CVE-2009-4021
説明
CVE.org より
The fuse_direct_io function in fs/fuse/file.c in the fuse subsystem in the Linux kernel before 2.6.32-rc7 might allow attackers to cause a denial of service (invalid pointer dereference and OOPS) via vectors possibly related to a memory-consumption attack.
詳細
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/CVE-2009-4021
The Linux kernel packages as shipped with Red Hat Enterprise Linux 3 and 4 do not include support for FUSE, and therefore are not affected by this issue.
A future kernel update for Red Hat Enterprise MRG will address this flaw.
CVSS (Common Vulnerability Scoring System) のスコアの詳細
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v2 スコアの内訳
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| ベーススコア | 4.6 | 4.9 | N/A |
| 攻撃ベクトル | Local | Local | N/A |
| アクセスの複雑さ | Low | Low | N/A |
| 認証 | Single | None | N/A |
| 機密性への影響 | None | None | N/A |
| 完全性への影響 | None | None | N/A |
| 可用性への影響 | Complete | Complete | N/A |
ベクトル
Red Hat: AV:L/AC:L/Au:S/C:N/I:N/A:C
NVD: AV:L/AC:L/Au:N/C:N/I:N/A:C
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