CVE-2026-68199
wifi: ath6kl: fix OOB access from firmware ADDBA window size
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB access from firmware ADDBA window size aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to compute a kzalloc size and stored in rxtid->hold_q_sz, leading to zero-size or overflowed allocations and subsequent out-of-bounds access. Clean up any previously active aggregation session for the TID first, then return early when win_sz is out of the valid range, instead of proceeding with a broken allocation size.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 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
- Validate firmware ADDBA window size against defined limits.
- Clean up active aggregation sessions for TID.
- Return early if window size is out of range.
- Ensure allocations use a correct size.
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-2026-68199.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68199 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-2026-68199
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-2026-68199 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68199 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': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': 'd4558c140782180e2c80a7588a4af9f8675adfc4', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '5a65fd4722416061698b0a3277222381efbc4882', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': 'cec0a487cf38ac1f9bca240ffe8a94c5014b72f2', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '44126b6994eeb28f2103b638e698f40a1244f327', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/ath/ath6kl/txrx.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.2', '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/ath6kl/txrx.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': 'd4558c140782180e2c80a7588a4af9f8675adfc4', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '5a65fd4722416061698b0a3277222381efbc4882', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': 'cec0a487cf38ac1f9bca240ffe8a94c5014b72f2', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '44126b6994eeb28f2103b638e698f40a1244f327', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/ath/ath6kl/txrx.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.2', '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/ath6kl/txrx.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': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': 'd4558c140782180e2c80a7588a4af9f8675adfc4', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '5a65fd4722416061698b0a3277222381efbc4882', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': 'cec0a487cf38ac1f9bca240ffe8a94c5014b72f2', 'versionType': 'git'}, {'status': 'affected', 'version': 'bdcd81707973cf8aa9305337166f8ee842a050d4', 'lessThan': '44126b6994eeb28f2103b638e698f40a1244f327', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/ath/ath6kl/txrx.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.2', '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/ath6kl/txrx.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB access from firmware ADDBA window size aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to compute a kzalloc size and stored in rxtid->hold_q_sz, leading to zero-size or overflowed allocations and subsequent out-of-bounds access. Clean up any previously active aggregation session for the TID first, then return early when win_sz is out of the valid range, instead of proceeding with a broken allocation size. Added Reference https://git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327 Added Reference https://git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c Added Reference https://git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882 Added Reference https://git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2 Added Reference https://git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4