CVE-2009-4895 describes a race condition in the Linux kernel's tty_fasync function (drivers/char/tty_io.c) affecting versions before 2.6.32.6, which could lead to a denial of service (NULL pointer dereference and system crash) for local users. This vulnerability impacts various Canonical and Debian Linux distributions. With a CVSSv3 score of 4.7 (Medium), exploitation requires local access and high attack complexity, primarily resulting in high availability impact. There is no known impact on confidentiality or integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability. It is not listed on the CISA KEV catalog.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.6.32.6CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
5.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:* | ||
6.06CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:* | ||
8.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:-:*:*:* | ||
9.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:9.04:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.