CVE-2026-68355
wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get()
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get() When the first entry in msdu_details has a zero buffer address, the code accesses msdu_details[i - 1] with i == 0, causing a buffer underflow. Fix similarly to ath12k_wifi7_hal_rx_msdu_list_get() by adding a separate check for i == 0 before the main condition to prevent the out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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
Solution
- Update the Linux kernel to a patched version.
- Verify the patch is applied to the ath11k driver.
- Reboot the system after applying updates.
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-2026-68355.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68355 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-2026-68355
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-2026-68355 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68355 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': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '69a6a4f60b2da92c0bdfd9264b8ffe053f51f52a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '904367381a922aa2dc3e8bd2488e6c9180516c7a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': 'a154ca3c441a67d36b3a9ea63a4f11b06abe6223', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '7f11e70629650ff6ea140984e5ce188b775b2683', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/ath/ath11k/dp_rx.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', '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/net/wireless/ath/ath11k/dp_rx.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '69a6a4f60b2da92c0bdfd9264b8ffe053f51f52a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '904367381a922aa2dc3e8bd2488e6c9180516c7a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': 'a154ca3c441a67d36b3a9ea63a4f11b06abe6223', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '7f11e70629650ff6ea140984e5ce188b775b2683', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/ath/ath11k/dp_rx.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', '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/net/wireless/ath/ath11k/dp_rx.c'], 'defaultStatus': 'affected'}] -
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': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '69a6a4f60b2da92c0bdfd9264b8ffe053f51f52a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '904367381a922aa2dc3e8bd2488e6c9180516c7a', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': 'a154ca3c441a67d36b3a9ea63a4f11b06abe6223', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5', 'versionType': 'git'}, {'status': 'affected', 'version': 'd5c65159f2895379e11ca13f62feabe93278985d', 'lessThan': '7f11e70629650ff6ea140984e5ce188b775b2683', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/ath/ath11k/dp_rx.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', '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/net/wireless/ath/ath11k/dp_rx.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get() When the first entry in msdu_details has a zero buffer address, the code accesses msdu_details[i - 1] with i == 0, causing a buffer underflow. Fix similarly to ath12k_wifi7_hal_rx_msdu_list_get() by adding a separate check for i == 0 before the main condition to prevent the out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with SVACE. Added Reference https://git.kernel.org/stable/c/69a6a4f60b2da92c0bdfd9264b8ffe053f51f52a Added Reference https://git.kernel.org/stable/c/725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5 Added Reference https://git.kernel.org/stable/c/7f11e70629650ff6ea140984e5ce188b775b2683 Added Reference https://git.kernel.org/stable/c/904367381a922aa2dc3e8bd2488e6c9180516c7a Added Reference https://git.kernel.org/stable/c/a154ca3c441a67d36b3a9ea63a4f11b06abe6223