Answer in brief
CVE-2024-41091 records a High severity (CVSS 8.8) vulnerability in tun: add missing verification for short frame. 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.
CVSS is 8.8. 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 | >=043d222f93ab8c76b56a3b315cd8692e35affb6c <32b0aaba5dbc85816898167d9b5d45a22eae82e9 || >=043d222f93ab8c76b56a3b315cd8692e35affb6c <6100e0237204890269e3f934acfc50d35fd6f319 || >=043d222f93ab8c76b56a3b315cd8692e35affb6c <589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 || >=043d222f93ab8c76b56a3b315cd8692e35affb6c <ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 || >=043d222f93ab8c76b56a3b315cd8692e35affb6c <d5ad89b7d01ed4e66fd04734fc63d6e78536692a || >=043d222f93ab8c76b56a3b315cd8692e35affb6c <a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb || >=043d222f93ab8c76b56a3b315cd8692e35affb6c <8418f55302fa1d2eeb73e16e345167e545c598a5 || >=043d222f93ab8c76b56a3b315cd8692e35affb6c <049584807f1d797fc3078b68035450a9769eb5c3 | 32b0aaba5dbc85816898167d9b5d45a22eae82e9, 6100e0237204890269e3f934acfc50d35fd6f319, 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2, ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146, d5ad89b7d01ed4e66fd04734fc63d6e78536692a, a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb, 8418f55302fa1d2eeb73e16e345167e545c598a5, 049584807f1d797fc3078b68035450a9769eb5c3 |
| Linux/Linuxgeneric | 4.20 | Not reported |
Published upstream
Jul 29, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: tun: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP. This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does. CVE: CVE-2024-41091
Quoted source text, attributed separately from HOL analysis.