CVE-2011-4324 — kernel: nfsv4: mknod(2) DoS

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MEDIUM

kernel: nfsv4: mknod(2) DoS

Published Jun 21, 2012

4.9

MEDIUM

CVSS 2.0

EPSS 0.48%

Description

The encode_share_access function in fs/nfs/nfs4xdr.c in the Linux kernel before 2.6.29 allows local users to cause a denial of service (BUG and system crash) by using the mknod system call with a pathname on an NFSv4 filesystem.

Affected products

Red Hat Enterprise Linux 5

kernel-0:2.6.18-274.17.1.el5

Fixed · RHSA-2012:0007
Red Hat Enterprise Linux 4

kernel

Will not fix
Red Hat Enterprise Linux 6

kernel

Not affected
Red Hat Enterprise MRG 2

realtime-kernel

Not affected

Product	Package	State	Advisory
Red Hat Enterprise Linux 5	kernel-0:2.6.18-274.17.1.el5	Fixed	RHSA-2012:0007
Red Hat Enterprise Linux 4	kernel	Will not fix	n/a
Red Hat Enterprise Linux 6	kernel	Not affected	n/a
Red Hat Enterprise MRG 2	realtime-kernel	Not affected	n/a

Remediation

Red Hat statement

This issue did not affect the Linux kernels as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as they did not have the vulnerable code as introduced in history:1a7bc914. This has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2012-0007.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.

Metrics

0.48% 0.00478

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00478

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.48% (0.00478)	38.94th	v5 (v2026.06.15)
Jun 15, 2026	0.48% (0.00478)	37.29th	v5 (v2026.06.15)
Mar 17, 2025	0.16% (0.00158)	34.05th	v4 (v2025.03.14)
Dec 12, 2024	0.04% (0.00042)	5.07th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00042)	5.63th	v3 (v2023.03.01)
Mar 6, 2023	0.95% (0.00950)	32.28th	v2 (v2022.01.01)
Feb 13, 2023	0.95% (0.00950)	31.86th	v2 (v2022.01.01)
Feb 3, 2023	1.03% (0.01034)	40.96th	v2 (v2022.01.01)
Sep 10, 2022	0.95% (0.00950)	30.63th	v2 (v2022.01.01)
Apr 1, 2022	0.95% (0.00950)	28.61th	v2 (v2022.01.01)
Feb 4, 2022	0.95% (0.00950)	13.46th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (8)

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29
x_refsource_CONFIRM
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=dc0b027dfadfcb8a5504f7d8052754bf8d501ab9
x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2012/02/06/3
mailing-listx_refsource_MLIST
https://access.redhat.com/security/cve/CVE-2011-4324
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=755440
x_refsource_CONFIRMIssue Tracking
https://github.com/torvalds/linux/commit/dc0b027dfadfcb8a5504f7d8052754bf8d501ab9
x_refsource_CONFIRMExploitPatch
https://nvd.nist.gov/vuln/detail/CVE-2011-4324
https://www.cve.org/CVERecord?id=CVE-2011-4324

Link	Providers	Tags
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.29		x_refsource_CONFIRM
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=dc0b027dfadfcb8a5504f7d8052754bf8d501ab9		x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2012/02/06/3		mailing-listx_refsource_MLIST
https://access.redhat.com/security/cve/CVE-2011-4324		Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=755440		x_refsource_CONFIRMIssue Tracking
https://github.com/torvalds/linux/commit/dc0b027dfadfcb8a5504f7d8052754bf8d501ab9		x_refsource_CONFIRMExploitPatch
https://nvd.nist.gov/vuln/detail/CVE-2011-4324
https://www.cve.org/CVERecord?id=CVE-2011-4324