CVE-2021-47376

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Source
https://nvd.nist.gov/vuln/detail/CVE-2021-47376
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47376.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-47376
Related
Published
2024-05-21T15:15:23Z
Modified
2024-09-11T04:41:09.410643Z
Summary
[none]
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 kvmallocnode+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:kvmallocnode+0x108/0x110 mm/util.c:597 Call Trace: kvmalloc include/linux/mm.h:806 [inline] kvmallocarray include/linux/mm.h:824 [inline] kvcalloc include/linux/mm.h:829 [inline] checkbtfline kernel/bpf/verifier.c:9925 [inline] checkbtfinfo kernel/bpf/verifier.c:10049 [inline] bpfcheck+0xd634/0x150d0 kernel/bpf/verifier.c:13759 bpfprogload kernel/bpf/syscall.c:2301 [inline] _sysbpf+0x11181/0x126e0 kernel/bpf/syscall.c:4587 _dosysbpf kernel/bpf/syscall.c:4691 [inline] _sesysbpf kernel/bpf/syscall.c:4689 [inline] _x64sysbpf+0x78/0x90 kernel/bpf/syscall.c:4689 dosyscallx64 arch/x86/entry/common.c:50 [inline] dosyscall64+0x3d/0xb0 arch/x86/entry/common.c:80 entrySYSCALL64after_hwframe+0x44/0xae

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.70-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.14.9-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.14.9-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}