CVE-2024-49948 — Improper Input Validation in Linux
Severity
5.5MEDIUMNVD
OSV8.8OSV7.1OSV6.7OSV6.3OSV4.7
EPSS
0.0%
top 99.37%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 21
Latest updateAug 14
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() wou…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages10 packages
▶CVEListV5linux/linux1def9238d4aa2146924994aa4b7dc861f03b9362 — d7d1a28f5dd57b4d83def876f8d7b4403bd37df9+9