CVE-2013-4591

CVE-2013-4591 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 2.0 base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 6.2)
• EPSS exploit prediction: 1% (43rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Linux Linux Kernel
• Published: 2013-11-20
• Last modified: 2026-06-16

Description

Buffer overflow in the __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the Linux kernel before 3.7.2 allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a getxattr system call for the system.nfs4_acl extended attribute of a pathname on an NFSv4 filesystem.

Frequently asked questions

What is CVE-2013-4591?

Buffer overflow in the __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the Linux kernel before 3.7.2 allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a getxattr system call for the system.nfs4_acl extended attribute of a pathname on an NFSv4 filesystem.

How severe is CVE-2013-4591?

CVE-2013-4591 has a CVSS 2.0 base score of 6.2, rated medium severity.

Is CVE-2013-4591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4591?

CVE-2013-4591 primarily affects Linux Linux Kernel. In total, 204 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4591?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4591 published?

CVE-2013-4591 was published on 2013-11-20 and last updated on 2026-06-16.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7d3e91a89b7adbc2831334def9e494dd9892f9af
• http://rhn.redhat.com/errata/RHSA-2013-1645.html
• http://rhn.redhat.com/errata/RHSA-2014-0284.html
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.2
• http://www.openwall.com/lists/oss-security/2013/11/18/2
• http://www.securityfocus.com/bid/63791
• https://bugzilla.redhat.com/show_bug.cgi?id=1031678
• https://github.com/torvalds/linux/commit/7d3e91a89b7adbc2831334def9e494dd9892f9af

Affected products (204)

• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.8:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.9:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.12:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.13:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.14:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.15:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.16:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.17:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.18:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.19:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.20:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.21:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.22:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.23:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.24:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.25:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.26:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.27:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.28:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.29:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.30:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.31:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:3.0.32:*:*:*:*:*:*:*

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