CVE-2019-12818: linux linux_kernel NULL Pointer Dereference
CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2019-12818DEBIAN-CVE-2019-12818
Published 14-06-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-12818 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 6.01% chance of exploitation in the next 30 days, higher than 93.2% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
6.01%
0%100%
Low · +0.72 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 15 · Related 15Timeline
- 14-06-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 3 sources · 3 versionsMedium 5.7Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NSourcesSingle source
High 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
6.01%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
+0.72 pp
From 5.29% on 21-09-2026
21-09-202621-10-2026
EPSS score6.01%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu23 products
- linuxAll versions (No fix recorded) | < 4.4.0-148.174 | < 4.15.0-58.64
- linux-aws< 4.4.0-1044.47 | < 4.4.0-1083.93 | < 4.15.0-1047.49
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1047.49~16.04.1
- linux-azure< 4.15.0-1059.64~14.04.1 | < 4.15.0-1055.60 | < 5.0.0-1014.14~18.04.1
Debian1 product
- linux< 4.19.28-1
Linux1 product
- linux_kernel< 4.20.15
3 vendors · 25 products
References
18 links- github.com/torvalds/linux/commit/58bdd544e2933a21a51eecf17c3f5f94038261b5X Refsource MISCPatchThird Party Advisory
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.15X Refsource MISCMailing ListRelease NotesVendor AdvisoryREPORT
- support.f5.com/csp/article/K91444306X Refsource CONFIRM
- security.netapp.com/advisory/ntap-20190710-0002/X Refsource CONFIRM
