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CVE-2021-47442— NFC: digital: fix possible memory leak in digital_in_send_sdd_req()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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_in_send_sdd_req函数中存在内存泄漏问题。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2c66daecc4092e6049673c281b2e6f0d5e59a94c< 74569c78aa84f8c958f1334b465bc530906ec99a affected
2c66daecc4092e6049673c281b2e6f0d5e59a94c< 88c890b0b9a1fb9fcd01c61ada515e8b636c34f9 affected
2c66daecc4092e6049673c281b2e6f0d5e59a94c< fcce6e5255474ca33c27dda0cdf9bf5087278873 affected
2c66daecc4092e6049673c281b2e6f0d5e59a94c< 071bdef36391958c89af5fa2172f691b31baa212 affected
2c66daecc4092e6049673c281b2e6f0d5e59a94c< 2bde4aca56db9fe25405d39ddb062531493a65db affected
2c66daecc4092e6049673c281b2e6f0d5e59a94c< 50cb95487c265187289810addec5093d4fed8329 affected
2c66daecc4092e6049673c281b2e6f0d5e59a94c< 6432d7f1d1c3aa74cfe8f5e3afdf81b786c32e86 affected
2c66daecc4092e6049673c281b2e6f0d5e59a94c< 291c932fc3692e4d211a445ba8aa35663831bac7 affected
… +10 more rows
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I. Basic Information for CVE-2021-47442

Vulnerability Information
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Vulnerability Title
NFC: digital: fix possible memory leak in digital_in_send_sdd_req()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFC: digital: fix possible memory leak in digital_in_send_sdd_req() 'skb' is allocated in digital_in_send_sdd_req(), but not free when digital_in_send_cmd() failed, which will cause memory leak. Fix it by freeing 'skb' if digital_in_send_cmd() return failed.
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digital_in_send_sdd_req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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2c66daecc4092e6049673c281b2e6f0d5e59a94c ~ 74569c78aa84f8c958f1334b465bc530906ec99a -
Linux Linux 3.13 -

II. Public POCs for CVE-2021-47442

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III. Intelligence Information for CVE-2021-47442

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Other References for CVE-2021-47442 (7)

Same Patch Batch · Linux · 2024-05-22 · 63 CVEs total

CVE-2021-47496 9.8 CRITICAL net/tls: Fix flipped sign in tls_err_abort() calls
CVE-2021-47478 9.1 CRITICAL isofs: Fix out of bound access for corrupted isofs image
CVE-2021-47450 8.8 HIGH KVM: arm64: Fix host stage-2 PGD refcount
CVE-2021-47433 8.1 HIGH btrfs: fix abort logic in btrfs_replace_file_extents
CVE-2021-47446 7.8 HIGH drm/msm/a4xx: fix error handling in a4xx_gpu_init()
CVE-2021-47494 7.8 HIGH cfg80211: fix management registrations locking
CVE-2021-47493 7.8 HIGH ocfs2: fix race between searching chunks and release journal_head from buffer_head
CVE-2021-47492 7.8 HIGH mm, thp: bail out early in collapse_file for writeback page
CVE-2021-47459 7.8 HIGH can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv
CVE-2021-47447 7.8 HIGH drm/msm/a3xx: fix error handling in a3xx_gpu_init()
CVE-2021-47451 7.8 HIGH netfilter: xt_IDLETIMER: fix panic that occurs when timer_type has garbage value
CVE-2021-47485 7.8 HIGH IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields
CVE-2021-47483 7.8 HIGH regmap: Fix possible double-free in regcache_rbtree_exit()
CVE-2021-47461 7.8 HIGH userfaultfd: fix a race between writeprotect and exit_mmap()
CVE-2021-47448 7.5 HIGH mptcp: fix possible stall on recvmsg()
CVE-2021-47438 7.1 HIGH net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path
CVE-2021-47465 7.1 HIGH KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
CVE-2021-47458 7.1 HIGH ocfs2: mount fails with buffer overflow in strlen
CVE-2021-47479 staging: rtl8712: fix use-after-free in rtl8712_dl_fw
CVE-2024-36010 igb: Fix string truncation warnings in igb_set_fw_version

Showing top 20 of 63 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47442

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