PT-2021-7530 · Linux+5 · Linux Kernel+5
Jiasheng Jiang
+1
·
Published
2021-12-15
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Updated
2023-08-14
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CVE-2022-3106
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.16-rc6
Description
The issue is related to the ef100 update stats function in the drivers/net/ethernet/sfc/ef100 nic.c module of the Linux kernel, which lacks a check of the return value of
kmalloc(). This can lead to a pointer dereference error. Exploitation of this issue may allow an attacker to cause a denial of service or elevate their privileges.Recommendations
For Linux kernel versions prior to 5.16-rc6, consider disabling the
ef100 update stats function as a temporary workaround until a patch is available. Restrict access to the vulnerable module ef100 nic.c to minimize the risk of exploitation. Avoid using the kmalloc() function in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Centos
Linux Kernel
Red Hat
Suse