cve-2021-47376
Vulnerability from cvelistv5
Published
2024-05-21 15:03
Modified
2024-11-04 12:04
Severity ?
Summary
bpf: Add oversize check before call kvcalloc()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e6491b559704da720f6da09dd0a52c4df44c514
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6345a0bee80139ea00a341c4202ebfd1534b5eb0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/93937596e0652d50973f9dc944fea1694ac8cdfd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b5fe7cdfee5901ce5513c30e554d51536e003bde
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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    "dateReserved": "2024-05-21T14:58:30.811Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47376\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-21T15:15:23.380\",\"lastModified\":\"2024-05-21T16:54:26.047\",\"vulnStatus\":\"Awaiting Analysis\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Add oversize check before call kvcalloc()\\n\\nCommit 7661809d493b (\\\"mm: don\u0027t 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\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Agregar verificaci\u00f3n de tama\u00f1o excesivo antes de llamar a kvcalloc() Confirmaci\u00f3n 7661809d493b (\\\"mm: no permitir llamadas a kvmalloc() de gran tama\u00f1o\\\") agregar la verificaci\u00f3n de tama\u00f1o excesivo. Cuando la asignaci\u00f3n es mayor que lo que admite kmalloc(), se activa la siguiente advertencia: ADVERTENCIA: CPU: 0 PID: 8408 en mm/util.c:597 kvmalloc_node+0x108/0x110 mm/util.c:597 M\u00f3dulos vinculados en: CPU : 0 PID: 8408 Comm: syz-executor221 No contaminado 5.14.0-syzkaller #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kvmalloc_node+0x108/0x110 mm/util .c:597 Seguimiento de llamadas: kvmalloc include/linux/mm.h:806 [en l\u00ednea] kvmalloc_array include/linux/mm.h:824 [en l\u00ednea] kvcalloc include/linux/mm.h:829 [en l\u00ednea] check_btf_line kernel/bpf /verifier.c:9925 [en l\u00ednea] check_btf_info kernel/bpf/verifier.c:10049 [en l\u00ednea] bpf_check+0xd634/0x150d0 kernel/bpf/verifier.c:13759 bpf_prog_load kernel/bpf/syscall.c:2301 [en l\u00ednea] __sys_bpf +0x11181/0x126e0 kernel/bpf/syscall.c:4587 __do_sys_bpf kernel/bpf/syscall.c:4691 [en l\u00ednea] __se_sys_bpf kernel/bpf/syscall.c:4689 [en l\u00ednea] __x64_sys_bpf+0x78/0x90 pf/syscall.c:4689 do_syscall_x64 arch/x86/entry/common.c:50 [en l\u00ednea] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 Entry_SYSCALL_64_after_hwframe+0x44/0xae\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0e6491b559704da720f6da09dd0a52c4df44c514\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6345a0bee80139ea00a341c4202ebfd1534b5eb0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/93937596e0652d50973f9dc944fea1694ac8cdfd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b5fe7cdfee5901ce5513c30e554d51536e003bde\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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}


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