Amazon Linux 2 Security Advisory: ALAS2-2026-3824
Advisory Released Date: 2026-07-20
Advisory Updated Date: 2026-07-20
OpenSC before 0.27.0, fixed in commit 0358817, contains a stack and heap buffer overrun vulnerability in the do_key_value() function in src/pkcs15init/profile.c that allows attackers to corrupt memory by supplying a crafted profile configuration file. During pkcs15-init invocation, a key value entry beginning with '=' followed by more than sizeof(keybuf) characters is copied into keybuf via memcpy without a length check, causing both stack and heap buffer overruns. (CVE-2026-40528)
Affected Packages:
opensc
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update opensc or yum update --advisory ALAS2-2026-3824 to update your system.
aarch64:
opensc-0.19.0-6.amzn2.0.4.aarch64
opensc-debuginfo-0.19.0-6.amzn2.0.4.aarch64
i686:
opensc-0.19.0-6.amzn2.0.4.i686
opensc-debuginfo-0.19.0-6.amzn2.0.4.i686
src:
opensc-0.19.0-6.amzn2.0.4.src
x86_64:
opensc-0.19.0-6.amzn2.0.4.x86_64
opensc-debuginfo-0.19.0-6.amzn2.0.4.x86_64