CVE-2026-68354
firewire: net: Fix fragmented datagram reassembly
Description
In the Linux kernel, the following vulnerability has been resolved: firewire: net: Fix fragmented datagram reassembly fwnet_frag_new() keeps a sorted list of received fragments for a partial datagram. When a new fragment is adjacent to an existing fragment, the code checks whether the new fragment also closes the gap to the next or previous list entry. Those neighbor lookups currently assume that the current fragment always has a real next or previous fragment. At a list edge, the next or previous entry is the list head, not a struct fwnet_fragment_info. The gap checks also compare against the old edge of the current fragment instead of the edge after adding the new fragment. As a result, a fragment that bridges two existing ranges may leave two adjacent ranges unmerged, so fwnet_pd_is_complete() can miss a complete datagram. Check for the list head before looking up the neighboring fragment, and compare the neighbor against the new fragment's far edge when deciding whether to merge all three ranges. This issue was found by a static analysis checker and confirmed by manual source review.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 6:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Apply the provided patch to the Linux kernel.
- Update the Linux kernel source code.
- Recompile the Linux kernel with the fix.
- Deploy the updated kernel.
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-2026-68354.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68354 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-2026-68354
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-2026-68354 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68354 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': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': 'b7d633c7c92321be98724b1d365e8ce507f2f349', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '22e05b8ddbcf7d22c7f1598786e86635547e554d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '0177e578d7a885037b0fb82286c12e9d0360cc10', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '2a5aa4e9b89227d1a1690fb8d5b81e5f3b261999', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': 'd52a13adbb8ccbab99cd3bad36804e87d8b5c052', 'versionType': 'git'}], 'programFiles': ['drivers/firewire/net.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.31'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.31', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/firewire/net.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': 'b7d633c7c92321be98724b1d365e8ce507f2f349', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '22e05b8ddbcf7d22c7f1598786e86635547e554d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '0177e578d7a885037b0fb82286c12e9d0360cc10', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '2a5aa4e9b89227d1a1690fb8d5b81e5f3b261999', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': 'd52a13adbb8ccbab99cd3bad36804e87d8b5c052', 'versionType': 'git'}], 'programFiles': ['drivers/firewire/net.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.31'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.31', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/firewire/net.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 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': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': 'b7d633c7c92321be98724b1d365e8ce507f2f349', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '22e05b8ddbcf7d22c7f1598786e86635547e554d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '0177e578d7a885037b0fb82286c12e9d0360cc10', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': '2a5aa4e9b89227d1a1690fb8d5b81e5f3b261999', 'versionType': 'git'}, {'status': 'affected', 'version': 'c76acec6d55107b652a37c90b36c00bc8b04dabb', 'lessThan': 'd52a13adbb8ccbab99cd3bad36804e87d8b5c052', 'versionType': 'git'}], 'programFiles': ['drivers/firewire/net.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.31'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.31', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/firewire/net.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: firewire: net: Fix fragmented datagram reassembly fwnet_frag_new() keeps a sorted list of received fragments for a partial datagram. When a new fragment is adjacent to an existing fragment, the code checks whether the new fragment also closes the gap to the next or previous list entry. Those neighbor lookups currently assume that the current fragment always has a real next or previous fragment. At a list edge, the next or previous entry is the list head, not a struct fwnet_fragment_info. The gap checks also compare against the old edge of the current fragment instead of the edge after adding the new fragment. As a result, a fragment that bridges two existing ranges may leave two adjacent ranges unmerged, so fwnet_pd_is_complete() can miss a complete datagram. Check for the list head before looking up the neighboring fragment, and compare the neighbor against the new fragment's far edge when deciding whether to merge all three ranges. This issue was found by a static analysis checker and confirmed by manual source review. Added Reference https://git.kernel.org/stable/c/0177e578d7a885037b0fb82286c12e9d0360cc10 Added Reference https://git.kernel.org/stable/c/22e05b8ddbcf7d22c7f1598786e86635547e554d Added Reference https://git.kernel.org/stable/c/2a5aa4e9b89227d1a1690fb8d5b81e5f3b261999 Added Reference https://git.kernel.org/stable/c/b7d633c7c92321be98724b1d365e8ce507f2f349 Added Reference https://git.kernel.org/stable/c/d52a13adbb8ccbab99cd3bad36804e87d8b5c052