CVE-2026-68197

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Setting up a TDLS link to a\npeer while associated to such an AP then dereferences the NULL\nbcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the\ndriver NULL-checks it first.\n\nGuard on the pointer that is actually dereferenced.\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/wireless/marvell/mwifiex/tdls.c"], "versions": [{"version": "396939f94084d5923d558e9f22db48bc51156e47", "lessThan": "e1770f7410b4232a0267924f99751dc9c5ca31af", "status": "affected", "versionType": "git"}, {"version": "396939f94084d5923d558e9f22db48bc51156e47", "lessThan": "8c2058717fd06f05d421c2d3adf1dff3c3abcda1", "status": "affected", "versionType": "git"}, {"version": "396939f94084d5923d558e9f22db48bc51156e47", "lessThan": "fba7eb7b248ea0618235f504158b685d752a153a", "status": "affected", "versionType": "git"}, {"version": "396939f94084d5923d558e9f22db48bc51156e47", "lessThan": 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"bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68197", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-06T16:44:24.447783Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-06T16:45:01.610Z"}}]}}

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Setting up a TDLS link to a\npeer while associated to such an AP then dereferences the NULL\nbcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the\ndriver NULL-checks it first.\n\nGuard on the pointer that is actually dereferenced.\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "3.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "3.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "3.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.148", "versionStartIncluding": "3.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.101", "versionStartIncluding": "3.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.42", "versionStartIncluding": "3.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.6", "versionStartIncluding": "3.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "3.16"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:31:16.085Z"}}}, "cveMetadata": {"cveId": "CVE-2026-68197", "state": "PUBLISHED", "dateUpdated": "2026-11-06T16:45:01.610Z", "dateReserved": "2026-07-30T09:28:09.374Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-10T12:00:15.750Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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Setting up a TDLS link to a\npeer while associated to such an AP then dereferences the NULL\nbcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the\ndriver NULL-checks it first.\n\nGuard on the pointer that is actually dereferenced.\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."}], "id": "CVE-2026-68197", "lastModified": "2026-11-06T17:19:21.903", "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-68197", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-06T16:44:24.447783Z", "version": "2.0.3"}}]}, "published": "2026-08-10T13:20:07.150", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/45011e4d9ba3f2182e5df64be65888044fa20771"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c2058717fd06f05d421c2d3adf1dff3c3abcda1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9375a4ea4121625ef27a46b74781cda66a5cc61b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c3d68e294cbb6a4090bb219d3dcaca85a011809b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cca4398aa305c22016d1714f388e2fa6ea4e5ad4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e1770f7410b4232a0267924f99751dc9c5ca31af"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eb42c3c8fd479166c42984728754cd779c71fd60"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fba7eb7b248ea0618235f504158b685d752a153a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper", "id": "2513459", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513459"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: mwifiex: fix NULL dereference when the AP has HT-cap but no HT-oper\nmwifiex_tdls_add_ht_oper() gates its follow-the-AP-bandwidth path on\nbss_desc->bcn_ht_cap being present, but then dereferences a different\npointer, bss_desc->bcn_ht_oper:\nif (ISSUPP_CHANWIDTH40(priv->adapter->hw_dot_11n_dev_cap) &&\nbss_desc->bcn_ht_cap &&\nISALLOWED_CHANWIDTH40(bss_desc->bcn_ht_oper->ht_param))\nbcn_ht_cap and bcn_ht_oper are populated independently while parsing the\nassociated AP's beacon in mwifiex_update_bss_desc_with_ie(): an AP that\nadvertises an HT Capabilities element but no HT Operation element leaves\nbcn_ht_cap non-NULL and bcn_ht_oper NULL. Setting up a TDLS link to a\npeer while associated to such an AP then dereferences the NULL\nbcn_ht_oper and crashes the kernel. Every other bcn_ht_oper user in the\ndriver NULL-checks it first.\nGuard on the pointer that is actually dereferenced.\nFound by 0sec automated security-research tooling (https://0sec.ai).", "A flaw was found in the Linux kernel's mwifiex Wi-Fi driver. A remote attacker could exploit this by configuring a malicious Access Point (AP) that advertises HT Capabilities but lacks HT Operation elements. When a system attempts to set up a Tunneled Direct Link Setup (TDLS) connection, a NULL pointer dereference occurs. This can lead to a kernel crash, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-68197", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68197\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68197\nhttps://lore.kernel.org/linux-cve-announce/2026081010-CVE-2026-68197-fa1a@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[396939f94084d5923d558e9f22db48bc51156e47,eb42c3c8fd479166c42984728754cd779c71fd60)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[396939f94084d5923d558e9f22db48bc51156e47,45011e4d9ba3f2182e5df64be65888044fa20771)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[396939f94084d5923d558e9f22db48bc51156e47,9375a4ea4121625ef27a46b74781cda66a5cc61b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[396939f94084d5923d558e9f22db48bc51156e47,cca4398aa305c22016d1714f388e2fa6ea4e5ad4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[396939f94084d5923d558e9f22db48bc51156e47,c3d68e294cbb6a4090bb219d3dcaca85a011809b)"}}], "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": "3.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc5,*)"}}], "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": "2026-08-10T14:30:04.128045+00:00", "updated": "2026-08-13T07:45:17.039962+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}