CVE-2026-23269

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Source
https://cve.org/CVERecord?id=CVE-2026-23269
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23269.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23269
Downstream
Related
Published
2026-03-18T17:54:42.988Z
Modified
2026-04-03T11:00:17.605110Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H CVSS Calculator
Summary
apparmor: validate DFA start states are in bounds in unpack_pdb
Details

In the Linux kernel, the following vulnerability has been resolved:

apparmor: validate DFA start states are in bounds in unpack_pdb

Start states are read from untrusted data and used as indexes into the DFA state tables. The aadfanext() function call in unpackpdb() will access dfa->tables[YYTDID_BASE][start], and if the start state exceeds the number of states in the DFA, this results in an out-of-bound read.

================================================================== BUG: KASAN: slab-out-of-bounds in aadfanext+0x2a1/0x360 Read of size 4 at addr ffff88811956fb90 by task su/1097 ...

Reject policies with out-of-bounds start states during unpacking to prevent the issue.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23269.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ad5ff3db53c68c2f12936bc74ea5dfe0af943592
Fixed
07cf6320f40ea2ccfad63728cff34ecb309d03da
Fixed
15c3eb8916e7db01cb246d04a1fe6f0fdc065b0c
Fixed
0baadb0eece2c4d939db10d3c323b4652ac79a58
Fixed
3bb7db43e32190c973d4019037cedb7895920184
Fixed
9063d7e2615f4a7ab321de6b520e23d370e58816

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23269.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.4.0
Fixed
6.6.130
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.77
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.18
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23269.json"