CVE-2011-1771 describes a NULL pointer dereference vulnerability in the Linux kernel's CIFS filesystem, specifically within the cifs_close function. This flaw, affecting Linux kernel versions prior to 2.6.39, allows a local attacker to trigger a denial of service (system crash) or potentially achieve further unspecified impact by opening a file with the O_DIRECT flag on a CIFS share. Rated 7.8 HIGH, exploitation requires local access and low privileges, but its impact includes high confidentiality, integrity, and availability compromise. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.6.39CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.