Riskcovery

CVE-2021-47159

net: dsa: fix a crash if ->get_sset_count() fails

State
Published
Severity
7.8 High
Published
Mar 25, 2024
Updated
Aug 5, 2026
Reserved
Mar 25, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • badf3ada60ab8f76f9488dc8f5c0c57f70682f5a to before 0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37Affected
  • badf3ada60ab8f76f9488dc8f5c0c57f70682f5a to before ce5355f140a7987011388c7e30c4f8fbe180d3e8Affected
  • badf3ada60ab8f76f9488dc8f5c0c57f70682f5a to before caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6Affected
  • badf3ada60ab8f76f9488dc8f5c0c57f70682f5a to before 7b22466648a4f8e3e94f57ca428d1531866d1373Affected
  • badf3ada60ab8f76f9488dc8f5c0c57f70682f5a to before a269333fa5c0c8e53c92b5a28a6076a28cde3e83Affected
LinuxLinux
  • 4.7Affected
  • before 4.7Not affected
  • 4.19.193 through 4.19.*Not affected
  • 5.4.124 through 5.4.*Not affected
  • 5.10.42 through 5.10.*Not affected
  • 5.12.9 through 5.12.*Not affected
  • 5.13 and laterNot affected

References

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