{"id":"DEBIAN-CVE-2023-54056","details":"In the Linux kernel, the following vulnerability has been resolved:  kheaders: Use array declaration instead of char  Under CONFIG_FORTIFY_SOURCE, memcpy() will check the size of destination and source buffers. Defining kernel_headers_data as \"char\" would trip this check. Since these addresses are treated as byte arrays, define them as arrays (as done everywhere else).  This was seen with:    $ cat /sys/kernel/kheaders.tar.xz \u003e\u003e /dev/null    detected buffer overflow in memcpy   kernel BUG at lib/string_helpers.c:1027!   ...   RIP: 0010:fortify_panic+0xf/0x20   [...]   Call Trace:    \u003cTASK\u003e    ikheaders_read+0x45/0x50 [kheaders]    kernfs_fop_read_iter+0x1a4/0x2f0   ...","modified":"2026-09-15T08:47:32.742751888Z","published":"2025-12-24T13:16:07.320Z","upstream":["CVE-2023-54056"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-54056"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.37-1"}]}],"versions":["6.1.27-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54056.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54056.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.3.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54056.json"}}],"schema_version":"1.9.0"}