AppArmor: Allow apparmor to handle unaligned dfa tables
In the Linux kernel, the following vulnerability has been resolved: AppArmor: Allow apparmor to handle unaligned dfa tables The dfa tables can originate from kernel or userspace and 8-byte alignment isn't always guaranteed and as such may trigger unaligned memory accesses on various architectures. Resulting in the following [ 73.901376] WARNING: CPU: 0 PID: 341 at security/apparmor/match.c:316 aa_dfa_unpack+0x6cc/0x720 [ 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 sd_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 [ 74.428977] CPU: 0 UID: 0 PID: 341 Comm: apparmor_parser Not tainted 6.18.0-rc6+ #9 NONE [ 74.536543] Call Trace: [ 74.568561] [<0000000000434c24>] dump_stack+0x8/0x18 [ 74.633757] [<0000000000476438>] __warn+0xd8/0x100 [ 74.696664] [<00000000004296d4>] warn_slowpath_fmt+0x34/0x74 [ 74.771006] [<00000000008db28c>] aa_dfa_unpack+0x6cc/0x720 [ 74.843062] [<00000000008e643c>] unpack_pdb+0xbc/0x7e0 [ 74.910545] [<00000000008e7740>] unpack_profile+0xbe0/0x1300 [ 74.984888] [<00000000008e82e0>] aa_unpack+0xe0/0x6a0 [ 75.051226] [<00000000008e3ec4>] aa_replace_profiles+0x64/0x1160 [ 75.130144] [<00000000008d4d90>] policy_update+0xf0/0x280 [ 75.201057] [<00000000008d4fc8>] profile_replace+0xa8/0x100 [ 75.274258] [<00
CVE-2026-46254
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-46254
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
"lessThan": "bd00629b527888a08a5222640fea045c6f64f5b5",
"versionType": "git"
},
{
"status": "affected",
"version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
"lessThan": "ec737e7fdf2f0ba7b203d4ec72cc915978b10e7e",
"versionType": "git"
},
{
"status": "affected",
"version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
"lessThan": "23f112bd6144e815153462e12d313ac3e7027168",
"versionType": "git"
},
{
"status": "affected",
"version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
"lessThan": "cded636008bde2b397a7cf63b8299d7c303aaf6a",
"versionType": "git"
},
{
"status": "affected",
"version": "e6e8bf418850d7958311a96ccfb594f2bcc8313e",
"lessThan": "64802f731214a51dfe3c6c27636b3ddafd003eb0",
"versionType": "git"
}
],
"programFiles": [
"security/apparmor/match.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.14",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.4",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"security/apparmor/match.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-46254
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #46338 · Revision 1
- Added to Heist Feed
- Publisher date