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CVE-2024-42282— net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling

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mediatek组件在处理虚拟网络设备时，未能正确初始化所有字段，导致空指针取消引用。

AI Predicted 4.4 Difficulty: Trivial EPSS 0.19% · P8

Affected Version Matrix 7

VendorProduct Version RangeStatus
Linux Linux d5d57501f543f48df8b76a4af59def9a894b396f< 81e82340170ae82f8cc28e76c13a0069c0d47cb4 affected
b209bd6d0bffb8991aba568e2d9a892c86a1a43c< af6bd5c9901b13a26eaf4d57d97a813297791596 affected
b209bd6d0bffb8991aba568e2d9a892c86a1a43c< 16f3a28cf5f876a7f3550d8f4c870a7b41bcfaef affected
6.10 affected
< 6.10 unaffected
6.10.3≤ 6.10.* unaffected
6.11≤ * unaffected
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I. Basic Information for CVE-2024-42282

Vulnerability Information
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Vulnerability Title
net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: mediatek: Fix potential NULL pointer dereference in dummy net_device handling Move the freeing of the dummy net_device from mtk_free_dev() to mtk_remove(). Previously, if alloc_netdev_dummy() failed in mtk_probe(), eth->dummy_dev would be NULL. The error path would then call mtk_free_dev(), which in turn called free_netdev() assuming dummy_dev was allocated (but it was not), potentially causing a NULL pointer dereference. By moving free_netdev() to mtk_remove(), we ensure it's only called when mtk_probe() has succeeded and dummy_dev is fully allocated. This addresses a potential NULL pointer dereference detected by Smatch[1].
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mediatek组件在处理虚拟网络设备时，未能正确初始化所有字段，导致空指针取消引用。
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 d5d57501f543f48df8b76a4af59def9a894b396f ~ 81e82340170ae82f8cc28e76c13a0069c0d47cb4 -
Linux Linux 6.10 -

II. Public POCs for CVE-2024-42282

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III. Intelligence Information for CVE-2024-42282

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Patches & Fixes for CVE-2024-42282 (1)

Other References for CVE-2024-42282 (2)

Same Patch Batch · Linux · 2024-08-17 · 109 CVEs total

CVE-2024-42285 9.8 CRITICAL RDMA/iwcm: Fix a use-after-free related to destroying CM IDs
CVE-2024-42284 9.1 CRITICAL tipc: Return non-zero value from tipc_udp_addr2str() on error
CVE-2024-43847 8.8 HIGH wifi: ath12k: fix invalid memory access while processing fragmented packets
CVE-2024-43848 8.8 HIGH wifi: mac80211: fix TTLM teardown work
CVE-2024-42287 8.8 HIGH scsi: qla2xxx: Complete command early within lock
CVE-2024-42318 8.8 HIGH landlock: Don't lose track of restrictions on cred_transfer
CVE-2024-42296 7.8 HIGH f2fs: fix return value of f2fs_convert_inline_inode()
CVE-2024-42288 7.8 HIGH scsi: qla2xxx: Fix for possible memory corruption
CVE-2024-43846 7.8 HIGH lib: objagg: Fix general protection fault
CVE-2024-43845 7.8 HIGH udf: Fix bogus checksum computation in udf_rename()
CVE-2024-42293 7.8 HIGH arm64: mm: Fix lockless walks with static and dynamic page-table folding
CVE-2024-43830 7.8 HIGH leds: trigger: Unregister sysfs attributes before calling deactivate()
CVE-2024-42300 7.8 HIGH erofs: fix race in z_erofs_get_gbuf()
CVE-2024-42313 7.8 HIGH media: venus: fix use after free in vdec_close
CVE-2024-42306 7.8 HIGH udf: Avoid using corrupted block bitmap buffer
CVE-2024-42304 7.8 HIGH ext4: make sure the first directory block is not a hole
CVE-2024-42314 7.8 HIGH btrfs: fix extent map use-after-free when adding pages to compressed bio
CVE-2024-42301 7.8 HIGH dev/parport: fix the array out-of-bounds risk
CVE-2024-43840 7.8 HIGH bpf, arm64: Fix trampoline for BPF_TRAMP_F_CALL_ORIG
CVE-2024-43832 7.8 HIGH s390/uv: Don't call folio_wait_writeback() without a folio reference

Showing top 20 of 109 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-42282

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