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9.8
CRITICAL CVSS 3.1
CVE-2026-64355
bpf: Reject fragmented frames in devmap
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames in devmap Devmap broadcast redirects clone the packet for all but the last destination. For native XDP, that clone path copies only the linear xdp_frame data, while fragmented frames keep skb_shared_info in tailroom outside the linear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but without valid frag metadata, and the later free path can interpret uninitialized tail data as skb_shared_info, leading to an out-of-bounds access during frame return. Reject fragmented native XDP frames in dev_map_enqueue_clone(). Add the same restriction to the generic XDP clone path in dev_map_redirect_clone(). Generic XDP represents fragmented packets as nonlinear skbs, and rejecting them here keeps clone-based broadcast support aligned between native and generic XDP.

Details
INFO

Published Date :

July 25, 2026, 10:17 a.m.

Last Modified :

Aug. 17, 2026, 5:17 a.m.

Remotely Exploit :

Yes !

Source :

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

The following products are affected by CVE-2026-64355 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
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 CRITICAL 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Reject fragmented native XDP frames and align clone-based broadcast support.
  • Apply the Linux kernel patch.
  • Reject fragmented frames in dev_map_enqueue_clone.
  • Restrict fragmented frames in dev_map_redirect_clone.
  • Update to a fixed kernel version.
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-2026-64355.

URL Resource
https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf
https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466
https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be
https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe
https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656
https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399
https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-64355 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-2026-64355 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-2026-64355 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-2026-64355 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': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '47baddc856ae7e93a565dd9deeb797999b179466', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '07a4c11ee8ef4abcb39d922e9e410ae269671cdf', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'bccbab36ff228e0825eb85d9b0f9b8434cd0a399', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'c5b4f5efcb55c1af3fe44ff712d31b7fb098a831', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'a9bb2d9c798cb62a4050a991c27b752770c33afe', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '51d07c12ca411e692c424ecdabf077f1e61a61be', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'aa496720618f1a6054f1c870bf10b4f6c99bf656', 'versionType': 'git'}], 'programFiles': ['kernel/bpf/devmap.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'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': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', '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/devmap.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '47baddc856ae7e93a565dd9deeb797999b179466', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '07a4c11ee8ef4abcb39d922e9e410ae269671cdf', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'bccbab36ff228e0825eb85d9b0f9b8434cd0a399', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'c5b4f5efcb55c1af3fe44ff712d31b7fb098a831', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'a9bb2d9c798cb62a4050a991c27b752770c33afe', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '51d07c12ca411e692c424ecdabf077f1e61a61be', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'aa496720618f1a6054f1c870bf10b4f6c99bf656', 'versionType': 'git'}], 'programFiles': ['kernel/bpf/devmap.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'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': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', '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/devmap.c'], 'defaultStatus': 'affected'}]
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jul. 27, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • 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': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '47baddc856ae7e93a565dd9deeb797999b179466', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '07a4c11ee8ef4abcb39d922e9e410ae269671cdf', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'bccbab36ff228e0825eb85d9b0f9b8434cd0a399', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'c5b4f5efcb55c1af3fe44ff712d31b7fb098a831', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'a9bb2d9c798cb62a4050a991c27b752770c33afe', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': '51d07c12ca411e692c424ecdabf077f1e61a61be', 'versionType': 'git'}, {'status': 'affected', 'version': 'e624d4ed4aa8cc3c69d1359b0aaea539203ed266', 'lessThan': 'aa496720618f1a6054f1c870bf10b4f6c99bf656', 'versionType': 'git'}], 'programFiles': ['kernel/bpf/devmap.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'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': '6.12.96', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.39', '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/devmap.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: bpf: Reject fragmented frames in devmap Devmap broadcast redirects clone the packet for all but the last destination. For native XDP, that clone path copies only the linear xdp_frame data, while fragmented frames keep skb_shared_info in tailroom outside the linear area. Cloning such a frame leaves XDP_FLAGS_HAS_FRAGS set but without valid frag metadata, and the later free path can interpret uninitialized tail data as skb_shared_info, leading to an out-of-bounds access during frame return. Reject fragmented native XDP frames in dev_map_enqueue_clone(). Add the same restriction to the generic XDP clone path in dev_map_redirect_clone(). Generic XDP represents fragmented packets as nonlinear skbs, and rejecting them here keeps clone-based broadcast support aligned between native and generic XDP.
    Added Reference https://git.kernel.org/stable/c/07a4c11ee8ef4abcb39d922e9e410ae269671cdf
    Added Reference https://git.kernel.org/stable/c/47baddc856ae7e93a565dd9deeb797999b179466
    Added Reference https://git.kernel.org/stable/c/51d07c12ca411e692c424ecdabf077f1e61a61be
    Added Reference https://git.kernel.org/stable/c/a9bb2d9c798cb62a4050a991c27b752770c33afe
    Added Reference https://git.kernel.org/stable/c/aa496720618f1a6054f1c870bf10b4f6c99bf656
    Added Reference https://git.kernel.org/stable/c/bccbab36ff228e0825eb85d9b0f9b8434cd0a399
    Added Reference https://git.kernel.org/stable/c/c5b4f5efcb55c1af3fe44ff712d31b7fb098a831
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
Vulnerability Scoring Details
Base CVSS Score: 9.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact