CVE-2019-11833: canonical ubuntu_linux Use of Uninitialized Resource
Vulnerability summary
CVE-2019-11833 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in canonical ubuntu_linux. EPSS estimates a 0.65% chance of exploitation in the next 30 days, higher than 50.9% of scored vulnerabilities.
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 29 · Related 19Timeline
- 15-05-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.65%
Chance of exploitation in the next 30 days
Percentile
51%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.65% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu25 products
- linuxAll versions (No fix recorded) | < 4.4.0-157.185 | < 4.15.0-55.60
- linux-aws< 4.4.0-1054.58 | < 4.4.0-1090.101 | < 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 | < 4.15.0-1051.56 | < 4.18.0-1025.27~18.04.1
Redhat11 products
- enterprise_linux8.0
- enterprise_linux_desktop7.0
- enterprise_linux_eus8.1 | 8.2 | 8.4 | 8.6
- enterprise_linux_for_real_time7 | 8.0
- enterprise_linux_for_real_time_for_nfv7 | 8.0
Debian2 products
- linux< 4.19.37-4
- debian_linuxEOL8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 19.04
Fedoraproject1 product
- fedoraEOL29
Linux1 product
- linux_kernel≤ 5.1.2
6 vendors · 41 products
References
33 links- github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64X Refsource MISCPatchThird Party AdvisoryREPORT
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.htmlVendor AdvisoryX Refsource SUSEBroken Link
- lists.debian.org/debian-lts-announce/2019/06/msg00010.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/06/msg00011.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.htmlVendor AdvisoryX Refsource SUSEBroken Link
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.htmlVendor AdvisoryX Refsource SUSEBroken Link
Show all 33 references
- packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.htmlX Refsource MISCThird Party AdvisoryVDB Entry
- git.kernel.org/pub/…REPORT