CVE-2021-47443— NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()
Affected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< 429054ec51e648d241a7e0b465cf44f6633334c5 | affected |
1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< a67d47e32c91e2b10402cb8c081774cbf08edb2e | affected | ||
1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< b7b023e6ff567e991c31cd425b0e1d16779c938b | affected | ||
1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< 9881b0c860649f27ef2565deef011e516390f416 | affected | ||
1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< 7ab488d7228a9dceb2456867f1f0919decf6efed | affected | ||
1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< 3f2960b39f22e26cf8addae93c3f5884d1c183c9 | affected | ||
1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< 564249219e5b5673a8416b5181875d828c3f1e8c | affected | ||
1c7a4c24fbfd99442cc6e14dc80fcb00f118e8b8< 58e7dcc9ca29c14e44267a4d0ea61e3229124907 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2021-47443
Vulnerability Information
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Vulnerability Title
NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() 'params' is allocated in digital_tg_listen_mdaa(), but not free when digital_send_cmd() failed, which will cause memory leak. Fix it by freeing 'params' if digital_send_cmd() return failed.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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digital_tg_listen_mdaa函数中存在内存泄漏问题。
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-2021-47443
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-47443 (8)
Same Patch Batch · Linux · 2024-05-22 · 63 CVEs total
| CVE-2021-47477 | comedi: dt9812: fix DMA buffers on stack | |
| CVE-2021-47493 | ocfs2: fix race between searching chunks and release journal_head from buffer_head | |
| CVE-2021-47495 | usbnet: sanity check for maxpacket | |
| CVE-2021-47496 | net/tls: Fix flipped sign in tls_err_abort() calls | |
| CVE-2021-47494 | cfg80211: fix management registrations locking | |
| CVE-2021-47481 | RDMA/mlx5: Initialize the ODP xarray when creating an ODP MR | |
| CVE-2021-47482 | net: batman-adv: fix error handling | |
| CVE-2021-47480 | scsi: core: Put LLD module refcnt after SCSI device is released | |
| CVE-2021-47478 | isofs: Fix out of bound access for corrupted isofs image | |
| CVE-2021-47479 | staging: rtl8712: fix use-after-free in rtl8712_dl_fw | |
| CVE-2021-47483 | regmap: Fix possible double-free in regcache_rbtree_exit() | |
| CVE-2021-47476 | comedi: ni_usb6501: fix NULL-deref in command paths | |
| CVE-2021-47475 | comedi: vmk80xx: fix transfer-buffer overflows | |
| CVE-2021-47474 | comedi: vmk80xx: fix bulk-buffer overflow | |
| CVE-2021-47473 | scsi: qla2xxx: Fix a memory leak in an error path of qla2x00_process_els() | |
| CVE-2021-47471 | drm: mxsfb: Fix NULL pointer dereference crash on unload | |
| CVE-2021-47470 | mm, slub: fix potential use-after-free in slab_debugfs_fops | |
| CVE-2021-47468 | isdn: mISDN: Fix sleeping function called from invalid context | |
| CVE-2021-47467 | kunit: fix reference count leak in kfree_at_end | |
| CVE-2021-47466 | mm, slub: fix potential memoryleak in kmem_cache_open() |
Showing top 20 of 63 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-45836
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndti - CVE-2026-45835
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_conne - CVE-2026-45834
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_cha - CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans
Same vendor: Linux
- CVE-2026-45836
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_get_sndti - CVE-2026-45835
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_new_conne - CVE-2026-45834
Bluetooth: L2CAP: Fix null-ptr-deref in l2cap_sock_state_cha - CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans
V. Comments for CVE-2021-47443
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