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CVE-2011-5327

32
FAUCET Score

CVE-2011-5327 describes an off-by-one error in the tcm_loop_make_naa_tpg() function within the Linux kernel (before version 3.1), specifically affecting the drivers/target/loopback/tcm_loop.c component. This critical vulnerability, with a CVSS score of 9.8, allows for remote exploitation with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability due to memory corruption. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.6.39, < 3.1CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.68%
Probability of exploitation in next 30 days
EPSS Percentile
88.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0368 is in the 81st percentile among its peer group of 36,862 CVEs.

Social Chatter

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.

Media 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.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2011-5327Important

kernel: memory corruption in sunction tcm_loop_make_naa_tpg() in drivers/target/loopback/tcm_loop.c

Jul 27, 2019

References

github.com / torvalds/linux/commit/12f09ccb4612734a53e47ed5302e0479c10a50f8
PatchThird Party Advisory
git.kernel.org / cgit/linux/kernel/git/torvalds/linux.git/commit
PatchVendor Advisory
mirrors.edge.kernel.org / pub/linux/kernel/v3.x/ChangeLog-3.1
Release NotesVendor Advisory
support.f5.com / csp/article/K42315210
Third Party Advisory
support.f5.com / csp/article/K42315210