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CVE-2021-47159

UNKNOWN
Published 2024-03-25T09:16:13.815Z
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No CVSS data available

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

badf3ada60ab8f76f9488dc8f5c0c57f70682f5a badf3ada60ab8f76f9488dc8f5c0c57f70682f5a badf3ada60ab8f76f9488dc8f5c0c57f70682f5a badf3ada60ab8f76f9488dc8f5c0c57f70682f5a badf3ada60ab8f76f9488dc8f5c0c57f70682f5a
Linux

Linux

Affected Versions:

4.7 0 4.19.193 5.4.124 5.10.42 5.12.9 5.13

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-5c7w-v73j-6cr4

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47159
WEB https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37
WEB https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373
WEB https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83
WEB https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6
WEB https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8

Advisory provided by GitHub Security Advisory Database. Published: March 25, 2024, Modified: March 13, 2025

References

https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37
https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8
https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6
https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373
https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83
Published: 2024-03-25T09:16:13.815Z
Last Modified: 2025-05-04T07:05:17.593Z
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