CVE-2026-68401
firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit()
Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() Sashiko (locally) reports multiple out-of-bound issues in ffa_setup_and_transmit: 1) Writing ep_mem_access->reserved can write out of bounds for FFA versions < 1.2 as ffa_emad_size_get() returns 16 bytes in that case while reserved has an offset of 24. Instead of zeroing fields, memset the struct to zero first based on the FFA version. 2) Make sure there is enough size to write constituents. While at it, convert the only sizeof() in the driver that uses a type instead of variable.
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-2026-68401
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 the patched version.
- Verify the fix addresses memory corruption.
- Review and apply code changes for buffer safety.
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-2026-68401.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68401 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-2026-68401
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-2026-68401 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68401 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': '111a833dc5cbef3d05b2a796a7e23cb7f6ff2192', 'lessThan': 'cf5708c9d78c98214c62b1e5d049cd527a543b8e', 'versionType': 'git'}, {'status': 'affected', 'version': '111a833dc5cbef3d05b2a796a7e23cb7f6ff2192', 'lessThan': '27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b', 'versionType': 'git'}, {'status': 'affected', 'version': '111a833dc5cbef3d05b2a796a7e23cb7f6ff2192', 'lessThan': '3383ffb7ef937317361713ffcc21921a7848511a', 'versionType': 'git'}, {'status': 'affected', 'version': '28ebfb74fbf513e0c7cd2674d8c2400ee0220d18', 'versionType': 'git'}, {'status': 'affected', 'version': '22157f74458106c5900dbd938eb44623c22d97a0', 'versionType': 'git'}, {'status': 'affected', 'version': 'b77ec23b6df41c48e88735230e11caec56163630', 'versionType': 'git'}, {'status': 'affected', 'version': '5.15.114', 'lessThan': '5.16', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.31', 'lessThan': '6.2', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.3.5', 'lessThan': '6.4', 'versionType': 'semver'}], 'programFiles': ['drivers/firmware/arm_ffa/driver.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.4', 'versionType': 'semver'}, {'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-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/firmware/arm_ffa/driver.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() Sashiko (locally) reports multiple out-of-bound issues in ffa_setup_and_transmit: 1) Writing ep_mem_access->reserved can write out of bounds for FFA versions < 1.2 as ffa_emad_size_get() returns 16 bytes in that case while reserved has an offset of 24. Instead of zeroing fields, memset the struct to zero first based on the FFA version. 2) Make sure there is enough size to write constituents. While at it, convert the only sizeof() in the driver that uses a type instead of variable. Added Reference https://git.kernel.org/stable/c/27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b Added Reference https://git.kernel.org/stable/c/3383ffb7ef937317361713ffcc21921a7848511a Added Reference https://git.kernel.org/stable/c/cf5708c9d78c98214c62b1e5d049cd527a543b8e