CVE-2024-41091
Linux TUN Network Stack Ethernet Header Length Validation Buffer Overflow
Description
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
INFO
Published Date :
July 29, 2024, 7:15 a.m.
Last Modified :
Nov. 21, 2024, 9:32 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2024-41091.
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The following table lists the changes that have been made to the
CVE-2024-41091 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3 Added Reference https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9 Added Reference https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 Added Reference https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319 Added Reference https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5 Added Reference https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb Added Reference https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 Added Reference https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692a -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 29, 2024
Action Type Old Value New Value Added Description 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 Added Reference kernel.org https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-41091 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-41091
weaknesses.