CVE-2019-18805 is a critical vulnerability affecting the Linux kernel (before version 5.0.11), specifically within the net/ipv4/sysctl_net_ipv4.c and tcp_input.c files. It involves a signed integer overflow in tcp_ack_update_rtt() when a large integer is written to /proc/sys/net/ipv4/tcp_min_rtt_wlen, impacting products from Broadcom, NetApp, openSUSE, and Red Hat. With a CVSS score of 9.8, this vulnerability is highly severe, allowing unauthenticated remote attackers to trigger a denial of service and potentially other unspecified impacts with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 4.4, < 4.4.180CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.9, < 4.9.172CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.14, < 4.14.115CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.19, < 4.19.38CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.0, < 5.0.11CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.