CVE-2024-56648 — Use of Uninitialized Resource in Linux
Severity
5.5MEDIUMNVD
OSV8.8OSV7.8
EPSS
0.0%
top 99.41%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 27
Latest updateAug 14
Description
In the Linux kernel, the following vulnerability has been resolved:
net: hsr: avoid potential out-of-bound access in fill_frame_info()
syzbot is able to feed a packet with 14 bytes, pretending
it is a vlan one.
Since fill_frame_info() is relying on skb->mac_len already,
extend the check to cover this case.
BUG: KMSAN: uninit-value in fill_frame_info net/hsr/hsr_forward.c:709 [inline]
BUG: KMSAN: uninit-value in hsr_forward_skb+0x9ee/0x3b10 net/hsr/hsr_forward.c:724
fill_frame_info net/hsr/hs…
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