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CVE-2021-47485— IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields

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struct qib_user_sdma_pkt字段存在缓冲区溢出问题。

CVSS 7.8 · High EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux f931551bafe1f10ded7f5282e2aa162c267a2e5d< bda41654b6e0c125a624ca35d6d20beb8015b5d0 affected
f931551bafe1f10ded7f5282e2aa162c267a2e5d< 3f57c3f67fd93b4da86aeffea1ca32c484d054ad affected
f931551bafe1f10ded7f5282e2aa162c267a2e5d< 60833707b968d5ae02a75edb7886dcd4a957cf0d affected
f931551bafe1f10ded7f5282e2aa162c267a2e5d< 73d2892148aa4397a885b4f4afcfc5b27a325c42 affected
f931551bafe1f10ded7f5282e2aa162c267a2e5d< 0f8cdfff06829a0b0348b6debc29ff6a61967724 affected
f931551bafe1f10ded7f5282e2aa162c267a2e5d< c3e17e58f571f34c51aeb17274ed02c2ed5cf780 affected
f931551bafe1f10ded7f5282e2aa162c267a2e5d< 0d4395477741608d123dad51def9fe50b7ebe952 affected
f931551bafe1f10ded7f5282e2aa162c267a2e5d< d39bf40e55e666b5905fdbd46a0dced030ce87be affected
… +10 more rows
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I. Basic Information for CVE-2021-47485

Vulnerability Information
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Vulnerability Title
IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields Overflowing either addrlimit or bytes_togo can allow userspace to trigger a buffer overflow of kernel memory. Check for overflows in all the places doing math on user controlled buffers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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struct qib_user_sdma_pkt字段存在缓冲区溢出问题。
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 f931551bafe1f10ded7f5282e2aa162c267a2e5d ~ bda41654b6e0c125a624ca35d6d20beb8015b5d0 -
Linux Linux 2.6.35 -

II. Public POCs for CVE-2021-47485

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III. Intelligence Information for CVE-2021-47485

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Other References for CVE-2021-47485 (6)

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-2021-47451 7.8 HIGH netfilter: xt_IDLETIMER: fix panic that occurs when timer_type has garbage value
CVE-2021-47459 7.8 HIGH can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv
CVE-2021-47461 7.8 HIGH userfaultfd: fix a race between writeprotect and exit_mmap()
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-2021-47447 7.8 HIGH drm/msm/a3xx: fix error handling in a3xx_gpu_init()
CVE-2021-47483 7.8 HIGH regmap: Fix possible double-free in regcache_rbtree_exit()
CVE-2021-47446 7.8 HIGH drm/msm/a4xx: fix error handling in a4xx_gpu_init()
CVE-2021-47448 7.5 HIGH mptcp: fix possible stall on recvmsg()
CVE-2021-47465 7.1 HIGH KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
CVE-2021-47438 7.1 HIGH net/mlx5e: Fix memory leak in mlx5_core_destroy_cq() error path
CVE-2021-47458 7.1 HIGH ocfs2: mount fails with buffer overflow in strlen
CVE-2021-47476 comedi: ni_usb6501: fix NULL-deref in command paths
CVE-2021-47479 staging: rtl8712: fix use-after-free in rtl8712_dl_fw
CVE-2021-47474 comedi: vmk80xx: fix bulk-buffer overflow

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-2021-47485

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