CVE-2019-6502
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a...
CVE-2019-6502 is a high vulnerability (CVSS 7.5) in Opensc Project Opensc, published January 22, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.20%, the 82nd percentile. Fixed in opensc 0.20.0-r0.
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
7.5
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
CVE-2019-6502- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-401
- Updated
- 2026-11-02
CVE List No score
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
CVE-2019-6502- Updated
- 2026-11-02
EUVDEUVD-2019-16061 No score
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
EUVD-2019-16061- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wfg8-cwx5-w8xc
7.5
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a...
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
GHSA-wfg8-cwx5-w8xc- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSVALPINE-CVE-2019-6502
7.5
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
ALPINE-CVE-2019-6502- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
OSVBELL-CVE-2019-6502
7.5
CVE-2019-6502 does not affect BellSoft software
- Record
BELL-CVE-2019-6502- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Show 8 moreShow less
OSV
7.5
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
CVE-2019-6502- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2019-6502
7.5
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
DEBIAN-CVE-2019-6502- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2019-6502
7.5
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv.
- Record
UBUNTU-CVE-2019-6502- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVMGASA-2020-0026 No score
Updated opensc packages fix security vulnerability
Updated opensc packages fix security vulnerabilities:
sc_context_create in ctx.c in libopensc in OpenSC 0.19.0 has a memory leak, as demonstrated by a call from eidenv (CVE-2019-6502).
OpenSC before 0.20.0-rc1 has an out-of-bounds access of an ASN.1 Bitstring in decode_bit_string in libopensc/asn1.c (CVE-2019-15945).
OpenSC before 0.20.0-rc1 has an out-of-bounds access of an ASN.1 Octet string in asn1_decode_entry in libopensc/asn1.c (CVE-2019-15946).
An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-setcos.c has an incorrect read operation during parsing of a SETCOS file attribute (CVE-2019-19479).
An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/pkcs15-prkey.c has an incorrect free operation in sc_pkcs15_decode_prkdf_entry (CVE-2019-19480).
An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates (CVE-2019-19481).
The opensc package has been updated to version 0.20.0, which has fixes for these issues and other improvements.
- Record
MGASA-2020-0026- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:11123-1 No score
opensc-0.21.0-2.2 on GA media
These are all security issues fixed in the opensc-0.21.0-2.2 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:11123-1- Updated
- 2026-11-02
OSVSUSE-SU-2020:3133-1 No score
Security update for opensc
This update for opensc fixes the following issues:
Security issue fixed:
- CVE-2019-6502: Fixed a memory leak in sc_context_create() (bsc#1122756).
- Record
SUSE-SU-2020:3133-1- Updated
- 2026-11-02
OSVSUSE-SU-2022:1041-1 No score
Security update for opensc
This update for opensc fixes the following issues:
Security issues fixed:
- CVE-2021-42780: Fixed use after return in insert_pin() (bsc#1192005).
- CVE-2021-42779: Fixed use after free in sc_file_valid() (bsc#1191992).
- CVE-2021-42781: Fixed multiple heap buffer overflows in pkcs15-oberthur.c (bsc#1192000).
- CVE-2021-42782: Stack buffer overflow issues in various places (bsc#1191957).
- CVE-2019-6502: Fixed a memory leak in sc_context_create() (bsc#1122756).
- CVE-2020-26570: Fixed a heap based buffer overflow in sc_oberthur_read_file (bsc#1177364).
- CVE-2020-26572: Prevent out of bounds write (bsc#1177378)
- CVE-2020-26571: gemsafe GPK smart card software driver stack-based buffer overflow (bsc#1177380)
- CVE-2019-15946: out-of-bounds access of an ASN.1 Octet string in asn1_decode_entry (bsc#1149747)
- CVE-2019-19479: incorrect read operation during parsing of a SETCOS file attribute (bsc#1158256)
- CVE-2019-15945: Fixed an out-of-bounds access of an ASN.1 Bitstring in decode_bit_string (bsc#1149746).
- CVE-2019-19481: Fixed an improper handling of buffer limits for CAC certificates (bsc#1158305).
- CVE-2019-20792: Fixed a double free in coolkey_free_private_data (bsc#1170809).
Non-security issues fixed:
- Fixes segmentation fault in 'pkcs11-tool.c'. (bsc#1114649)
- Record
SUSE-SU-2022:1041-1- Updated
- 2026-11-02
OSVSUSE-SU-2022:4196-1 No score
Security update for opensc
This update for opensc fixes the following issues:
- CVE-2019-6502: Fixed memory leak in sc_context_create in ctx.c (bsc#1122756).
