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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-49948 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: net: add more sanity checks to qdisc_pkt_len_init() One path takes care of SKB_GSO_DODGY, assuming skb->len is bigger than hdr_len. virtio_net_hdr_to_skb() does not fully dissect TCP headers, it only make sure it is at least 20 bytes. It is possible for an user to provide a malicious 'GSO' packet, total length of 80 bytes. - 20 bytes of IPv4 header - 60 bytes TCP header - a small gso_size like 8 virtio_net_hdr_to_skb() would declare this packet as a normal GSO packet, because it would see 40 bytes of payload, bigger than gso_size. We need to make detect this case to not underflow qdisc_skb_cb(skb)->pkt_len.


Metrics

 
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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/1eebe602a8d8264a12e35e39d0645fa88dbbacdd Patch 
https://git.kernel.org/stable/c/2415f465730e48b6e38da1c7c097317bf5dd2d20 Patch 
https://git.kernel.org/stable/c/27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4 Patch 
https://git.kernel.org/stable/c/473426a1d53a68dd1e718e6cd00d57936993fa6c Patch 
https://git.kernel.org/stable/c/566a931a1436d0e0ad13708ea55479b95426213c Patch 
https://git.kernel.org/stable/c/9b0ee571d20a238a22722126abdfde61f1b2bdd0 Patch 
https://git.kernel.org/stable/c/ab9a9a9e9647392a19e7a885b08000e89c86b535 Patch 
https://git.kernel.org/stable/c/d7d1a28f5dd57b4d83def876f8d7b4403bd37df9 Patch 
https://git.kernel.org/stable/c/ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-49948
NVD Published Date:
10/21/2024
NVD Last Modified:
11/12/2024
Source:
kernel.org