CVE-2026-98196

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98196", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.324Z", "datePublished": "2026-10-06T08:44:35.616Z", "dateUpdated": "2026-10-19T09:15:27.411Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:15:27.411Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: fix UAF in brcms_free_timer()\n\nbrcms_free_timer() calls brcms_del_timer() which uses the non-synchronous\ncancel_delayed_work() to cancel the timer's underlying delayed work. If\nthe work callback (_brcms_timer) is already running, cancel_delayed_work()\nreturns false without waiting, and brcms_free_timer() proceeds to kfree(t)\nwhile the callback still accesses t through container_of().\n\nAdd an explicit cancel_delayed_work_sync() after brcms_del_timer() to\nguarantee that any in-flight callback has completed before the timer\nstructure is freed."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c"], "versions": [{"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "10eeb0b29fd7f52487c9ae573e8d79c210a0095d", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "74acccc928851f69184271832d690607877122af", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "050d2486e8ed2c0a23b87249ccd23e8072721391", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "856dabd5f2617efb23c043be9e1b22a9e6e97c41", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "2a4841ff0b74b495cddd31ae324e922217fc2f13", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "1edb3ddd261e973a4d577c0547e63bfa25a8170d", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "777cb6bba59e875b16a1d8897a483a5fecfcd5d2", "status": "affected", "versionType": "git"}, {"version": "5b435de0d786869c95d1962121af0d7df2542009", "lessThan": "1eeca1d5e0920fbdad6449768fd2d4364e714180", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c"], "versions": [{"version": "3.2", "status": "affected"}, {"version": "0", "lessThan": "3.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.2", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/10eeb0b29fd7f52487c9ae573e8d79c210a0095d"}, {"url": "https://git.kernel.org/stable/c/74acccc928851f69184271832d690607877122af"}, {"url": "https://git.kernel.org/stable/c/050d2486e8ed2c0a23b87249ccd23e8072721391"}, {"url": "https://git.kernel.org/stable/c/856dabd5f2617efb23c043be9e1b22a9e6e97c41"}, {"url": "https://git.kernel.org/stable/c/2a4841ff0b74b495cddd31ae324e922217fc2f13"}, {"url": "https://git.kernel.org/stable/c/1edb3ddd261e973a4d577c0547e63bfa25a8170d"}, {"url": "https://git.kernel.org/stable/c/777cb6bba59e875b16a1d8897a483a5fecfcd5d2"}, {"url": "https://git.kernel.org/stable/c/1eeca1d5e0920fbdad6449768fd2d4364e714180"}], "title": "wifi: brcmsmac: fix UAF in brcms_free_timer()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "10eeb0b29fd7f52487c9ae573e8d79c210a0095d", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}, {"lessThan": "74acccc928851f69184271832d690607877122af", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}, {"lessThan": "050d2486e8ed2c0a23b87249ccd23e8072721391", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}, {"lessThan": "856dabd5f2617efb23c043be9e1b22a9e6e97c41", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}, {"lessThan": "2a4841ff0b74b495cddd31ae324e922217fc2f13", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}, {"lessThan": "1edb3ddd261e973a4d577c0547e63bfa25a8170d", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}, {"lessThan": "777cb6bba59e875b16a1d8897a483a5fecfcd5d2", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}, {"lessThan": "1eeca1d5e0920fbdad6449768fd2d4364e714180", "status": "affected", "version": "5b435de0d786869c95d1962121af0d7df2542009", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.2"}, {"lessThan": "3.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: fix UAF in brcms_free_timer()\n\nbrcms_free_timer() calls brcms_del_timer() which uses the non-synchronous\ncancel_delayed_work() to cancel the timer's underlying delayed work. If\nthe work callback (_brcms_timer) is already running, cancel_delayed_work()\nreturns false without waiting, and brcms_free_timer() proceeds to kfree(t)\nwhile the callback still accesses t through container_of().\n\nAdd an explicit cancel_delayed_work_sync() after brcms_del_timer() to\nguarantee that any in-flight callback has completed before the timer\nstructure is freed."}], "id": "CVE-2026-98196", "lastModified": "2026-10-19T10:18:20.040", "metrics": {}, "published": "2026-10-06T09:18:05.113", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/050d2486e8ed2c0a23b87249ccd23e8072721391"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/10eeb0b29fd7f52487c9ae573e8d79c210a0095d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1edb3ddd261e973a4d577c0547e63bfa25a8170d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1eeca1d5e0920fbdad6449768fd2d4364e714180"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2a4841ff0b74b495cddd31ae324e922217fc2f13"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/74acccc928851f69184271832d690607877122af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/777cb6bba59e875b16a1d8897a483a5fecfcd5d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/856dabd5f2617efb23c043be9e1b22a9e6e97c41"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: brcmsmac: fix UAF in brcms_free_timer()", "id": "2546511", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546511"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's brcmsmac wireless driver. When a timer is released, the driver fails to wait for running background tasks associated with the timer to finish before freeing memory. A local attacker could exploit this race condition to trigger a use-after-free condition, leading to a system crash, denial of service (DoS), or potentially arbitrary code execution."], "name": "CVE-2026-98196", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98196\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98196\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98196.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,10eeb0b29fd7f52487c9ae573e8d79c210a0095d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,74acccc928851f69184271832d690607877122af)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,050d2486e8ed2c0a23b87249ccd23e8072721391)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,856dabd5f2617efb23c043be9e1b22a9e6e97c41)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,2a4841ff0b74b495cddd31ae324e922217fc2f13)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,1edb3ddd261e973a4d577c0547e63bfa25a8170d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,777cb6bba59e875b16a1d8897a483a5fecfcd5d2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5b435de0d786869c95d1962121af0d7df2542009,1eeca1d5e0920fbdad6449768fd2d4364e714180)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.10.271,5.10.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[5.15.222,5.15.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.1.189,6.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.158,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.112,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.54,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.8,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-06T12:30:10.406576+00:00", "updated": "2026-10-09T03:30:06.904549+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416", "CWE-825"]}