{"id":"DEBIAN-CVE-2021-47376","details":"In the Linux kernel, the following vulnerability has been resolved:  bpf: Add oversize check before call kvcalloc()  Commit 7661809d493b (\"mm: don't allow oversized kvmalloc() calls\") add the oversize check. When the allocation is larger than what kmalloc() supports, the following warning triggered:  WARNING: CPU: 0 PID: 8408 at mm/util.c:597 kvmalloc_node+0x108/0x110 mm/util.c:597 Modules linked in: CPU: 0 PID: 8408 Comm: syz-executor221 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvmalloc_node+0x108/0x110 mm/util.c:597 Call Trace:  kvmalloc include/linux/mm.h:806 [inline]  kvmalloc_array include/linux/mm.h:824 [inline]  kvcalloc include/linux/mm.h:829 [inline]  check_btf_line kernel/bpf/verifier.c:9925 [inline]  check_btf_info kernel/bpf/verifier.c:10049 [inline]  bpf_check+0xd634/0x150d0 kernel/bpf/verifier.c:13759  bpf_prog_load kernel/bpf/syscall.c:2301 [inline]  __sys_bpf+0x11181/0x126e0 kernel/bpf/syscall.c:4587  __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]  __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]  __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4689  do_syscall_x64 arch/x86/entry/common.c:50 [inline]  do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80  entry_SYSCALL_64_after_hwframe+0x44/0xae","modified":"2026-09-15T09:02:35.583537199Z","published":"2024-05-21T15:15:23.380Z","upstream":["CVE-2021-47376"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-47376"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.9-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47376.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.9-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47376.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.14.9-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47376.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}