CVE-2019-19037: linux linux_kernel NULL Pointer Dereference
Vulnerability summary
CVE-2019-19037 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux linux_kernel. EPSS estimates a 1.89% chance of exploitation in the next 30 days, higher than 79.5% 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 2Timeline
- 21-11-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
ext4_empty_dir in fs/ext4/namei.c in the Linux kernel through 5.3.12 allows a NULL pointer dereference because ext4_read_dirblock(inode,0,DIRENT_HTREE) 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
1.89%
Chance of exploitation in the next 30 days
Percentile
80%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.89% 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.
Ubuntu29 products
- linux< 4.15.0-88.88
- linux-aws< 4.15.0-1060.62
- linux-aws-5.0< 5.0.0-1025.28
- linux-aws-hwe< 4.15.0-1060.62~16.04.1
- linux-azure< 4.15.0-1071.76~14.04.1 | < 4.15.0-1071.76 | < 5.0.0-1032.34
Mageia4 products
- kernel< 5.4.10-1.mga7
- kmod-virtualbox< 6.0.14-18.mga7
- kmod-xtables-addons< 3.7-8.mga7
- wireguard-tools< 1.0.20200102-1.mga7
Debian1 product
- linux< 5.4.8-1
Linux1 product
- linux_kernel≤ 5.3.12
4 vendors · 35 products
References
18 links- github.com/bobfuzzer/CVE/tree/master/CVE-2019-19037X Refsource MISCREPORTExploitThird Party Advisory
- security.netapp.com/advisory/ntap-20191205-0001/X Refsource CONFIRM