- Record
SUSE-SU-2022:4196-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
openscAlpine:v3.11 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.12 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.13 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.14 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.15 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.16 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.17 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.18 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.19 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.20 |
before 0.20.0-r0 | 0.20.0-r0 |
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| Package | Affected | Fixed |
|---|---|---|
openscAlpine:v3.21 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.22 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.23 |
before 0.20.0-r0 | 0.20.0-r0 |
openscAlpine:v3.24 |
before 0.20.0-r0 | 0.20.0-r0 |
openscDebian:12 |
before 0.20.0-1 | 0.20.0-1 |
openscDebian:13 |
before 0.20.0-1 | 0.20.0-1 |
openscDebian:14 |
before 0.20.0-1 | 0.20.0-1 |
openscDebian:10 |
before 0.19.0-1+deb10u2, plus listed versions 0.19.0-10.19.0-1+deb10u1 |
0.19.0-1+deb10u2 |
openscMageia:7 |
before 0.20.0-1.mga7 | 0.20.0-1.mga7 |
openscSUSE:Linux Enterprise Server 12 SP5 |
before 0.13.0-3.6.27 | 0.13.0-3.6.27 |
openscSUSE:Linux Enterprise Server for SAP Applications 12 SP5 |
before 0.13.0-3.6.27 | 0.13.0-3.6.27 |
openscSUSE:Linux Enterprise High Performance Computing 15-ESPOS |
before 0.18.0-150000.3.23.1 | 0.18.0-150000.3.23.1 |
openscSUSE:Linux Enterprise High Performance Computing 15-LTSS |
before 0.18.0-150000.3.23.1 | 0.18.0-150000.3.23.1 |
openscSUSE:Linux Enterprise Server 15-LTSS |
before 0.18.0-150000.3.23.1 | 0.18.0-150000.3.23.1 |
openscSUSE:Linux Enterprise Server for SAP Applications 15 |
before 0.18.0-150000.3.23.1 | 0.18.0-150000.3.23.1 |
openscSUSE:Linux Enterprise Module for Basesystem 15 SP3 |
before 0.19.0-150100.3.19.1 | 0.19.0-150100.3.19.1 |
openscSUSE:Linux Enterprise Micro 5.1 |
before 0.19.0-150100.3.19.1 | 0.19.0-150100.3.19.1 |
openscSUSE:Linux Enterprise Micro 5.2 |
before 0.19.0-150100.3.19.1 | 0.19.0-150100.3.19.1 |
openscopenSUSE:Leap Micro 5.2 |
before 0.19.0-150100.3.19.1 | 0.19.0-150100.3.19.1 |
openscopenSUSE:Leap 15.3 |
before 0.19.0-150100.3.19.1 | 0.19.0-150100.3.19.1 |
openscUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 0.15.0-1ubuntu10.15.0-1ubuntu1+esm10.15.0-1ubuntu1+esm20.15.0-1ubuntu1+esm3 |
None known |
openscUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 0.17.0-10.17.0-20.17.0-2build10.17.0-30.17.0-3ubuntu0.1~esm10.17.0-3ubuntu0.1~esm20.17.0-3ubuntu0.1~esm3 |
None known |
openscopenSUSE:Tumbleweed |
before 0.21.0-2.2 | 0.21.0-2.2 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | affected, aliases, references | OSV |
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
github.com/OpenSC/OpenSC/issues/1586
openwall.com/lists/oss-security/2019/12/29/1
lists.debian.org/debian-lts-announce/2023/06/msg00025.html
nvd.nist.gov/vuln/detail/CVE-2019-6502
github.com/advisories/GHSA-wfg8-cwx5-w8xc
security.alpinelinux.org/vuln/CVE-2019-6502
Show 52 moreShow less
docs.bell-sw.com/security/cves/CVE-2019-6502
security-tracker.debian.org/tracker/CVE-2019-6502
advisories.mageia.org/MGASA-2020-0026.html
bugs.mageia.org/show_bug.cgi?id=25975
github.com/OpenSC/OpenSC/releases/tag/0.20.0
suse.com/support/update/announcement/2020/suse-su-20203133-1
bugzilla.suse.com/1122756
suse.com/security/cve/CVE-2019-6502
suse.com/support/update/announcement/2022/suse-su-20221041-1
bugzilla.suse.com/1114649
bugzilla.suse.com/1149746
bugzilla.suse.com/1149747
bugzilla.suse.com/1158256
bugzilla.suse.com/1158305
bugzilla.suse.com/1170809
bugzilla.suse.com/1177364
bugzilla.suse.com/1177378
bugzilla.suse.com/1177380
bugzilla.suse.com/1191957
bugzilla.suse.com/1191992
bugzilla.suse.com/1192000
bugzilla.suse.com/1192005
suse.com/security/cve/CVE-2019-15945
suse.com/security/cve/CVE-2019-15946
suse.com/security/cve/CVE-2019-19479
suse.com/security/cve/CVE-2019-19481
suse.com/security/cve/CVE-2019-20792
suse.com/security/cve/CVE-2020-26570
suse.com/security/cve/CVE-2020-26571
suse.com/security/cve/CVE-2020-26572
suse.com/security/cve/CVE-2021-42779
suse.com/security/cve/CVE-2021-42780
suse.com/security/cve/CVE-2021-42781
suse.com/security/cve/CVE-2021-42782
suse.com/support/update/announcement/2022/suse-su-20224196-1
ubuntu.com/security/CVE-2019-6502
cve.org/CVERecord?id=CVE-2019-6502
suse.com/security/cve/CVE-2008-2235
suse.com/security/cve/CVE-2018-16391
suse.com/security/cve/CVE-2018-16392
suse.com/security/cve/CVE-2018-16393
suse.com/security/cve/CVE-2018-16418
suse.com/security/cve/CVE-2018-16419
suse.com/security/cve/CVE-2018-16420
suse.com/security/cve/CVE-2018-16421
suse.com/security/cve/CVE-2018-16422
suse.com/security/cve/CVE-2018-16423
suse.com/security/cve/CVE-2018-16424
suse.com/security/cve/CVE-2018-16425
suse.com/security/cve/CVE-2018-16426
suse.com/security/cve/CVE-2018-16427
suse.com/security/cve/CVE-2019-19480