CVE-2024-35893 — Use of Uninitialized Resource in Linux
Severity
5.5MEDIUMNVD
OSV7.0OSV6.8
EPSS
0.0%
top 97.81%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 19
Latest updateSep 18
Description
In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_skbmod: prevent kernel-infoleak
syzbot found that tcf_skbmod_dump() was copying four bytes
from kernel stack to user space [1].
The issue here is that 'struct tc_skbmod' has a four bytes hole.
We need to clear the structure before filling fields.
[1]
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:…
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 Packages5 packages
▶CVEListV5linux/linux86da71b57383d40993cb90baafb3735cffe5d800 — f190a4aa03cbd518bd9c62a66e1233984f5fd2ec+8
Also affects: Debian Linux 10.0