CVE-2011-4913

CVE-2011-4913 is a high-severity vulnerability in Novell Suse Linux Enterprise Server with a CVSS 2.0 base score of 7.8. 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-20.

Key facts

• Severity: High (CVSS 2.0 base score 7.8)
• EPSS exploit prediction: 4% (90th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Novell Suse Linux Enterprise Server
• Published: 2012-06-21
• Last modified: 2026-06-16

Description

The rose_parse_ccitt function in net/rose/rose_subr.c in the Linux kernel before 2.6.39 does not validate the FAC_CCITT_DEST_NSAP and FAC_CCITT_SRC_NSAP fields, which allows remote attackers to (1) cause a denial of service (integer underflow, heap memory corruption, and panic) via a small length value in data sent to a ROSE socket, or (2) conduct stack-based buffer overflow attacks via a large length value in data sent to a ROSE socket.

Frequently asked questions

What is CVE-2011-4913?

The rose_parse_ccitt function in net/rose/rose_subr.c in the Linux kernel before 2.6.39 does not validate the FAC_CCITT_DEST_NSAP and FAC_CCITT_SRC_NSAP fields, which allows remote attackers to (1) cause a denial of service (integer underflow, heap memory corruption, and panic) via a small length value in data sent to a ROSE socket, or (2) conduct stack-based buffer overflow attacks via a large length value in data sent to a ROSE socket.

How severe is CVE-2011-4913?

CVE-2011-4913 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-4913 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4913?

CVE-2011-4913 primarily affects Novell Suse Linux Enterprise Server. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4913?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-4913 published?

CVE-2011-4913 was published on 2012-06-21 and last updated on 2026-06-16.

References

• http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=be20250c13f88375345ad99950190685eda51eb8
• http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
• http://www.openwall.com/lists/oss-security/2011/12/28/2
• https://bugzilla.redhat.com/show_bug.cgi?id=770777
• https://github.com/torvalds/linux/commit/be20250c13f88375345ad99950190685eda51eb8

Affected products (18)

• cpe:2.3:o:novell:suse_linux_enterprise_server:10.0:sp4:*:*:ltss:*:*:*
• cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc1:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc2:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc3:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc4:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc5:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc6:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc7:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38:rc8:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux:linux_kernel:2.6.38.7:*:*:*:*:*:*:*

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