Review reviewHigh

CVE-2024-41091

Linux Linux, linux kernel

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 th...

CVSS
7.1
EPSS
0.25%
16.9% percentile
CISA KEV
Not listed
Published
2024.07.29
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.25%
Technical severityCVSS 7.1

Vulnerability overview

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 th...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 043d222f93ab8c76b56a3b315cd8692e35affb6c < 32b0aaba5dbc85816898167d9b5d45a22eae82e9, >= 043d222f93ab8c76b56a3b315cd8692e35affb6c < 6100e0237204890269e3f934acfc50d35fd6f319, >= 043d222f93ab8c76b56a3b315cd8692e35affb6c < 589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2, >= 043d222f93ab8c76b56a3b315cd8692e35affb6c < ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146, >= 043d222f93ab8c76b56a3b315cd8692e35affb6c < d5ad89b7d01ed4e66fd04734fc63d6e78536692a, >= 043d222f93ab8c76b56a3b315cd8692e35affb6c < a9d1c27e2ee3b0ea5d40c105d6e728fc114470bb, >= 043d222f93ab8c76b56a3b315cd8692e35affb6c < 8418f55302fa1d2eeb73e16e345167e545c598a5, >= 043d222f93ab8c76b56a3b315cd8692e35affb6c < 049584807f1d797fc3078b68035450a9769eb5c3, >= 4.20, >= 4.20 < 5.4.281, >= 5.5 < 5.10.223, >= 5.11 < 5.15.164, >= 5.16 < 6.1.102, >= 6.2 < 6.6.43, >= 6.7 < 6.9.12, >= 6.10 < 6.10.2
Fixed versions
5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12, 6.10.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE
CWE-125
CVE-2024-41091 — Linux Linux, linux kernel | SECUFOCUS NOW