Linux Kernel up to 7.3-rc3 mac80211 driver-ops.c ieee80211_join_mesh exceptional condition

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 7.3-rc3. It has been classified as problematic. This affects the function ieee80211_join_mesh of the file net/mac80211/driver-ops.c of the component mac80211. The manipulation leads to exceptional condition. This vulnerability is documented as CVE-2026-98326. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.3-rc3. It has been rated as problematic. This issue affects the function ieee80211_join_mesh of the file net/mac80211/driver-ops.c of the component mac80211. The manipulation with an unknown input leads to a exceptional condition vulnerability. Using CWE to declare the problem leads to CWE-755. The product does not handle or incorrectly handles an exceptional condition. Impacted is integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: mesh: release the channel if start fails ieee80211_join_mesh() acquires a channel context and then calls ieee80211_start_mesh(), which can fail. In that case, the chanctx isn't released then interface removal will attempt to unassign it after it's removed from the driver, hitting: wlan0: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.c:366 at drv_unassign_vif_chanctx ieee80211_assign_link_chanctx __ieee80211_link_release_channel ieee80211_link_release_channel ieee80211_teardown_sdata unregister_netdevice_many_notify _cfg80211_unregister_wdev ieee80211_remove_interfaces ieee80211_unregister_hw mac80211_hwsim_del_radio hwsim_exit_net Correctly release the channel on start failures.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-98326 since 09/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/06/2026).

Upgrading to version 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8 or 7.3-rc4 eliminates this vulnerability. Applying the patch f0afcec2129c166e61821d6ae097061155f01b12/b51f5a310bd6888b90bb9546a8081215dcfe6fbe/632f7acfe6dac1278a9314eaaab14fada400ddaf/41bee71112db53651ba9a9030de1b843255a4a7f/4a4e3fa77ea36d3419d806fb5883ef425a605a5d/ae97fff6495a8764bc0ef281cfe5444f701e527f is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Exceptional condition
CWE: CWE-755
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.189/6.6.158/6.12.112/6.18.54/7.2.8/7.3-rc4
Patch: f0afcec2129c166e61821d6ae097061155f01b12/b51f5a310bd6888b90bb9546a8081215dcfe6fbe/632f7acfe6dac1278a9314eaaab14fada400ddaf/41bee71112db53651ba9a9030de1b843255a4a7f/4a4e3fa77ea36d3419d806fb5883ef425a605a5d/ae97fff6495a8764bc0ef281cfe5444f701e527f

Timelineinfo

09/25/2026 CVE reserved
10/06/2026 +11 days Advisory disclosed
10/06/2026 +0 days VulDB entry created
10/06/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-98326 (🔒)
GCVE (CVE): GCVE-0-2026-98326
GCVE (VulDB): GCVE-100-414251

Entryinfo

Created: 10/06/2026 14:03
Changes: 10/06/2026 14:03 (60)
Complete: 🔍
Cache ID: 216::103

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