CVE-2024-49948

Advisory lineage Upstream: 0 Downstream: 53
Modified
Published: 21 Oct 2024, 18:02
Last modified:12 May 2026, 11:59

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
<0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

21 Oct 2024, 18:02
Published
Vulnerability first disclosed
12 May 2026, 11:59
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 1%

Affected Systems

  • linux•linux

    ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < d7d1a28f5dd57b4d83def876f8d7b4403bd37df9 | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < 473426a1d53a68dd1e718e6cd00d57936993fa6c | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < 566a931a1436d0e0ad13708ea55479b95426213c | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < 2415f465730e48b6e38da1c7c097317bf5dd2d20 | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < 27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4 | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < 9b0ee571d20a238a22722126abdfde61f1b2bdd0 | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2 | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < 1eebe602a8d8264a12e35e39d0645fa88dbbacdd | ≥ 1def9238d4aa2146924994aa4b7dc861f03b9362, < ab9a9a9e9647392a19e7a885b08000e89c86b535 | 3.9

  • linux•linux_kernel

    ≥ 3.9, < 4.19.323 | ≥ 4.20, < 5.4.285 | ≥ 5.5, < 5.10.227 | ≥ 5.11, < 5.15.168 | ≥ 5.16, < 6.1.113 | ≥ 6.2, < 6.6.55 | ≥ 6.7, < 6.10.14 | ≥ 6.11, < 6.11.3 | 6.12:rc1

References (14)