CVE-2026-90356

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: free vif links after clearing wcid entries on full reset mt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu while dev->wcid[] still holds pointers to the wcid embedded in each freed link; mt76_reset_device() then dereferences those entries and runs mt76_wcid_cleanup() on them. If a grace period elapses in between, the cleanup operates on freed memory. Run mt76_reset_device() first, so the wcid entries are cleaned up and cleared while the links are still valid.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad
https://git.kernel.org/stable/c/7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7
https://git.kernel.org/stable/c/8826d7a5e2dd727aa96456ccd58b33d2b080e935

Configurations

No configuration.

History

17 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:17

Updated : 2026-09-17 17:17

NVD link : CVE-2026-90356

Mitre link : CVE-2026-90356

CVE.ORG link : CVE-2026-90356

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-90356", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "lessThan": "2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad", "versionType": "git"}, {"status": "affected", "version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "lessThan": "8826d7a5e2dd727aa96456ccd58b33d2b080e935", "versionType": "git"}, {"status": "affected", "version": "ace5d3b6b49e8391beb4d7244348ba7da5298878", "lessThan": "7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7", "versionType": "git"}], "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7996/mac.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"status": "unaffected", "version": "0", "lessThan": "6.18", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.52", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.6", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/net/wireless/mediatek/mt76/mt7996/mac.c"], "defaultStatus": "affected"}]}], "published": "2026-09-17T17:17:34.480", "references": [{"url": "https://git.kernel.org/stable/c/2b10eb3636d0c4cb6b763e045ec1294dbd70f5ad", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/7e4208e9f6a876c2b7d28fdb6b86dff3b05db2f7", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8826d7a5e2dd727aa96456ccd58b33d2b080e935", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: free vif links after clearing wcid entries on full reset\n\nmt7996_mac_reset_vif_iter() queues non-default vif links for kfree_rcu\nwhile dev->wcid[] still holds pointers to the wcid embedded in each\nfreed link; mt76_reset_device() then dereferences those entries and\nruns mt76_wcid_cleanup() on them. If a grace period elapses in between,\nthe cleanup operates on freed memory.\n\nRun mt76_reset_device() first, so the wcid entries are cleaned up and\ncleared while the links are still valid."}], "lastModified": "2026-09-17T17:17:34.480", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}