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.
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37Patch
- https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373Patch
- https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83Patch
- https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6Patch
- https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8Patch
- https://git.kernel.org/stable/c/0f2cb08c57edefb0e7b5045e0e3e9980a3d3aa37Patch
- https://git.kernel.org/stable/c/7b22466648a4f8e3e94f57ca428d1531866d1373Patch
- https://git.kernel.org/stable/c/a269333fa5c0c8e53c92b5a28a6076a28cde3e83Patch
- https://git.kernel.org/stable/c/caff86f85512b8e0d9830e8b8b0dfe13c68ce5b6Patch
- https://git.kernel.org/stable/c/ce5355f140a7987011388c7e30c4f8fbe180d3e8Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.