cve-2021-47376
Vulnerability from cvelistv5
Published
2024-05-21 15:03
Modified
2024-12-19 07:40
Severity ?
Summary
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
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
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0e6491b559704da720f6da09dd0a52c4df44c514
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6345a0bee80139ea00a341c4202ebfd1534b5eb0
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/93937596e0652d50973f9dc944fea1694ac8cdfd
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b5fe7cdfee5901ce5513c30e554d51536e003bde
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

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}


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