https://vulnerability.circl.lu/sightings/feed 2026-05-07T17:12:15.214089+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent sightings. https://vulnerability.circl.lu/sighting/4b2c9267-2600-42ed-a012-c7cb6fe0adaf/export 2026-05-07T17:12:15.635968+00:00 Automation user http://vulnerability.circl.lu/user/automation {"uuid": "4b2c9267-2600-42ed-a012-c7cb6fe0adaf", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-47376", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/16497", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2021-47376\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add oversize check before call kvcalloc()\n\nCommit 7661809d493b (\"mm: don't allow oversized kvmalloc() calls\") add the\noversize check. When the allocation is larger than what kmalloc() supports,\nthe following warning triggered:\n\nWARNING: CPU: 0 PID: 8408 at mm/util.c:597 kvmalloc_node+0x108/0x110 mm/util.c:597\nModules linked in:\nCPU: 0 PID: 8408 Comm: syz-executor221 Not tainted 5.14.0-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:kvmalloc_node+0x108/0x110 mm/util.c:597\nCall Trace:\n kvmalloc include/linux/mm.h:806 [inline]\n kvmalloc_array include/linux/mm.h:824 [inline]\n kvcalloc include/linux/mm.h:829 [inline]\n check_btf_line kernel/bpf/verifier.c:9925 [inline]\n check_btf_info kernel/bpf/verifier.c:10049 [inline]\n bpf_check+0xd634/0x150d0 kernel/bpf/verifier.c:13759\n bpf_prog_load kernel/bpf/syscall.c:2301 [inline]\n __sys_bpf+0x11181/0x126e0 kernel/bpf/syscall.c:4587\n __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]\n __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]\n __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4689\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\ud83d\udccf Published: 2024-05-21T15:03:39.738Z\n\ud83d\udccf Modified: 2025-05-15T12:32:30.914Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/93937596e0652d50973f9dc944fea1694ac8cdfd\n2. https://git.kernel.org/stable/c/6345a0bee80139ea00a341c4202ebfd1534b5eb0\n3. https://git.kernel.org/stable/c/b5fe7cdfee5901ce5513c30e554d51536e003bde\n4. https://git.kernel.org/stable/c/0e6491b559704da720f6da09dd0a52c4df44c514", "creation_timestamp": "2025-05-15T13:33:45.000000Z"} 2025-05-15T13:33:45+00:00