PT-2019-5417 · Linux+3 · Linux Kernel+3
Published
2019-02-27
·
Updated
2021-05-28
·
CVE-2019-12818
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.20.15
Description
The issue is related to the
nfc llcp build tlv function in the Linux kernel, which may return NULL. If the caller does not check for this, it will trigger a null pointer dereference, causing a denial of service. This can be exploited by a remote attacker to cause a service disruption.Recommendations
For Linux kernel versions prior to 4.20.15, update to version 4.20.15 or later to resolve the issue. As a temporary workaround, consider implementing checks for
NULL return values from the nfc llcp build tlv function to prevent null pointer dereferences.Fix
DoS
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Linux Kernel
Suse
Ubuntu