CVE-2021-47586
Severity CVSS v4.0:
Pending analysis
Type:
CWE-125
Out-of-bounds Read
Publication date:
19/06/2024
Last modified:
01/04/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
net: stmmac: dwmac-rk: fix oob read in rk_gmac_setup<br />
<br />
KASAN reports an out-of-bounds read in rk_gmac_setup on the line:<br />
<br />
while (ops->regs[i]) {<br />
<br />
This happens for most platforms since the regs flexible array member is<br />
empty, so the memory after the ops structure is being read here. It<br />
seems that mostly this happens to contain zero anyway, so we get lucky<br />
and everything still works.<br />
<br />
To avoid adding redundant data to nearly all the ops structures, add a<br />
new flag to indicate whether the regs field is valid and avoid this loop<br />
when it is not.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.14 (including) | 5.15.11 (excluding) |
| cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page