CVE-2019-7638

Exp

SDL (Simple DirectMedia Layer) through 1.2.15 and 2.x through 2.0.9 has a heap-based buffer over-read in Map1toN in video/SDL_pixels.c.

Published: 2019-02-08 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-7638 is rated High Exploit Risk (79.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.96%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-7638

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-7638

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.68% 2.96% -0.72%
2 2026-05-29 5.66% 3.68% -1.98%
3 2026-05-27 — 5.66% —

Full EPSS history (35 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-7638

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2019-7638

OS Trackers for CVE-2019-7638

vendor priority summary link
alpine high CVE-2019-7638: 2 source package rows (sdl, sdl2); 13 state rows across 10 repos (3.10-main, 3.11-main, 3.12-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 13, open 0. https://security.alpinelinux.org/vuln/CVE-2019-7638
debian not yet assigned CVE-2019-7638 not yet assigned priority: Debian including 2 source packages (libsdl1.2, libsdl2), 7 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7. https://security-tracker.debian.org/tracker/CVE-2019-7638
gentoo normal CVE-2019-7638: 2 GLSA(s) (201909-07, 202305-17), 2 atom(s) (media-libs/libsdl, media-libs/libsdl2); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2019-7638
redhat medium — https://access.redhat.com/security/cve/CVE-2019-7638
suse medium CVE-2019-7638 severity moderate: SUSE including 52 source package names (SDL-1.2.13-106.11.1, SDL-1.2.15-1.1, …), 116 product×package rows across 43 product lines (SUSE Liberty Linux 7, SUSE Liberty Linux 7 LTSS, … (43 product lines)): Fixed 116. https://www.suse.com/security/cve/CVE-2019-7638/
ubuntu medium CVE-2019-7638 medium priority: Ubuntu including 2 source packages (libsdl1.2, libsdl2), 14 status rows across 7 suites (bionic, cosmic, disco, eoan, trusty, upstream, xenial): released 9, ignored 3, not-affected 2. https://ubuntu.com/security/CVE-2019-7638

Affected software / configurations for CVE-2019-7638

Vendor Product Version Raw CPE
libsdl simple_directmedia_layer <= 1.2.15 cpe:2.3:a:libsdl:simple_directmedia_layer:*:*:*:*:*:*:*:*
libsdl simple_directmedia_layer >= 2.0.0, <= 2.0.9 cpe:2.3:a:libsdl:simple_directmedia_layer:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
opensuse leap 15.0 cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
opensuse leap 42.3 cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*

References for CVE-2019-7638

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00063.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00073.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00088.html Mailing List Third Party Advisory
https://bugzilla.libsdl.org/show_bug.cgi?id=4500 Exploit Issue Tracking Vendor Advisory
https://discourse.libsdl.org/t/vulnerabilities-found-in-libsdl-1-2-15/25720 Vendor Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00015.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00016.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00020.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00021.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00024.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00032.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/02/msg00008.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ZO47LLKKRXKMUGSRCFNHSTHG5OEBYCG/
https://security.gentoo.org/glsa/201909-07 Third Party Advisory
https://security.gentoo.org/glsa/202305-17
https://usn.ubuntu.com/4143-1/ Third Party Advisory
https://usn.ubuntu.com/4156-1/ Third Party Advisory
cvelogic Threat Intelligence