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CVE-2004-1056

23
FAUCET Score

CVE-2004-1056 describes a denial-of-service vulnerability in the Direct Rendering Manager (DRM) driver within the Linux kernel 2.6, impacting various Linux distributions including Ubuntu. This flaw, stemming from improper DMA lock checks, allows remote attackers or local users to crash the X Server and potentially alter video output. With a CVSS score of 6.4, it presents a medium severity risk due to its low attack complexity and potential for partial impact on integrity and availability. While there is no evidence of active exploitation, public exploit code, or inclusion in the KEV catalog, the vulnerability has garnered significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2.6.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.7:*:*:*:*:*:*:*
2.6.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.7:rc1:*:*:*:*:*:*
2.6.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.8:*:*:*:*:*:*:*
2.6.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.8:rc1:*:*:*:*:*:*
2.6.8CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:2.6.8:rc2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.4MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:P

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.27%
Probability of exploitation in next 30 days
EPSS Percentile
87.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0327 is in the 82nd percentile among its peer group of 23,705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: kernel-0:2.4.21-37.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: kernel-0:2.6.9-5.0.3.EL
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux AS (Advanced Server) version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux ES version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux WS version 2.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Linux Advanced Workstation 2.1
View patch

Vendor Advisories (1)

redhatCVE-2004-1056Important

security flaw

Dec 14, 2004

References

bugzilla.fedora.us / show_bug.cgi
secunia.com / advisories/17002
exchange.xforce.ibmcloud.com / vulnerabilities/15972
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9795
ubuntu.com / usn/usn-38-1
redhat.com / support/errata/RHSA-2005-092.html
redhat.com / support/errata/RHSA-2005-529.html
redhat.com / support/errata/RHSA-2005-551.html
redhat.com / support/errata/RHSA-2005-663.html
vupen.com / english/advisories/2005/1878