CVE-2026-23269— apparmor: validate DFA start states are in bounds in unpack_pdb
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-23269
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
apparmor: validate DFA start states are in bounds in unpack_pdb
Source: NVD (National Vulnerability Database)
Vulnerability Description
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 aa_dfa_next() function call in unpack_pdb() will access dfa->tables[YYTD_ID_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 aa_dfa_next+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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未验证DFA起始状态边界，可能导致越界读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-23269
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-23269
请登录查看更多情报信息。
Same Patch Batch · Linux · 2026-03-18 · 35 CVEs total
| CVE-2026-23246 | 8.8 HIGH | wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration |
| CVE-2026-23268 | 7.8 HIGH | apparmor: fix unprivileged local user can do privileged policy management |
| CVE-2026-23253 | 7.8 HIGH | media: dvb-core: fix wrong reinitialization of ringbuffer on reopen |
| CVE-2026-23248 | 7.8 HIGH | perf/core: Fix refcount bug and potential UAF in perf_mmap |
| CVE-2026-23245 | 7.8 HIGH | net/sched: act_gate: snapshot parameters with RCU on replace |
| CVE-2026-23243 | 7.8 HIGH | RDMA/umad: Reject negative data_len in ib_umad_write |
| CVE-2026-23270 | 7.8 HIGH | net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks |
| CVE-2026-23242 | 7.5 HIGH | RDMA/siw: Fix potential NULL pointer dereference in header processing |
| CVE-2025-71267 | fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST | |
| CVE-2026-23244 | nvme: fix memory allocation in nvme_pr_read_keys() | |
| CVE-2025-71266 | fs: ntfs3: check return value of indx_find to avoid infinite loop | |
| CVE-2026-23247 | tcp: secure_seq: add back ports to TS offset | |
| CVE-2026-23249 | xfs: check for deleted cursors when revalidating two btrees | |
| CVE-2026-23250 | xfs: check return value of xchk_scrub_create_subord | |
| CVE-2026-23251 | xfs: only call xf{array,blob}_destroy if we have a valid pointer | |
| CVE-2026-23252 | xfs: get rid of the xchk_xfile_*_descr calls | |
| CVE-2025-71265 | fs: ntfs3: fix infinite loop in attr_load_runs_range on inconsistent metadata | |
| CVE-2025-71268 | btrfs: fix reservation leak in some error paths when inserting inline extent | |
| CVE-2025-71269 | btrfs: do not free data reservation in fallback from inline due to -ENOSPC | |
| CVE-2025-71270 | LoongArch: Enable exception fixup for specific ADE subcode |
Showing top 20 of 35 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2026-23269
No comments yet