CVE-2026-68343
smb: client: validate DFS referral PathConsumed
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: validate DFS referral PathConsumed parse_dfs_referrals() validates that the response contains the fixed referral entry array and, on for-next, the per-referral string offsets. However, the response also contains a PathConsumed value that is later used for DFS path parsing. If a malformed response provides a PathConsumed value larger than the search name, later DFS parsing can advance beyond the end of the path. Validate PathConsumed against the search name length before storing it in the parsed referral.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 10, 2026, 1:20 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-68343
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
- Update the Linux kernel to include the patch.
- Validate PathConsumed against search name length.
- Ensure DFS path parsing stays within bounds.
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-2026-68343.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68343 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-2026-68343
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-2026-68343 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68343 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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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': '4ecce920e13ace16a5ba45efe8909946c28fb2ad', 'lessThan': '5b439f39f33ec15d319ced3b025e122346fba987', 'versionType': 'git'}, {'status': 'affected', 'version': '4ecce920e13ace16a5ba45efe8909946c28fb2ad', 'lessThan': '285bd4a5f3f156aa5869843b47a1b1380b774241', 'versionType': 'git'}, {'status': 'affected', 'version': '4ecce920e13ace16a5ba45efe8909946c28fb2ad', 'lessThan': '2fdd6d196c656b376cc251e1e9ff110b3ed522e1', 'versionType': 'git'}, {'status': 'affected', 'version': '4ecce920e13ace16a5ba45efe8909946c28fb2ad', 'lessThan': '9f88a99ed511651b2dc2177d6854b2d1b8322e75', 'versionType': 'git'}, {'status': 'affected', 'version': '4ecce920e13ace16a5ba45efe8909946c28fb2ad', 'lessThan': 'f6f5ee2aa33b350c671721b965251c42cebb962e', 'versionType': 'git'}], 'programFiles': ['fs/smb/client/misc.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.11'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.11', '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': ['fs/smb/client/misc.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: smb: client: validate DFS referral PathConsumed parse_dfs_referrals() validates that the response contains the fixed referral entry array and, on for-next, the per-referral string offsets. However, the response also contains a PathConsumed value that is later used for DFS path parsing. If a malformed response provides a PathConsumed value larger than the search name, later DFS parsing can advance beyond the end of the path. Validate PathConsumed against the search name length before storing it in the parsed referral. Added Reference https://git.kernel.org/stable/c/285bd4a5f3f156aa5869843b47a1b1380b774241 Added Reference https://git.kernel.org/stable/c/2fdd6d196c656b376cc251e1e9ff110b3ed522e1 Added Reference https://git.kernel.org/stable/c/5b439f39f33ec15d319ced3b025e122346fba987 Added Reference https://git.kernel.org/stable/c/9f88a99ed511651b2dc2177d6854b2d1b8322e75 Added Reference https://git.kernel.org/stable/c/f6f5ee2aa33b350c671721b965251c42cebb962e