7.8
HIGH
CVSS 3.1
CVE-2026-72459
apparmor: aa_label_alloc use aa_label_free on alloc failure
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: apparmor: aa_label_alloc use aa_label_free on alloc failure aa_label_alloc() allocates a secid before allocating or taking the label proxy. If the later proxy step fails, the error path only freed the label memory, leaking any resources initialized by aa_label_init(). Use aa_label_free() on the failure path so partially initialized labels release their secid and other label resources before the backing memory is freed.
Details
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Fix memory leak by freeing initialized labels on allocation failure.
- Ensure aa_label_free is called on allocation failure paths.
- Release secid and other label resources before freeing memory.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72459.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72459 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72459
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72459 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72459 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'b14fbacad77d64594228983ec20d61a224f3f491', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'b5a9da5d36162d34db0f36abb15420e295176793', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '7cb69e109610bba500e1ecb870f7988a4717208a', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'cc2192899d502e3321e60cf1e91421e7309d089c', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'bf310b044e85d4de670c94295c5d8e4c5bc5e7bc', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '6d91479174240f39e9edea250d95fa08c678a207', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '654fe7505dc6889724d4094fa64f89991afabfc3', 'versionType': 'git'}], 'programFiles': ['security/apparmor/label.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['security/apparmor/label.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'b14fbacad77d64594228983ec20d61a224f3f491', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'b5a9da5d36162d34db0f36abb15420e295176793', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '7cb69e109610bba500e1ecb870f7988a4717208a', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'cc2192899d502e3321e60cf1e91421e7309d089c', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'bf310b044e85d4de670c94295c5d8e4c5bc5e7bc', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '6d91479174240f39e9edea250d95fa08c678a207', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '654fe7505dc6889724d4094fa64f89991afabfc3', 'versionType': 'git'}], 'programFiles': ['security/apparmor/label.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['security/apparmor/label.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'b14fbacad77d64594228983ec20d61a224f3f491', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'b5a9da5d36162d34db0f36abb15420e295176793', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '7cb69e109610bba500e1ecb870f7988a4717208a', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'cc2192899d502e3321e60cf1e91421e7309d089c', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'bf310b044e85d4de670c94295c5d8e4c5bc5e7bc', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': 'ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '6d91479174240f39e9edea250d95fa08c678a207', 'versionType': 'git'}, {'status': 'affected', 'version': 'f1bd904175e8190ce14aedee37e207ab51fe3b30', 'lessThan': '654fe7505dc6889724d4094fa64f89991afabfc3', 'versionType': 'git'}], 'programFiles': ['security/apparmor/label.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['security/apparmor/label.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: apparmor: aa_label_alloc use aa_label_free on alloc failure aa_label_alloc() allocates a secid before allocating or taking the label proxy. If the later proxy step fails, the error path only freed the label memory, leaking any resources initialized by aa_label_init(). Use aa_label_free() on the failure path so partially initialized labels release their secid and other label resources before the backing memory is freed. Added Reference https://git.kernel.org/stable/c/654fe7505dc6889724d4094fa64f89991afabfc3 Added Reference https://git.kernel.org/stable/c/6d91479174240f39e9edea250d95fa08c678a207 Added Reference https://git.kernel.org/stable/c/7cb69e109610bba500e1ecb870f7988a4717208a Added Reference https://git.kernel.org/stable/c/ae02e603c0b39b29f3ce6fe3efe01b286af1a2a4 Added Reference https://git.kernel.org/stable/c/b14fbacad77d64594228983ec20d61a224f3f491 Added Reference https://git.kernel.org/stable/c/b5a9da5d36162d34db0f36abb15420e295176793 Added Reference https://git.kernel.org/stable/c/bf310b044e85d4de670c94295c5d8e4c5bc5e7bc Added Reference https://git.kernel.org/stable/c/cc2192899d502e3321e60cf1e91421e7309d089c
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.