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CVE-2021-47252— batman-adv: Avoid WARN_ON timing related checks

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核错误。

AI Predicted 3.3 Difficulty: Theoretical EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< 45011f2973f6b52cf50db397bb27bf805f5f0e7f affected
ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< 6031daaaf6d5c359c99dfffa102e332df234ff09 affected
ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< 77a99aad5bc3ea105806ebae6be3cbadc2fc615e affected
ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< e8e9d2968a9d08bf5c683afca182f1537edebf8d affected
ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< e7fbd8184fa9e85f0d648c499841cb7ff6dec9f4 affected
ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< 282baa8104af44e04c4af3e7f933b44267c7f86f affected
ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< 2eb4e0b3631832a4291c8bf4c9db873f60b128c8 affected
ef0a937f7a1450d3a133ccd83c9c7d07587e7a00< 9f460ae31c4435fd022c443a6029352217a16ac1 affected
… +10 more rows
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I. Basic Information for CVE-2021-47252

Vulnerability Information
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Vulnerability Title
batman-adv: Avoid WARN_ON timing related checks
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: Avoid WARN_ON timing related checks The soft/batadv interface for a queued OGM can be changed during the time the OGM was queued for transmission and when the OGM is actually transmitted by the worker. But WARN_ON must be used to denote kernel bugs and not to print simple warnings. A warning can simply be printed using pr_warn.
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核错误。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux ef0a937f7a1450d3a133ccd83c9c7d07587e7a00 ~ 45011f2973f6b52cf50db397bb27bf805f5f0e7f -
Linux Linux 3.14 -

II. Public POCs for CVE-2021-47252

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III. Intelligence Information for CVE-2021-47252

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Other References for CVE-2021-47252 (8)

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

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-2023-52755 9.8 CRITICAL ksmbd: fix slab out of bounds write in smb_inherit_dacl()
CVE-2021-47427 9.8 CRITICAL scsi: iscsi: Fix iscsi_task use after free
CVE-2023-52732 9.8 CRITICAL ceph: blocklist the kclient when receiving corrupted snap trace
CVE-2021-47328 9.8 CRITICAL scsi: iscsi: Fix conn use after free during resets
CVE-2021-47232 9.8 CRITICAL can: j1939: fix Use-after-Free, hold skb ref while in use
CVE-2023-52846 8.8 HIGH hsr: Prevent use after free in prp_create_tagged_frame()
CVE-2023-52769 8.8 HIGH wifi: ath12k: fix htt mlo-offset event locking
CVE-2023-52790 8.8 HIGH swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC
CVE-2021-47308 8.8 HIGH scsi: libfc: Fix array index out of bound exception
CVE-2021-47390 8.8 HIGH KVM: x86: Fix stack-out-of-bounds memory access from ioapic_write_indirect()
CVE-2023-52801 8.8 HIGH iommufd: Fix missing update of domains_itree after splitting iopt_area
CVE-2023-52776 8.8 HIGH wifi: ath12k: fix dfs-radar and temperature event locking
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-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-2021-47252

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