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CVE-2024-47705— block: fix potential invalid pointer dereference in blk_add_partition

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block组件中blk_add_partition函数的无效指针解引用问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux b72053072c0bbe9f1cdfe2ffa3c201c185da2201< 4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f affected
b72053072c0bbe9f1cdfe2ffa3c201c185da2201< cc4d21d9492db4e534d3e01253cf885c90dd2a8b affected
b72053072c0bbe9f1cdfe2ffa3c201c185da2201< 64cf2a39202ca2d9df5ee70eb310b6141ce2b8ed affected
b72053072c0bbe9f1cdfe2ffa3c201c185da2201< 80f5bfbb80ea1615290dbc24f49d3d8c86db58fe affected
b72053072c0bbe9f1cdfe2ffa3c201c185da2201< 652039ba477c9a4ab43740cf2cb0d068d53508c2 affected
b72053072c0bbe9f1cdfe2ffa3c201c185da2201< afe53ea9b378c376101d99d216f13b6256f75189 affected
b72053072c0bbe9f1cdfe2ffa3c201c185da2201< 26e197b7f9240a4ac301dd0ad520c0c697c2ea7d affected
5.5 affected
… +8 more rows
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I. Basic Information for CVE-2024-47705

Vulnerability Information
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Vulnerability Title
block: fix potential invalid pointer dereference in blk_add_partition
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: block: fix potential invalid pointer dereference in blk_add_partition The blk_add_partition() function initially used a single if-condition (IS_ERR(part)) to check for errors when adding a partition. This was modified to handle the specific case of -ENXIO separately, allowing the function to proceed without logging the error in this case. However, this change unintentionally left a path where md_autodetect_dev() could be called without confirming that part is a valid pointer. This commit separates the error handling logic by splitting the initial if-condition, improving code readability and handling specific error scenarios explicitly. The function now distinguishes the general error case from -ENXIO without altering the existing behavior of md_autodetect_dev() calls.
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block组件中blk_add_partition函数的无效指针解引用问题。
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 b72053072c0bbe9f1cdfe2ffa3c201c185da2201 ~ 4bc4272e2506941c3f3d4fb8b0c659ee814dcf6f -
Linux Linux 5.5 -

II. Public POCs for CVE-2024-47705

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III. Intelligence Information for CVE-2024-47705

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Patches & Fixes for CVE-2024-47705 (5)

Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total

CVE-2024-50043 9.8 CRITICAL nfsd: fix possible badness in FREE_STATEID
CVE-2022-48985 9.8 CRITICAL net: mana: Fix race on per-CQ variable napi work_done
CVE-2024-47695 9.8 CRITICAL RDMA/rtrs-clt: Reset cid to con_num - 1 to stay in bounds
CVE-2024-50033 9.8 CRITICAL slip: make slhc_remember() more robust against malicious packets
CVE-2024-49855 9.8 CRITICAL nbd: fix race between timeout and normal completion
CVE-2024-50047 9.8 CRITICAL smb: client: fix UAF in async decryption
CVE-2022-49003 9.8 CRITICAL nvme: fix SRCU protection of nvme_ns_head list
CVE-2024-50046 9.8 CRITICAL NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies()
CVE-2024-49996 9.4 CRITICAL cifs: Fix buffer overflow when parsing NFS reparse points
CVE-2024-47678 9.4 CRITICAL icmp: change the order of rate limits
CVE-2022-49017 8.8 HIGH tipc: re-fetch skb cb after tipc_msg_validate
CVE-2024-50029 8.8 HIGH Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync
CVE-2024-50041 8.8 HIGH i40e: Fix macvlan leak by synchronizing access to mac_filter_hash
CVE-2024-49939 8.8 HIGH wifi: rtw89: avoid to add interface to list twice when SER
CVE-2022-48960 8.8 HIGH net: hisilicon: Fix potential use-after-free in hix5hd2_rx()
CVE-2022-48962 8.8 HIGH net: hisilicon: Fix potential use-after-free in hisi_femac_rx()
CVE-2022-48964 8.8 HIGH ravb: Fix potential use-after-free in ravb_rx_gbeth()
CVE-2022-49015 8.8 HIGH net: hsr: Fix potential use-after-free
CVE-2022-48967 8.8 HIGH NFC: nci: Bounds check struct nfc_target arrays
CVE-2024-49930 8.8 HIGH wifi: ath11k: fix array out-of-bound access in SoC stats

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-47705

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