Vulnerability Details : CVE-2021-47159
In the Linux kernel, the following vulnerability has been resolved:
net: dsa: fix a crash if ->get_sset_count() fails
If ds->ops->get_sset_count() fails then it "count" is a negative error
code such as -EOPNOTSUPP. Because "i" is an unsigned int, the negative
error code is type promoted to a very high value and the loop will
corrupt memory until the system crashes.
Fix this by checking for error codes and changing the type of "i" to
just int.
Products affected by CVE-2021-47159
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:5.13:rc3:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47159
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 12 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47159
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2025-03-13 |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
N/A
|
N/A
|
RedHat-CVE-2021-47159 | 2024-03-25 |
CWE ids for CVE-2021-47159
-
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-47159
-
https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6
net: dsa: fix a crash if ->get_sset_count() fails - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37
net: dsa: fix a crash if ->get_sset_count() fails - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8
net: dsa: fix a crash if ->get_sset_count() fails - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373
net: dsa: fix a crash if ->get_sset_count() fails - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83
net: dsa: fix a crash if ->get_sset_count() fails - kernel/git/stable/linux.git - Linux kernel stable treePatch
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