Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-23408— apparmor: Fix double free of ns_name in aa_replace_profiles()

CVSS 7.8 · High EPSS 0.01% · P3
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-23408

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: Fix double free of ns_name in aa_replace_profiles()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix double free of ns_name in aa_replace_profiles() if ns_name is NULL after 1071 error = aa_unpack(udata, &lh, &ns_name); and if ent->ns_name contains an ns_name in 1089 } else if (ent->ns_name) { then ns_name is assigned the ent->ns_name 1095 ns_name = ent->ns_name; however ent->ns_name is freed at 1262 aa_load_ent_free(ent); and then again when freeing ns_name at 1270 kfree(ns_name); Fix this by NULLing out ent->ns_name after it is transferred to ns_name ")
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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aa_replace_profiles函数存在双重释放。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 145a0ef21c8e944957f58e2c8ffcd8a10f46266a ~ c6347a2116ecccb8fd9ee4ebc75ae41d1d7ef689 -
LinuxLinux 5.5 -

II. Public POCs for CVE-2026-23408

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-23408

请登录查看更多情报信息。

Same Patch Batch · Linux · 2026-04-01 · 11 CVEs total

CVE-2026-234117.8 HIGHapparmor: fix race between freeing data and fs accessing it
CVE-2026-234107.8 HIGHapparmor: fix race on rawdata dereference
CVE-2026-234077.8 HIGHapparmor: fix missing bounds check on DEFAULT table in verify_dfa()
CVE-2026-234067.8 HIGHapparmor: fix side-effect bug in match_char() macro usage
CVE-2026-23409apparmor: fix differential encoding verification
CVE-2026-23405apparmor: fix: limit the number of levels of policy namespaces
CVE-2026-23404apparmor: replace recursive profile removal with iterative approach
CVE-2026-23403apparmor: fix memory leak in verify_header
CVE-2026-23402KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE
CVE-2026-23401KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23408

No comments yet

Leave a comment