CVE-2018-14646: linux linux_kernel NULL Pointer Dereference
CVSS: 5.5v3.0MediumModified
AliasesRHSA-2018:3843UBUNTU-CVE-2018-14646
Published 26-11-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-14646 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.9% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.0 (CVE.org)EPSS score
0.39%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2Timeline
- 26-11-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
The Linux kernel before 4.15-rc8 was found to be vulnerable to a NULL pointer dereference bug in the __netlink_ns_capable() function in the net/netlink/af_netlink.c file. A local attacker could exploit this when a net namespace with a netnsid is assigned to cause a kernel panic and a denial of service.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 5.5Preferred score · CVE.org (CNA)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- NVDNIST5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · Red hatEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Medium 4.9Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:N/I:N/A:CSourcesSingle source
EPSS trend
Probability
0.39%
Chance of exploitation in the next 30 days
Percentile
32%
Versus all other CVEs
30-day change
0.00 pp
From 0.39% on 19-09-2026
19-09-202619-10-2026
EPSS score0.39%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat31 products
- enterprise_linux_desktop7.0
- enterprise_linux_server7.0
- enterprise_linux_server_aus7.6
- enterprise_linux_server_eus7.5 | 7.6
- enterprise_linux_server_tus7.6
Ubuntu11 products
- linux< 3.11.0-12.19 | < 4.2.0-16.19 | < 4.13.0-16.19
- linux-aws< 4.4.0-1002.2 | < 4.4.0-1001.10 | < 4.15.0-1001.1
- linux-azure< 4.15.0-1023.24~14.04.1 | < 4.11.0-1009.9 | < 4.15.0-1002.2
- linux-azure-edge< 4.18.0-1006.6~18.04.1
- linux-gcp< 4.10.0-1004.4 | < 4.15.0-1001.1
[unknown]1 product
- kernel:4.15-rc8
Linux1 product
- linux_kernel≤ 4.14 | 4.15:rc1 | 4.15:rc2 | 4.15:rc3 | 4.15:rc4 | 4.15:rc5 | 4.15:rc6 | 4.15:rc7
4 vendors · 44 products
References
13 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14646X Refsource CONFIRMIssue TrackingPatchVendor Advisory
