CVE-2026-64353
bpf: Keep dynamic inner array lookups nullable
Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Keep dynamic inner array lookups nullable An ARRAY_OF_MAPS can use an array created with BPF_F_INNER_MAP as its inner map template. A concrete inner array with a different max_entries value can then replace the template. After a successful outer map lookup, the verifier represents the resulting map pointer using the inner map template. Const-key lookup nullness elision consequently uses the template max_entries even though the runtime helper uses the concrete inner map max_entries. Do not elide lookup result nullness for maps marked with BPF_F_INNER_MAP, because the template max_entries does not prove that the key is in bounds for the concrete runtime map.
INFO
Published Date :
July 25, 2026, 10:17 a.m.
Last Modified :
Aug. 17, 2026, 5:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the Linux kernel.
- Apply the patch for bpf: Keep dynamic inner array lookups nullable.
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-2026-64353.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64353 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-2026-64353
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-2026-64353 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64353 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.
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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': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': '0b92ad64d6e4bde85e6b9888404f9a7a2b65d269', 'versionType': 'git'}, {'status': 'affected', 'version': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': 'd57db0d975053e01410c54e708a85b6d32ef2ebd', 'versionType': 'git'}, {'status': 'affected', 'version': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': '53040a81ae57cdca8af8ac36fe4e661730cf7c6b', 'versionType': 'git'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': '0b92ad64d6e4bde85e6b9888404f9a7a2b65d269', 'versionType': 'git'}, {'status': 'affected', 'version': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': 'd57db0d975053e01410c54e708a85b6d32ef2ebd', 'versionType': 'git'}, {'status': 'affected', 'version': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': '53040a81ae57cdca8af8ac36fe4e661730cf7c6b', 'versionType': 'git'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 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': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': '0b92ad64d6e4bde85e6b9888404f9a7a2b65d269', 'versionType': 'git'}, {'status': 'affected', 'version': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': 'd57db0d975053e01410c54e708a85b6d32ef2ebd', 'versionType': 'git'}, {'status': 'affected', 'version': 'd2102f2f5d75a84dbab6ff890359f0bd4a18ca22', 'lessThan': '53040a81ae57cdca8af8ac36fe4e661730cf7c6b', 'versionType': 'git'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.4', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/bpf/verifier.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Keep dynamic inner array lookups nullable An ARRAY_OF_MAPS can use an array created with BPF_F_INNER_MAP as its inner map template. A concrete inner array with a different max_entries value can then replace the template. After a successful outer map lookup, the verifier represents the resulting map pointer using the inner map template. Const-key lookup nullness elision consequently uses the template max_entries even though the runtime helper uses the concrete inner map max_entries. Do not elide lookup result nullness for maps marked with BPF_F_INNER_MAP, because the template max_entries does not prove that the key is in bounds for the concrete runtime map. Added Reference https://git.kernel.org/stable/c/0b92ad64d6e4bde85e6b9888404f9a7a2b65d269 Added Reference https://git.kernel.org/stable/c/53040a81ae57cdca8af8ac36fe4e661730cf7c6b Added Reference https://git.kernel.org/stable/c/d57db0d975053e01410c54e708a85b6d32ef2ebd