Linux Kernel 3.0.15 x86_64 Cond Jump bpf_jit_comp.c bpf_jit_compile numeric error

CVSS Meta Temp Score
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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 3.0.15 and classified as problematic. This impacts the function bpf_jit_compile of the file bpf_jit_comp.c of the component x86_64 Cond Jump Handler. Executing a manipulation can lead to numeric error. This vulnerability is handled as CVE-2014-2889. There is not any exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 3.0.15 (Operating System). It has been declared as critical. This vulnerability affects the function bpf_jit_compile of the file bpf_jit_comp.c of the component x86_64 Cond Jump Handler. The manipulation with an unknown input leads to a numeric error vulnerability. The CWE definition for the vulnerability is CWE-189. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Off-by-one error in the bpf_jit_compile function in arch/x86/net/bpf_jit_comp.c in the Linux kernel before 3.1.8, when BPF JIT is enabled, allows local users to cause a denial of service (system crash) or possibly gain privileges via a long jump after a conditional jump.

The weakness was released 04/15/2014 as confirmed posting (oss-sec). The advisory is available at openwall.com. This vulnerability was named CVE-2014-2889 since 04/17/2014. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. Responsible for the vulnerability is the following code: 

if (filter[i].jf)
   t_offset += is_near(f_offset) ? 2 : 6;

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The vulnerability will be addressed with the following lines of code:

if (filter[i].jf && f_offset)
   t_offset += is_near(f_offset) ? 2 : 5;
The posting contains the following remark:
BPF JIT is disabled by default, must be enabled by the admin.

The vulnerability is also documented in the databases at X-Force (92684), SecurityFocus (BID 66931†) and Vulnerability Center (SBV-44362†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 9.3
VulDB Temp Score: 8.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

12/19/2011 🔍
12/19/2011 +0 days 🔍
04/15/2014 +848 days 🔍
04/17/2014 +2 days 🔍
04/25/2014 +8 days 🔍
04/26/2014 +1 days 🔍
05/01/2014 +5 days 🔍
05/12/2026 +4393 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-2889 (🔍)
GCVE (CVE): GCVE-0-2014-2889
GCVE (VulDB): GCVE-100-13066
X-Force: 92684 - Linux Kernel bpf_jit_comp.c privilege escalation, High Risk
SecurityFocus: 66931 - Linux Kernel 'bpf_jit_compile()' Function Denial of Service Vulnerability
Vulnerability Center: 44362 - Linux Kernel <3.1.8 Local DoS and Privilege Escalation in bpf_jit_comp.c, Medium

Entryinfo

Created: 04/25/2014 12:46
Updated: 05/12/2026 01:43
Changes: 04/25/2014 12:46 (67), 05/27/2017 10:34 (3), 05/12/2026 01:43 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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