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CVE-2026-47329— Incorrect validation of field size in Ubuntu Linux AppArmor notification responses

CVSS 3.3 · Low EPSS 0.02% · P5

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
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I. Basic Information for CVE-2026-47329

Vulnerability Information
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Vulnerability Title
Incorrect validation of field size in Ubuntu Linux AppArmor notification responses
Source: NVD (National Vulnerability Database)
Vulnerability Description
Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches which fail to validate invalid sizes of the name field in AppAmor notification responses. The bug can be triggered by an unprivileged local user and could result in handling of crafted responses.
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:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1284
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，该漏洞源于未能验证AppArmor通知响应中名称字段的无效大小，可能导致处理特制响应。
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-2026-47329

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III. Intelligence Information for CVE-2026-47329

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Patches & Fixes for CVE-2026-47329 (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-2026-473286.1 MEDIUMInvalid pointer deallocation 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

IV. Related Vulnerabilities

Same product: Ubuntu Linux
Same vendor: Canonical
Same weakness: CWE-1284

V. Comments for CVE-2026-47329

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