CVE-2026-72450
xfrm: validate selector family and prefixlen during match
Description
In the Linux kernel, the following vulnerability has been resolved: xfrm: validate selector family and prefixlen during match syzbot reported a shift-out-of-bounds in xfrm_selector_match() due to AF_UNSPEC selector with large prefixlen (e.g. 128) matched against IPv4 flow (when XFRM_STATE_AF_UNSPEC is set). Fix this by: - Rejecting mismatched families in xfrm_selector_match. - Returning false in addr4_match if prefixlen > 32. - Returning false in addr_match if prefixlen > 128 (prevents overflow).
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 15, 2026, 6:22 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-72450
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.
No affected product recoded yet
Solution
- Reject mismatched families in xfrm_selector_match.
- Return false in addr4_match if prefixlen > 32.
- Return false in addr_match if prefixlen > 128.
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-2026-72450.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72450 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-2026-72450
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-2026-72450 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72450 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.
-
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': '8df5cd51fd70c33aa1776e5cbcd82b0a86649d73', 'lessThan': '87a5bbccc7ff4edb3f42fea387124237d2ba91ee', 'versionType': 'git'}, {'status': 'affected', 'version': '2d08a6c31c65f23db71a5385ee9cf9d8f9a67a71', 'lessThan': 'bd7f202cf77556cff59f68dc30e4cdf40cb6e33b', 'versionType': 'git'}, {'status': 'affected', 'version': 'bce1afaa212ec380bf971614f70909a27882b862', 'lessThan': 'a3968ad4195d72c8fddcc6c0ef39da95ac98711a', 'versionType': 'git'}, {'status': 'affected', 'version': '7d9868180bd1e4cf37e7c5067362658971162366', 'lessThan': 'efa9e3b9f3dea2e1ea4c7edf4edc863faef85986', 'versionType': 'git'}, {'status': 'affected', 'version': '3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563', 'lessThan': '78783fefdc8f36879b1a17efa0d3195ea5f2dc5f', 'versionType': 'git'}, {'status': 'affected', 'version': '3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563', 'lessThan': '6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe', 'versionType': 'git'}, {'status': 'affected', 'version': '3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563', 'lessThan': '5a03a2ee17e8259dde631ed84fd8322db06cb2ae', 'versionType': 'git'}, {'status': 'affected', 'version': '3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563', 'lessThan': '40f0b1047918539f0b0f795ac65e35336b4c2c78', 'versionType': 'git'}, {'status': 'affected', 'version': 'f31398570acf0f0804c644006f7bfa9067106b0a', 'versionType': 'git'}, {'status': 'affected', 'version': '401ad99a5ae7180dd9449eac104cb755f442e7f3', 'versionType': 'git'}, {'status': 'affected', 'version': 'e68dd80ba498265d2266b12dc3459164f4ff0c4a', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.229', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.170', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.115', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.6.59', 'lessThan': '6.6.145', 'versionType': 'semver'}, {'status': 'affected', 'version': '4.19.323', 'lessThan': '4.20', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.285', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.11.6', 'lessThan': '6.12', 'versionType': 'semver'}], 'programFiles': ['include/net/xfrm.h', 'net/xfrm/xfrm_policy.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.12'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.12', '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': ['include/net/xfrm.h', 'net/xfrm/xfrm_policy.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: xfrm: validate selector family and prefixlen during match syzbot reported a shift-out-of-bounds in xfrm_selector_match() due to AF_UNSPEC selector with large prefixlen (e.g. 128) matched against IPv4 flow (when XFRM_STATE_AF_UNSPEC is set). Fix this by: - Rejecting mismatched families in xfrm_selector_match. - Returning false in addr4_match if prefixlen > 32. - Returning false in addr_match if prefixlen > 128 (prevents overflow). Added Reference https://git.kernel.org/stable/c/40f0b1047918539f0b0f795ac65e35336b4c2c78 Added Reference https://git.kernel.org/stable/c/5a03a2ee17e8259dde631ed84fd8322db06cb2ae Added Reference https://git.kernel.org/stable/c/6d99379c58f7f1c6ab2cc7aba01a4f52d71adcfe Added Reference https://git.kernel.org/stable/c/78783fefdc8f36879b1a17efa0d3195ea5f2dc5f Added Reference https://git.kernel.org/stable/c/87a5bbccc7ff4edb3f42fea387124237d2ba91ee Added Reference https://git.kernel.org/stable/c/a3968ad4195d72c8fddcc6c0ef39da95ac98711a Added Reference https://git.kernel.org/stable/c/bd7f202cf77556cff59f68dc30e4cdf40cb6e33b Added Reference https://git.kernel.org/stable/c/efa9e3b9f3dea2e1ea4c7edf4edc863faef85986