Vulnerability Details : CVE-2019-12818
An issue was discovered in the Linux kernel before 4.20.15. The nfc_llcp_build_tlv function in net/nfc/llcp_commands.c may return NULL. If the caller does not check for this, it will trigger a NULL pointer dereference. This will cause denial of service. This affects nfc_llcp_build_gb in net/nfc/llcp_core.c.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2019-12818
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-12818
2.76%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-12818
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2019-12818
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-12818
-
http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
Kernel Live Patch Security Notice LSN-0054-1 ≈ Packet Storm
-
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=58bdd544e2933a21a51eecf17c3f5f94038261b5
kernel/git/torvalds/linux.git - Linux kernel source treeMailing List;Patch;Vendor Advisory
-
https://usn.ubuntu.com/4094-1/
USN-4094-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://usn.ubuntu.com/4118-1/
USN-4118-1: Linux kernel (AWS) vulnerabilities | Ubuntu security notices
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http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
[security-announce] openSUSE-SU-2019:1570-1: important: Security update
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http://www.securityfocus.com/bid/108776
Linux Kernel CVE-2019-12818 Null Pointer Dereference Remote Denial of Service VulnerabilityThird Party Advisory;VDB Entry
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https://support.f5.com/csp/article/K91444306
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https://github.com/torvalds/linux/commit/58bdd544e2933a21a51eecf17c3f5f94038261b5
net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails · torvalds/linux@58bdd54 · GitHubPatch;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00040.html
[security-announce] openSUSE-SU-2019:1571-1: important: Security update
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http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
[security-announce] openSUSE-SU-2019:1579-1: important: Security update
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https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.15
Mailing List;Release Notes;Vendor Advisory
-
https://security.netapp.com/advisory/ntap-20190710-0002/
June 2019 Linux Kernel Vulnerabilities in NetApp Products | NetApp Product Security
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