CVE-2019-20387: debian debian_linux Out-of-bounds Read
Vulnerability summary
CVE-2019-20387 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in debian debian_linux. EPSS estimates a 2.34% chance of exploitation in the next 30 days, higher than 83.6% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 21-01-2020PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last schema whose length is less than the length of the input schema.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.34%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.34% 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: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat9 products
- libsolv< 0:0.7.11-1.el8
- libsolv-debuginfo< 0:0.7.11-1.el8
- libsolv-debugsource< 0:0.7.11-1.el8
- libsolv-demo-debuginfo< 0:0.7.11-1.el8
- libsolv-tools-debuginfo< 0:0.7.11-1.el8
Debian2 products
- libsolv< 0.6.36-2 | < 0.6.5-1+deb8u1
- debian_linuxEOL8.0
Mageia1 product
- libsolv< 0.7.4-1.1.mga7
Opensuse1 product
- libsolv< 0.7.6
Ubuntu1 product
- libsolvAll versions (No fix recorded)
5 vendors · 14 products
References
17 links- github.com/openSUSE/libsolv/commit/fdb9c9c03508990e4583046b590c30d958f272daX Refsource MISCWEBREPORTPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2020/01/msg00034.htmlMailing ListX Refsource MLISTREPORTThird Party Advisory
