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

Goal: 1000 CNY · Raised: 1310 CNY

100%
Buy Us a Coffee

CVE-2026-47328— Invalid pointer deallocation in Ubuntu Linux AppArmor notification handling

CVSS 6.1 · Medium EPSS 0.01% · P2

Affected Version Matrix 3

VendorProductVersion RangeStatus
CanonicalUbuntu Linux6.8.0< 6.8.0-124.124affected
6.17.0< 6.17.0-35.35affected
7.0.0< 7.0.0-22.22affected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-47328

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Invalid pointer deallocation in Ubuntu Linux AppArmor notification handling
Source: NVD (National Vulnerability Database)
Vulnerability Description
Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly attempt to free a pointer which was not previously kmalloc()d, while at the same time leaking allocated memory. The bug can be triggered by an unprivileged local user and can result in the corruption of slab metadata and could lead to resource exhaustion.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放并不在堆上的内存
Source: NVD (National Vulnerability Database)
Vulnerability Title
Canonical Ubuntu Linux 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Canonical Ubuntu Linux是英国科能软件（Canonical）公司的一套Linux操作系统。 Canonical Ubuntu Linux 6.8版本、6.17版本和7.0版本存在安全漏洞，该漏洞源于错误尝试释放未kmalloc的指针并同时泄漏内存，可能导致slab元数据损坏和资源耗尽。
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
CanonicalUbuntu Linux 6.8.0 ~ 6.8.0-124.124 -

II. Public POCs for CVE-2026-47328

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-47328

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-47328 (1)

Same Patch Batch · Canonical · 2026-05-28 · 14 CVEs total

CVE-2026-492388.4 HIGHSFTP Server VM Escape in Canonical Multipass
CVE-2026-492377.8 HIGHLocal Privilege Escalation in Canonical Multipass
CVE-2026-473317.8 HIGHUse-after-free in Ubuntu Linux AppArmor notification handling
CVE-2026-473337.8 HIGHOut-of-bounds read in Ubuntu Linux AppArmor notification handling
CVE-2026-473325.5 MEDIUMOut-of-bounds read in Ubuntu Linux AppArmor notification handling
CVE-2026-473345.5 MEDIUMDeadlock or kernel panic in Ubuntu Linux AppArmor notification handling
CVE-2026-473265.5 MEDIUMMemory leak in Ubuntu Linux AppArmor large notification response allocation
CVE-2026-473355.5 MEDIUMNULL pointer dereference in Ubuntu Linux AppArmor notification handling
CVE-2026-473363.3 LOWUse of uninitialized value in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation rules
CVE-2026-473273.3 LOWNULL pointer dereference in Ubuntu Linux AppArmor notification handling
CVE-2026-473373.3 LOWNULL pointer dereference in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation
CVE-2026-473303.3 LOWUse of uninitialized value in Ubuntu Linux AppArmor notification handling
CVE-2026-473293.3 LOWIncorrect validation of field size in Ubuntu Linux AppArmor notification responses

IV. Related Vulnerabilities

Same product: Ubuntu Linux
Same vendor: Canonical
Same weakness: CWE-590

V. Comments for CVE-2026-47328

No comments yet

Leave a comment