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CVE-2024-41091

tun: add missing verification for short frame PUBLISHED

Description (CNA)

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

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 043d222f93ab8c76b56a3b315cd8692e35affb6c before 32b0aaba5dbc85816898167d9b5d45a22eae82e9; affected 043d222f93ab8c76b56a3b315cd8692e35affb6c before 6100e0237204890269e3f934acfc50d35fd6f319; affected 043d222f93ab8c76b56a3b315cd8692e35affb6c before 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2; affected 043d222f93ab8c76b56a3b315cd8692e35affb6c before ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146; affected 043d222f93ab8c76b56a3b315cd8692e35affb6c before d5ad89b7d01ed4e66fd04734fc63d6e78536692a; affected 043d222f93ab8c76b56a3b315cd8692e35affb6c before a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb; affected 043d222f93ab8c76b56a3b315cd8692e35affb6c before 8418f55302fa1d2eeb73e16e345167e545c598a5; affected 043d222f93ab8c76b56a3b315cd8692e35affb6c before 049584807f1d797fc3078b68035450a9769eb5c3
Linux / Linuxaffected 4.20; unaffected 0 before 4.20; unaffected 5.4.281 through 5.4.*; unaffected 5.10.223 through 5.10.*; unaffected 5.15.164 through 5.15.*; unaffected 6.1.102 through 6.1.*; unaffected 6.6.43 through 6.6.*; unaffected 6.9.12 through 6.9.*; unaffected 6.10.2 through 6.10.*; unaffected 6.11 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.