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CVE-2026-72228
batman-adv: frag: fix primary_if leak on failed linearization
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: fix primary_if leak on failed linearization If the skb has a frag_list, it must be linearized before it can be split using skb_split(). But when this step failed, it must not only free the skb but also take care of the reference to the already found primary_if.

Details
INFO

Published Date :

Aug. 15, 2026, 6:21 a.m.

Last Modified :

Aug. 17, 2026, 6:18 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72228 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
Address a reference leak in batman-adv's fragmentation handler by freeing the skb and its primary_if.
  • Apply the patch to fix the primary_if reference leak.
  • Ensure skbs are properly freed after linearization failure.
  • Verify the integrity of the fragmentation process.
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-2026-72228.

URL Resource
https://git.kernel.org/stable/c/353d2c1d5492e53ae34f490a84494124dc3d3531
https://git.kernel.org/stable/c/4f3bf293f7662500142234ae6f23725953690bc9
https://git.kernel.org/stable/c/777a88256d6f70672116e53400659cc417e1feaa
https://git.kernel.org/stable/c/a90f4fff9025371bce5371daa610af957de8dd6a
https://git.kernel.org/stable/c/c1b28432fd6345e0d2308f39c507ed5750c265d2
https://git.kernel.org/stable/c/d2148aeee93197ccf821114489775132f28eebf5
https://git.kernel.org/stable/c/db3c700826e8126fbdaa83468a9c4ee4ee65319f
https://git.kernel.org/stable/c/e59b1960f71521ce4eb4397c4e82f5285601ab57
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72228 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-2026-72228 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-2026-72228 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72228 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
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'a6a73781b460c4fe2cf2c40400ac91dfddb353fa', 'lessThan': 'e59b1960f71521ce4eb4397c4e82f5285601ab57', 'versionType': 'git'}, {'status': 'affected', 'version': '8f37aad74f46dd5d8b95fac17804b75f77931fa9', 'lessThan': 'c1b28432fd6345e0d2308f39c507ed5750c265d2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '4f3bf293f7662500142234ae6f23725953690bc9', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'd2148aeee93197ccf821114489775132f28eebf5', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'db3c700826e8126fbdaa83468a9c4ee4ee65319f', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'a90f4fff9025371bce5371daa610af957de8dd6a', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '777a88256d6f70672116e53400659cc417e1feaa', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '353d2c1d5492e53ae34f490a84494124dc3d3531', 'versionType': 'git'}, {'status': 'affected', 'version': '5ed837a7e05bcba72bdcd86b12547ea5b796cc01', 'versionType': 'git'}, {'status': 'affected', 'version': '5853618b022b8ed287a278540303e1b283d6f247', 'versionType': 'git'}, {'status': 'affected', 'version': '3915341a935f3397f65a01580dc3bfc4cdf53d14', 'versionType': 'git'}, {'status': 'affected', 'version': 'bea410635595f8efbec90c948da04c3613ef87ea', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.117', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.41', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.14.280', 'lessThan': '4.15', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.19.244', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.195', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.17.9', 'lessThan': '5.18', 'versionType': 'semver'}], 'programFiles': ['net/batman-adv/fragmentation.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', '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-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/fragmentation.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'a6a73781b460c4fe2cf2c40400ac91dfddb353fa', 'lessThan': 'e59b1960f71521ce4eb4397c4e82f5285601ab57', 'versionType': 'git'}, {'status': 'affected', 'version': '8f37aad74f46dd5d8b95fac17804b75f77931fa9', 'lessThan': 'c1b28432fd6345e0d2308f39c507ed5750c265d2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '4f3bf293f7662500142234ae6f23725953690bc9', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'd2148aeee93197ccf821114489775132f28eebf5', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'db3c700826e8126fbdaa83468a9c4ee4ee65319f', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'a90f4fff9025371bce5371daa610af957de8dd6a', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '777a88256d6f70672116e53400659cc417e1feaa', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '353d2c1d5492e53ae34f490a84494124dc3d3531', 'versionType': 'git'}, {'status': 'affected', 'version': '5ed837a7e05bcba72bdcd86b12547ea5b796cc01', 'versionType': 'git'}, {'status': 'affected', 'version': '5853618b022b8ed287a278540303e1b283d6f247', 'versionType': 'git'}, {'status': 'affected', 'version': '3915341a935f3397f65a01580dc3bfc4cdf53d14', 'versionType': 'git'}, {'status': 'affected', 'version': 'bea410635595f8efbec90c948da04c3613ef87ea', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.117', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.41', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.14.280', 'lessThan': '4.15', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.19.244', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.195', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.17.9', 'lessThan': '5.18', 'versionType': 'semver'}], 'programFiles': ['net/batman-adv/fragmentation.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', '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': ['net/batman-adv/fragmentation.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': 'a6a73781b460c4fe2cf2c40400ac91dfddb353fa', 'lessThan': 'e59b1960f71521ce4eb4397c4e82f5285601ab57', 'versionType': 'git'}, {'status': 'affected', 'version': '8f37aad74f46dd5d8b95fac17804b75f77931fa9', 'lessThan': 'c1b28432fd6345e0d2308f39c507ed5750c265d2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '4f3bf293f7662500142234ae6f23725953690bc9', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'd2148aeee93197ccf821114489775132f28eebf5', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'db3c700826e8126fbdaa83468a9c4ee4ee65319f', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': 'a90f4fff9025371bce5371daa610af957de8dd6a', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '777a88256d6f70672116e53400659cc417e1feaa', 'versionType': 'git'}, {'status': 'affected', 'version': 'a063f2fba3fa633a599253b62561051ac185fa99', 'lessThan': '353d2c1d5492e53ae34f490a84494124dc3d3531', 'versionType': 'git'}, {'status': 'affected', 'version': '5ed837a7e05bcba72bdcd86b12547ea5b796cc01', 'versionType': 'git'}, {'status': 'affected', 'version': '5853618b022b8ed287a278540303e1b283d6f247', 'versionType': 'git'}, {'status': 'affected', 'version': '3915341a935f3397f65a01580dc3bfc4cdf53d14', 'versionType': 'git'}, {'status': 'affected', 'version': 'bea410635595f8efbec90c948da04c3613ef87ea', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.117', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.41', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.14.280', 'lessThan': '4.15', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.19.244', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.195', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.17.9', 'lessThan': '5.18', 'versionType': 'semver'}], 'programFiles': ['net/batman-adv/fragmentation.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.18', '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-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/fragmentation.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: fix primary_if leak on failed linearization If the skb has a frag_list, it must be linearized before it can be split using skb_split(). But when this step failed, it must not only free the skb but also take care of the reference to the already found primary_if.
    Added Reference https://git.kernel.org/stable/c/353d2c1d5492e53ae34f490a84494124dc3d3531
    Added Reference https://git.kernel.org/stable/c/4f3bf293f7662500142234ae6f23725953690bc9
    Added Reference https://git.kernel.org/stable/c/777a88256d6f70672116e53400659cc417e1feaa
    Added Reference https://git.kernel.org/stable/c/a90f4fff9025371bce5371daa610af957de8dd6a
    Added Reference https://git.kernel.org/stable/c/c1b28432fd6345e0d2308f39c507ed5750c265d2
    Added Reference https://git.kernel.org/stable/c/d2148aeee93197ccf821114489775132f28eebf5
    Added Reference https://git.kernel.org/stable/c/db3c700826e8126fbdaa83468a9c4ee4ee65319f
    Added Reference https://git.kernel.org/stable/c/e59b1960f71521ce4eb4397c4e82f5285601ab57
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.
CVSS
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