CVE-2024-41091
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.26% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3Patch
- https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9Patch
- https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2Patch
- https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319Patch
- https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5Patch
- https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bbPatch
- https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146Patch
- https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692aPatch
- https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3Patch
- https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9Patch
- https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2Patch
- https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319Patch
- https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5Patch
- https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bbPatch
- https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146Patch
- https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692aPatch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.