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CVE-2021-47330— tty: serial: 8250: serial_cs: Fix a memory leak in error handling path

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。攻击者利用该漏洞导致内存泄漏。

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1562

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< b5a2799cd62ed30c81b22c23028d9ee374e2138c affected
15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< 331f5923fce4f45b8170ccf06c529e8eb28f37bc affected
15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< 34f4590f5ec9859ea9136249f528173d150bd584 affected
15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< cddee5c287e26f6b2ba5c0ffdfc3a846f2f10461 affected
15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< ee16bed959862a6de2913f71a04cb563d7237b67 affected
15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< 7a80f71601af015856a0aeb1e3c294037ac3dd32 affected
15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< c39cf4df19acf0133fa284a8cd83fad42cd13cc2 affected
15b99ac1729503db9e6dc642a50b9b6cb3bf51f9< b2ef1f5de40342de44fc5355321595f91774dab5 affected
… +12 more rows
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I. Basic Information for CVE-2021-47330

Vulnerability Information
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Vulnerability Title
tty: serial: 8250: serial_cs: Fix a memory leak in error handling path
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tty: serial: 8250: serial_cs: Fix a memory leak in error handling path In the probe function, if the final 'serial_config()' fails, 'info' is leaking. Add a resource handling path to free this memory.
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。攻击者利用该漏洞导致内存泄漏。
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 15b99ac1729503db9e6dc642a50b9b6cb3bf51f9 ~ b5a2799cd62ed30c81b22c23028d9ee374e2138c -
Linux Linux 2.6.17 -

II. Public POCs for CVE-2021-47330

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III. Intelligence Information for CVE-2021-47330

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Other References for CVE-2021-47330 (7)

Same Patch Batch · Linux · 2024-05-21 · 361 CVEs total

CVE-2023-52732 9.8 CRITICAL ceph: blocklist the kclient when receiving corrupted snap trace
CVE-2023-52755 9.8 CRITICAL ksmbd: fix slab out of bounds write in smb_inherit_dacl()
CVE-2021-47328 9.8 CRITICAL scsi: iscsi: Fix conn use after free during resets
CVE-2023-52741 9.8 CRITICAL cifs: Fix use-after-free in rdata->read_into_pages()
CVE-2021-47378 9.8 CRITICAL nvme-rdma: destroy cm id before destroy qp to avoid use after free
CVE-2021-47232 9.8 CRITICAL can: j1939: fix Use-after-Free, hold skb ref while in use
CVE-2021-47427 9.8 CRITICAL scsi: iscsi: Fix iscsi_task use after free
CVE-2023-52846 8.8 HIGH hsr: Prevent use after free in prp_create_tagged_frame()
CVE-2023-52801 8.8 HIGH iommufd: Fix missing update of domains_itree after splitting iopt_area
CVE-2023-52798 8.8 HIGH wifi: ath11k: fix dfs radar event locking
CVE-2021-47388 8.8 HIGH mac80211: fix use-after-free in CCMP/GCMP RX
CVE-2021-47390 8.8 HIGH KVM: x86: Fix stack-out-of-bounds memory access from ioapic_write_indirect()
CVE-2023-52790 8.8 HIGH swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC
CVE-2023-52769 8.8 HIGH wifi: ath12k: fix htt mlo-offset event locking
CVE-2023-52776 8.8 HIGH wifi: ath12k: fix dfs-radar and temperature event locking
CVE-2021-47308 8.8 HIGH scsi: libfc: Fix array index out of bound exception
CVE-2023-52829 8.4 HIGH wifi: ath12k: fix possible out-of-bound write in ath12k_wmi_ext_hal_reg_caps()
CVE-2021-47240 8.4 HIGH net: qrtr: fix OOB Read in qrtr_endpoint_post
CVE-2021-47352 8.4 HIGH virtio-net: Add validation for used length
CVE-2021-47244 8.2 HIGH mptcp: Fix out of bounds when parsing TCP options

Showing top 20 of 361 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-47330

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