CVE-2026-68304
wifi: brcmfmac: fix 802.1X-SHA256 call trace warning
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: fix 802.1X-SHA256 call trace warning Based on wpa_auth as 1x_256 mode, need to set up "use_fwsup" with BRCMF_PROFILE_FWSUP_1X. Or it will happen trace warning when call brcmf_cfg80211_set_pmk(). [ 4481.831101] ------------[ cut here ]------------ [ 4481.831102] WARNING: CPU: 1 PID: 2997 at drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:7242 brcmf_cfg80211_set_pmk+0x77/0xd0 [brcmfmac] [...] [ 4481.831202] Call Trace: [ 4481.831204] <TASK> [ 4481.831205] nl80211_set_pmk+0x183/0x250 [cfg80211] [ 4481.831233] genl_family_rcv_msg_doit+0xea/0x150 [ 4481.831237] genl_rcv_msg+0x104/0x240 [ 4481.831239] ? cfg80211_probe_status+0x2c0/0x2c0 [cfg80211] [ 4481.831257] ? genl_family_rcv_msg_doit+0x150/0x150 [ 4481.831259] netlink_rcv_skb+0x4e/0x100 [ 4481.831261] genl_rcv+0x24/0x40 [ 4481.831262] netlink_unicast+0x236/0x380 [ 4481.831264] netlink_sendmsg+0x250/0x4b0 [ 4481.831266] sock_sendmsg+0x5c/0x70 [ 4481.831269] ____sys_sendmsg+0x236/0x2b0 [ 4481.831271] ? copy_msghdr_from_user+0x6d/0xa0 [ 4481.831272] ___sys_sendmsg+0x86/0xd0 [ 4481.831274] ? avc_has_perm+0x8c/0x1a0 [ 4481.831276] ? preempt_count_add+0x6a/0xa0 [ 4481.831279] ? sock_has_perm+0x82/0xa0 [ 4481.831280] __sys_sendmsg+0x57/0xa0 [ 4481.831282] do_syscall_64+0x38/0x90 [ 4481.831284] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 4481.831286] RIP: 0033:0x7fd270d369b4
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
Solution
- Update the Linux kernel to the latest version.
- Apply the specific patch for brcmfmac driver.
- Configure 'use_fwsup' with BRCMF_PROFILE_FWSUP_1X.
- Reboot the system after applying the update.
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-2026-68304.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68304 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-2026-68304
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-2026-68304 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68304 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': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '137e4710da626290495b174e2eb1d5e889a4b165', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': 'd3ac5b35ec85c41ccf8ec524d47b520e72edaca1', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '00ebbf030d8c4a1cb89cbbae15e28332373649db', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': 'bd4fac033bb95fcad898cf6734e869991b2561cb', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '7cb34f6c4fe8a68af621d870abe63bfca2275dd6', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.13', '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/broadcom/brcm80211/brcmfmac/cfg80211.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '137e4710da626290495b174e2eb1d5e889a4b165', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': 'd3ac5b35ec85c41ccf8ec524d47b520e72edaca1', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '00ebbf030d8c4a1cb89cbbae15e28332373649db', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': 'bd4fac033bb95fcad898cf6734e869991b2561cb', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '7cb34f6c4fe8a68af621d870abe63bfca2275dd6', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.13', '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/broadcom/brcm80211/brcmfmac/cfg80211.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': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '137e4710da626290495b174e2eb1d5e889a4b165', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': 'd3ac5b35ec85c41ccf8ec524d47b520e72edaca1', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '00ebbf030d8c4a1cb89cbbae15e28332373649db', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': 'bd4fac033bb95fcad898cf6734e869991b2561cb', 'versionType': 'git'}, {'status': 'affected', 'version': '2526ff21aa77c205f72e8263335f20b7d7e636fc', 'lessThan': '7cb34f6c4fe8a68af621d870abe63bfca2275dd6', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.13', '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/broadcom/brcm80211/brcmfmac/cfg80211.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: fix 802.1X-SHA256 call trace warning Based on wpa_auth as 1x_256 mode, need to set up "use_fwsup" with BRCMF_PROFILE_FWSUP_1X. Or it will happen trace warning when call brcmf_cfg80211_set_pmk(). [ 4481.831101] ------------[ cut here ]------------ [ 4481.831102] WARNING: CPU: 1 PID: 2997 at drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:7242 brcmf_cfg80211_set_pmk+0x77/0xd0 [brcmfmac] [...] [ 4481.831202] Call Trace: [ 4481.831204] <TASK> [ 4481.831205] nl80211_set_pmk+0x183/0x250 [cfg80211] [ 4481.831233] genl_family_rcv_msg_doit+0xea/0x150 [ 4481.831237] genl_rcv_msg+0x104/0x240 [ 4481.831239] ? cfg80211_probe_status+0x2c0/0x2c0 [cfg80211] [ 4481.831257] ? genl_family_rcv_msg_doit+0x150/0x150 [ 4481.831259] netlink_rcv_skb+0x4e/0x100 [ 4481.831261] genl_rcv+0x24/0x40 [ 4481.831262] netlink_unicast+0x236/0x380 [ 4481.831264] netlink_sendmsg+0x250/0x4b0 [ 4481.831266] sock_sendmsg+0x5c/0x70 [ 4481.831269] ____sys_sendmsg+0x236/0x2b0 [ 4481.831271] ? copy_msghdr_from_user+0x6d/0xa0 [ 4481.831272] ___sys_sendmsg+0x86/0xd0 [ 4481.831274] ? avc_has_perm+0x8c/0x1a0 [ 4481.831276] ? preempt_count_add+0x6a/0xa0 [ 4481.831279] ? sock_has_perm+0x82/0xa0 [ 4481.831280] __sys_sendmsg+0x57/0xa0 [ 4481.831282] do_syscall_64+0x38/0x90 [ 4481.831284] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 4481.831286] RIP: 0033:0x7fd270d369b4 Added Reference https://git.kernel.org/stable/c/00ebbf030d8c4a1cb89cbbae15e28332373649db Added Reference https://git.kernel.org/stable/c/137e4710da626290495b174e2eb1d5e889a4b165 Added Reference https://git.kernel.org/stable/c/7cb34f6c4fe8a68af621d870abe63bfca2275dd6 Added Reference https://git.kernel.org/stable/c/bd4fac033bb95fcad898cf6734e869991b2561cb Added Reference https://git.kernel.org/stable/c/d3ac5b35ec85c41ccf8ec524d47b520e72edaca1