "versionEndExcluding": "6.12.75", "versionStartIncluding": "4.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BF463CB7-1F58-4607-B847-77ED23E4B9B7", "versionEndExcluding": "6.18.14", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092", "versionEndExcluding": "6.19.4", "versionStartIncluding": "6.19", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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[\u00a0\u00a0 73.901376] WARNING: CPU: 0 PID: 341 at security/apparmor/match.c:316 aa_dfa_unpack+0x6cc/0x720\n[\u00a0\u00a0 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[\u00a0\u00a0 74.428977] CPU: 0 UID: 0 PID: 341 Comm: apparmor_parser Not tainted 6.18.0-rc6+ #9 NONE\n[\u00a0\u00a0 74.536543] Call Trace:\n[\u00a0\u00a0 74.568561] [<0000000000434c24>] dump_stack+0x8/0x18\n[\u00a0\u00a0 74.633757] [<0000000000476438>] __warn+0xd8/0x100\n[\u00a0\u00a0 74.696664] [<00000000004296d4>] warn_slowpath_fmt+0x34/0x74\n[\u00a0\u00a0 74.771006] [<00000000008db28c>] aa_dfa_unpack+0x6cc/0x720\n[\u00a0\u00a0 74.843062] [<00000000008e643c>] unpack_pdb+0xbc/0x7e0\n[\u00a0\u00a0 74.910545] [<00000000008e7740>] unpack_profile+0xbe0/0x1300\n[\u00a0\u00a0 74.984888] [<00000000008e82e0>] aa_unpack+0xe0/0x6a0\n[\u00a0\u00a0 75.051226] [<00000000008e3ec4>] aa_replace_profiles+0x64/0x1160\n[\u00a0\u00a0 75.130144] [<00000000008d4d90>] policy_update+0xf0/0x280\n[\u00a0\u00a0 75.201057] [<00000000008d4fc8>] profile_replace+0xa8/0x100\n[\u00a0\u00a0 75.274258] [<0000000000766bd0>] vfs_write+0x90/0x420\n[\u00a0\u00a0 75.340594] [<00000000007670cc>] ksys_write+0x4c/0xe0\n[\u00a0\u00a0 75.406932] [<0000000000767174>] sys_write+0x14/0x40\n[\u00a0\u00a0 75.472126] [<0000000000406174>] linux_sparc_syscall+0x34/0x44\n[\u00a0\u00a0 75.548802] ---[ end trace 0000000000000000 ]---\n[\u00a0\u00a0 75.609503] dfa blob stream 0xfff0000008926b96 not aligned.\n[\u00a0\u00a0 75.682695] Kernel unaligned access at TPC[8db2a8] aa_dfa_unpack+0x6e8/0x720\n\nWork around it by using the get_unaligned_xx() helpers."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nAppArmor: Permitir que apparmor maneje tablas dfa no alineadas\n\nLas tablas dfa pueden originarse desde el kernel o el espacio de usuario y la alineaci\u00f3n de 8 bytes no siempre est\u00e1 garantizada y como tal puede desencadenar accesos a memoria no alineados en varias arquitecturas. Resultando en lo siguiente\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\nSolucionarlo utilizando las funciones auxiliares get_unaligned_xx()."}], "id": "CVE-2026-46254", "lastModified": "2026-10-30T13:19:00.450", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-06-03T18:16:26.323", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/23f112bd6144e815153462e12d313ac3e7027168"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60d175ecba4d067bd3379617eb09a905de476fcc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/64802f731214a51dfe3c6c27636b3ddafd003eb0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd00629b527888a08a5222640fea045c6f64f5b5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/cded636008bde2b397a7cf63b8299d7c303aaf6a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ec737e7fdf2f0ba7b203d4ec72cc915978b10e7e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}