Answer in brief
CVE-2026-68373 records a Unknown severity vulnerability in wifi: at76c50x-usb: avoid length underflow in at76_guess_freq(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1264b951463a00efebe1bb596499aaad620ec8af <e165a1d295e7e814e13b0f92c86e5d48309509ce || >=1264b951463a00efebe1bb596499aaad620ec8af <bcde7249d45f52f994a9872bedf45994472ade77 || >=1264b951463a00efebe1bb596499aaad620ec8af <fb1b50ab699211e777dca5ccfb648788b6a6e519 || >=1264b951463a00efebe1bb596499aaad620ec8af <f742d9c98b5c504fc9e6744eef13a721c2aea486 || >=1264b951463a00efebe1bb596499aaad620ec8af <61a799ffd1e5a4fd3702d547828b7ff3d161468e | e165a1d295e7e814e13b0f92c86e5d48309509ce, bcde7249d45f52f994a9872bedf45994472ade77, fb1b50ab699211e777dca5ccfb648788b6a6e519, f742d9c98b5c504fc9e6744eef13a721c2aea486, 61a799ffd1e5a4fd3702d547828b7ff3d161468e |
| Linux/Linuxgeneric | 2.6.30 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: at76c50x-usb: avoid length underflow in at76_guess_freq() at76_guess_freq() checks only that the received frame is at least a bare 802.11 header (24 bytes) before subtracting the fixed management-body offset: len -= el_off; For both beacon and probe response frames, el_off is 36. If the frame is shorter than el_off, subtracting it causes the calculated IE length to wrap. The length is eventually passed to cfg80211_find_elem_match() as a very large unsigned value, so the element walk runs beyond the RX skb. This path is reached from at76_rx_tasklet() while scanning. If the device delivers a truncated beacon or probe response, the oversized IE length causes an out-of-bounds read during scanning. Skip the IE lookup if the frame does not reach the variable elements, before subtracting el_off.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68373 records a Unknown severity vulnerability in wifi: at76c50x-usb: avoid length underflow in at76_guess_freq(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1264b951463a00efebe1bb596499aaad620ec8af <e165a1d295e7e814e13b0f92c86e5d48309509ce || >=1264b951463a00efebe1bb596499aaad620ec8af <bcde7249d45f52f994a9872bedf45994472ade77 || >=1264b951463a00efebe1bb596499aaad620ec8af <fb1b50ab699211e777dca5ccfb648788b6a6e519 || >=1264b951463a00efebe1bb596499aaad620ec8af <f742d9c98b5c504fc9e6744eef13a721c2aea486 || >=1264b951463a00efebe1bb596499aaad620ec8af <61a799ffd1e5a4fd3702d547828b7ff3d161468e | e165a1d295e7e814e13b0f92c86e5d48309509ce, bcde7249d45f52f994a9872bedf45994472ade77, fb1b50ab699211e777dca5ccfb648788b6a6e519, f742d9c98b5c504fc9e6744eef13a721c2aea486, 61a799ffd1e5a4fd3702d547828b7ff3d161468e |
| Linux/Linuxgeneric | 2.6.30 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: wifi: at76c50x-usb: avoid length underflow in at76_guess_freq() at76_guess_freq() checks only that the received frame is at least a bare 802.11 header (24 bytes) before subtracting the fixed management-body offset: len -= el_off; For both beacon and probe response frames, el_off is 36. If the frame is shorter than el_off, subtracting it causes the calculated IE length to wrap. The length is eventually passed to cfg80211_find_elem_match() as a very large unsigned value, so the element walk runs beyond the RX skb. This path is reached from at76_rx_tasklet() while scanning. If the device delivers a truncated beacon or probe response, the oversized IE length causes an out-of-bounds read during scanning. Skip the IE lookup if the frame does not reach the variable elements, before subtracting el_off.
Quoted source text, attributed separately from HOL analysis.