CVE-2019-19036: linux linux_kernel NULL Pointer Dereference
Vulnerability summary
CVE-2019-19036 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 1.84% chance of exploitation in the next 30 days, higher than 79% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 13 · Related 13Timeline
- 21-11-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
btrfs_root_node in fs/btrfs/ctree.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because rcu_dereference(root->node) can be zero.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.84%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.84% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundCve
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu33 products
- linuxAll versions (No fix recorded) | < 4.15.0-109.110
- linux-awsAll versions (No fix recorded) | < 4.15.0-1077.81
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-fips< 4.15.0-2022.22 | All versions (No fix recorded)
- linux-aws-hwe< 4.15.0-1079.83~16.04.1
Debian1 product
- linux< 5.3.7-1
Linux1 product
- linux_kernel≤ 5.3.12
3 vendors · 35 products
References
10 links- github.com/bobfuzzer/CVE/tree/master/CVE-2019-19036X Refsource MISCREPORTExploitThird Party Advisory
- security.netapp.com/advisory/ntap-20191205-0001/X Refsource CONFIRM
