CVE-2021-47120— HID: magicmouse: fix NULL-deref on disconnect
Possible ATT&CK Techniques 1AI
T1001 · Data ObfuscationAffected Version Matrix 10
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 9d7b18668956c411a422d04c712994c5fdb23a4b< 368c5d45a87e1bcc7f1e98e0c255c37b7b12c5d6 | affected |
9d7b18668956c411a422d04c712994c5fdb23a4b< b5d013c4c76b276890135b5d32803c4c63924b77 | affected | ||
9d7b18668956c411a422d04c712994c5fdb23a4b< 9cf27473f21913a3eaf4702dd2a25415afd5f33f | affected | ||
9d7b18668956c411a422d04c712994c5fdb23a4b< 4b4f6cecca446abcb686c6e6c451d4f1ec1a7497 | affected | ||
4.20 | affected | ||
< 4.20 | unaffected | ||
5.4.125≤ 5.4.* | unaffected | ||
5.10.43≤ 5.10.* | unaffected | ||
| … +2 more rows | |||
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I. Basic Information for CVE-2021-47120
Vulnerability Information
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Vulnerability Title
HID: magicmouse: fix NULL-deref on disconnect
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: fix NULL-deref on disconnect Commit 9d7b18668956 ("HID: magicmouse: add support for Apple Magic Trackpad 2") added a sanity check for an Apple trackpad but returned success instead of -ENODEV when the check failed. This means that the remove callback will dereference the never-initialised driver data pointer when the driver is later unbound (e.g. on USB disconnect).
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于 HID 模块中存在错误。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-47120
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-47120 (4)
Same Patch Batch · Linux · 2024-03-15 · 26 CVEs total
| CVE-2021-47111 | 8.8 HIGH | xen-netback: take a reference to the RX task thread |
| CVE-2021-47131 | 8.1 HIGH | net/tls: Fix use-after-free after the TLS device goes down and up |
| CVE-2021-47123 | 7.8 HIGH | io_uring: fix ltout double free on completion race |
| CVE-2021-47135 | 7.8 HIGH | mt76: mt7921: fix possible AOOB issue in mt7921_mcu_tx_rate_report |
| CVE-2021-47129 | 7.8 HIGH | netfilter: nft_ct: skip expectations for confirmed conntrack |
| CVE-2021-47126 | 7.8 HIGH | ipv6: Fix KASAN: slab-out-of-bounds Read in fib6_nh_flush_exceptions |
| CVE-2021-47124 | 7.8 HIGH | io_uring: fix link timeout refs |
| CVE-2021-47112 | 7.8 HIGH | x86/kvm: Teardown PV features on boot CPU as well |
| CVE-2021-47132 | 7.5 HIGH | mptcp: fix sk_forward_memory corruption on retransmission |
| CVE-2021-47109 | 7.5 HIGH | neighbour: allow NUD_NOARP entries to be forced GCed |
| CVE-2021-47130 | 7.5 HIGH | nvmet: fix freeing unallocated p2pmem |
| CVE-2021-47113 | 7.1 HIGH | btrfs: abort in rename_exchange if we fail to insert the second ref |
| CVE-2021-47127 | ice: track AF_XDP ZC enabled queues in bitmap | |
| CVE-2021-47110 | x86/kvm: Disable kvmclock on all CPUs on shutdown | |
| CVE-2021-47134 | efi/fdt: fix panic when no valid fdt found | |
| CVE-2021-47133 | HID: amd_sfh: Fix memory leak in amd_sfh_work | |
| CVE-2021-47128 | bpf, lockdown, audit: Fix buggy SELinux lockdown permission checks | |
| CVE-2021-47117 | ext4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed | |
| CVE-2021-47114 | ocfs2: fix data corruption by fallocate | |
| CVE-2021-47125 | sch_htb: fix refcount leak in htb_parent_to_leaf_offload |
Showing top 20 of 26 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ - CVE-2026-64603
platform/x86: intel-hid: Protect ACPI notify handler against - CVE-2026-64601
ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_
Same vendor: Linux
- CVE-2026-68480
x86/bugs: Make Safe-RET robust against interrupt injection - CVE-2026-64604
KVM: VMX: Grab vmcs12 on CR8 interception update iff vCPU is - CVE-2026-64602
iio: adc: spear: Initialize completion before requesting IRQ - CVE-2026-64603
platform/x86: intel-hid: Protect ACPI notify handler against - CVE-2026-64601
ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_
V. Comments for CVE-2021-47120
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