UBUNTU-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.
02 / AFFECTED SOFTWARE
Affected packages
59 explicit affected versions
23 explicit affected versions
6 explicit affected versions
191 explicit affected versions
29 explicit affected versions
10 explicit affected versions
1 explicit affected versions
33 explicit affected versions
1 explicit affected versions
1 explicit affected versions
12 explicit affected versions
1 explicit affected versions
28 explicit affected versions
10 explicit affected versions
9 explicit affected versions
27 explicit affected versions
1 explicit affected versions
6 explicit affected versions
23 explicit affected versions
68 explicit affected versions
11 explicit affected versions
61 explicit affected versions
29 explicit affected versions
28 explicit affected versions
34 explicit affected versions
90 explicit affected versions
51 explicit affected versions
41 explicit affected versions
1 explicit affected versions
1 explicit affected versions
49 explicit affected versions
12 explicit affected versions
30 explicit affected versions
26 explicit affected versions
26 explicit affected versions
54 explicit affected versions
3 explicit affected versions
21 explicit affected versions
11 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/58bdd544e2933a21a51eecf17c3f5f94038261b5
- https://ubuntu.com/security/CVE-2019-12818
- https://ubuntu.com/security/notices/USN-4094-1
- https://ubuntu.com/security/notices/USN-4118-1
- https://www.cve.org/CVERecord?id=CVE-2019-12818
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.15