{"id":"CVE-2026-98338","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: ibss: ref BSS entry for joined event\n\nWhen the IBSS is joined, we only record the BSSID/channel in the event\nand look up the BSS entry when processing i…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: ibss: ref BSS entry for joined event\n\nWhen the IBSS is joined, we only record the BSSID/channel in the event\nand look up the BSS entry when processing i…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= 667503ddcb96f3b10211f997fe55907fa7509841 < b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b","Linux >= 667503ddcb96f3b10211f997fe55907fa7509841 < 708f9d43d6a2eb9c6b83fe62af628de9dffd9314","Linux 2.6.32"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:26.437","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98338","references":[{"url":"https://git.kernel.org/stable/c/708f9d43d6a2eb9c6b83fe62af628de9dffd9314","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98338.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-98338"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546375"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98338"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98338"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98338.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-10-06T08:50:17.400Z","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-366"],"epss":0.00162,"epssPercentile":0.05372,"slug":"CVE-2026-98338","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: ibss: ref BSS entry for joined event\n\nWhen the IBSS is joined, we only record the BSSID/channel in the event\nand look up the BSS entry when processing it. However, that's racy,\ne.g. a new scan with NL80211_SCAN_FLAG_FLUSH can remove it, causing a\nwarning in the event work:\n\n  !bss\n  WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x3d3/0x440\n  Workqueue: cfg80211 cfg80211_event_work\n   cfg80211_process_wdev_events+0x39f/0x5b0 net/wireless/util.c:1144\n   cfg80211_process_rdev_events+0xa1/0x110 net/wireless/util.c:1179\n   cfg80211_event_work+0x2f/0x40 net/wireless/core.c:393\n\nDo the lookup early (the driver is expected to only join an IBSS that\nhas a BSS entry) and keep a reference to it.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-10-18 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98338.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219143,"id":"CVE-2026-98338","ts":1791707074152,"field":"cvss","old":null,"new":"5.5"},{"seq":219142,"id":"CVE-2026-98338","ts":1791707074152,"field":"severity","old":"none","new":"medium"}]}