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CVE-2021-47320— nfs: fix acl memory leak of posix_acl_create()

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 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1562

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 013cdf1088d7235da9477a2375654921d9b9ba9f< 2e3960f276b4574a9bb0dfa31a7497302f6363b2 affected
013cdf1088d7235da9477a2375654921d9b9ba9f< cef9d9acb7c80ed6bace894b6334557fd493863b affected
013cdf1088d7235da9477a2375654921d9b9ba9f< 8a2b308a54c5ec224fedc753617f99b29ffcd883 affected
013cdf1088d7235da9477a2375654921d9b9ba9f< 0704f617040c397ae73c1f88f3956787ec5d6529 affected
013cdf1088d7235da9477a2375654921d9b9ba9f< d0b32dc1409f7e65e4fcc34e236462268e69a357 affected
013cdf1088d7235da9477a2375654921d9b9ba9f< 4b515308ab875c7e8ada8e606fe0c64762da5ed4 affected
013cdf1088d7235da9477a2375654921d9b9ba9f< c8fc86e9df6a6a03f5a8e15a3b7a5c75fd05aa38 affected
013cdf1088d7235da9477a2375654921d9b9ba9f< 687cf32865b2d6960214bce523f2afac58dd3cd2 affected
… +12 more rows
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I. Basic Information for CVE-2021-47320

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
nfs: fix acl memory leak of posix_acl_create()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfs: fix acl memory leak of posix_acl_create() When looking into another nfs xfstests report, I found acl and default_acl in nfs3_proc_create() and nfs3_proc_mknod() error paths are possibly leaked. Fix them in advance.
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 013cdf1088d7235da9477a2375654921d9b9ba9f ~ 2e3960f276b4574a9bb0dfa31a7497302f6363b2 -
Linux Linux 3.14 -

II. Public POCs for CVE-2021-47320

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III. Intelligence Information for CVE-2021-47320

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Other References for CVE-2021-47320 (8)

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-2021-47320

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