{"api_version":"1","generated_at":"2026-08-10T22:55:30+00:00","cve":"CVE-2026-68373","urls":{"html":"https://cve.report/CVE-2026-68373","api":"https://cve.report/api/cve/CVE-2026-68373.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68373","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68373"},"summary":{"title":"wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x-usb: avoid length underflow in at76_guess_freq()\n\nat76_guess_freq() checks only that the received frame is at least a bare\n802.11 header (24 bytes) before subtracting the fixed management-body\noffset:\n\n\tlen -= el_off;\n\nFor both beacon and probe response frames, el_off is 36. If the frame is\nshorter than el_off, subtracting it causes the calculated IE length to\nwrap. The length is eventually passed to cfg80211_find_elem_match() as a\nvery large unsigned value, so the element walk runs beyond the RX skb.\n\nThis path is reached from at76_rx_tasklet() while scanning. If the device\ndelivers a truncated beacon or probe response, the oversized IE length\ncauses an out-of-bounds read during scanning.\n\nSkip the IE lookup if the frame does not reach the variable elements,\nbefore subtracting el_off.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:30","updated_at":"2026-08-10 13:20:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/bcde7249d45f52f994a9872bedf45994472ade77","name":"https://git.kernel.org/stable/c/bcde7249d45f52f994a9872bedf45994472ade77","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f742d9c98b5c504fc9e6744eef13a721c2aea486","name":"https://git.kernel.org/stable/c/f742d9c98b5c504fc9e6744eef13a721c2aea486","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fb1b50ab699211e777dca5ccfb648788b6a6e519","name":"https://git.kernel.org/stable/c/fb1b50ab699211e777dca5ccfb648788b6a6e519","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/61a799ffd1e5a4fd3702d547828b7ff3d161468e","name":"https://git.kernel.org/stable/c/61a799ffd1e5a4fd3702d547828b7ff3d161468e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e165a1d295e7e814e13b0f92c86e5d48309509ce","name":"https://git.kernel.org/stable/c/e165a1d295e7e814e13b0f92c86e5d48309509ce","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68373","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68373","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1264b951463a00efebe1bb596499aaad620ec8af e165a1d295e7e814e13b0f92c86e5d48309509ce git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1264b951463a00efebe1bb596499aaad620ec8af bcde7249d45f52f994a9872bedf45994472ade77 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1264b951463a00efebe1bb596499aaad620ec8af fb1b50ab699211e777dca5ccfb648788b6a6e519 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1264b951463a00efebe1bb596499aaad620ec8af f742d9c98b5c504fc9e6744eef13a721c2aea486 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1264b951463a00efebe1bb596499aaad620ec8af 61a799ffd1e5a4fd3702d547828b7ff3d161468e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.30","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.30 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e165a1d295e7e814e13b0f92c86e5d48309509ce","status":"affected","version":"1264b951463a00efebe1bb596499aaad620ec8af","versionType":"git"},{"lessThan":"bcde7249d45f52f994a9872bedf45994472ade77","status":"affected","version":"1264b951463a00efebe1bb596499aaad620ec8af","versionType":"git"},{"lessThan":"fb1b50ab699211e777dca5ccfb648788b6a6e519","status":"affected","version":"1264b951463a00efebe1bb596499aaad620ec8af","versionType":"git"},{"lessThan":"f742d9c98b5c504fc9e6744eef13a721c2aea486","status":"affected","version":"1264b951463a00efebe1bb596499aaad620ec8af","versionType":"git"},{"lessThan":"61a799ffd1e5a4fd3702d547828b7ff3d161468e","status":"affected","version":"1264b951463a00efebe1bb596499aaad620ec8af","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/atmel/at76c50x-usb.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.30"},{"lessThan":"2.6.30","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"2.6.30","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"2.6.30","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"2.6.30","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"2.6.30","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"2.6.30","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x-usb: avoid length underflow in at76_guess_freq()\n\nat76_guess_freq() checks only that the received frame is at least a bare\n802.11 header (24 bytes) before subtracting the fixed management-body\noffset:\n\n\tlen -= el_off;\n\nFor both beacon and probe response frames, el_off is 36. If the frame is\nshorter than el_off, subtracting it causes the calculated IE length to\nwrap. The length is eventually passed to cfg80211_find_elem_match() as a\nvery large unsigned value, so the element walk runs beyond the RX skb.\n\nThis path is reached from at76_rx_tasklet() while scanning. If the device\ndelivers a truncated beacon or probe response, the oversized IE length\ncauses an out-of-bounds read during scanning.\n\nSkip the IE lookup if the frame does not reach the variable elements,\nbefore subtracting el_off."}],"providerMetadata":{"dateUpdated":"2026-08-10T12:03:51.663Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e165a1d295e7e814e13b0f92c86e5d48309509ce"},{"url":"https://git.kernel.org/stable/c/bcde7249d45f52f994a9872bedf45994472ade77"},{"url":"https://git.kernel.org/stable/c/fb1b50ab699211e777dca5ccfb648788b6a6e519"},{"url":"https://git.kernel.org/stable/c/f742d9c98b5c504fc9e6744eef13a721c2aea486"},{"url":"https://git.kernel.org/stable/c/61a799ffd1e5a4fd3702d547828b7ff3d161468e"}],"title":"wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68373","datePublished":"2026-08-10T12:03:51.663Z","dateReserved":"2026-07-30T09:28:09.386Z","dateUpdated":"2026-08-10T12:03:51.663Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:30","lastModifiedDate":"2026-08-10 13:20:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68373","Ordinal":"1","Title":"wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()","CVE":"CVE-2026-68373","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68373","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: at76c50x-usb: avoid length underflow in at76_guess_freq()\n\nat76_guess_freq() checks only that the received frame is at least a bare\n802.11 header (24 bytes) before subtracting the fixed management-body\noffset:\n\n\tlen -= el_off;\n\nFor both beacon and probe response frames, el_off is 36. If the frame is\nshorter than el_off, subtracting it causes the calculated IE length to\nwrap. The length is eventually passed to cfg80211_find_elem_match() as a\nvery large unsigned value, so the element walk runs beyond the RX skb.\n\nThis path is reached from at76_rx_tasklet() while scanning. If the device\ndelivers a truncated beacon or probe response, the oversized IE length\ncauses an out-of-bounds read during scanning.\n\nSkip the IE lookup if the frame does not reach the variable elements,\nbefore subtracting el_off.","Type":"Description","Title":"wifi: at76c50x-usb: avoid length underflow in at76_guess_freq()"}]}}}