CVE-2025-37749 — Out-of-bounds Read in Linux
Severity
7.1HIGHNVD
OSV8.8OSV3.2
EPSS
0.1%
top 84.62%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMay 1
Latest updateMar 25
Description
In the Linux kernel, the following vulnerability has been resolved:
net: ppp: Add bound checking for skb data on ppp_sync_txmung
Ensure we have enough data in linear buffer from skb before accessing
initial bytes. This prevents potential out-of-bounds accesses
when processing short packets.
When ppp_sync_txmung receives an incoming package with an empty
payload:
(remote) gef➤ p *(struct pppoe_hdr *) (skb->head + skb->network_header)
$18 = {
type = 0x1,
ver = 0x1,
code = 0x0,
sid = 0x2,
length…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitability: 1.8 | Impact: 5.2
Affected Packages8 packages
Also affects: Debian Linux 11.0