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CVE-2024-47668— lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()

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lib组件中的generic-radix-tree在增加树深度时存在竞态条件，可能导致使用旧的根节点。

CVSS 7.8 · High EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux ba20ba2e3743bac786dff777954c11930256075e< 0f27f4f445390cb7f73d4209cb2bf32834dc53da affected
ba20ba2e3743bac786dff777954c11930256075e< 99418ec776a39609f50934720419e0b464ca2283 affected
ba20ba2e3743bac786dff777954c11930256075e< ad5ee9feebc2eb8cfc76ed74a2d6e55343b0e169 affected
ba20ba2e3743bac786dff777954c11930256075e< ebeff038744c498a036e7a92eb8e433ae0a386d7 affected
ba20ba2e3743bac786dff777954c11930256075e< d942e855324a60107025c116245095632476613e affected
ba20ba2e3743bac786dff777954c11930256075e< 0f078f8ca93b28a34e20bd050f12cd4efeee7c0f affected
ba20ba2e3743bac786dff777954c11930256075e< b2f11c6f3e1fc60742673b8675c95b78447f3dae affected
5.1 affected
… +8 more rows
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I. Basic Information for CVE-2024-47668

Vulnerability Information
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Vulnerability Title
lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path.
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lib组件中的generic-radix-tree在增加树深度时存在竞态条件，可能导致使用旧的根节点。
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 ba20ba2e3743bac786dff777954c11930256075e ~ 0f27f4f445390cb7f73d4209cb2bf32834dc53da -
Linux Linux 5.1 -

II. Public POCs for CVE-2024-47668

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III. Intelligence Information for CVE-2024-47668

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Patches & Fixes for CVE-2024-47668 (4)

Same Patch Batch · Linux · 2024-10-09 · 17 CVEs total

CVE-2024-47659 9.1 CRITICAL smack: tcp: ipv4, fix incorrect labeling
CVE-2024-47670 7.8 HIGH ocfs2: add bounds checking to ocfs2_xattr_find_entry()
CVE-2024-47658 7.5 HIGH crypto: stm32/cryp - call finalize with bh disabled
CVE-2024-47667 7.3 HIGH PCI: keystone: Add workaround for Errata #i2037 (AM65x SR 1.0)
CVE-2024-47669 7.3 HIGH nilfs2: fix state management in error path of log writing function
CVE-2024-46870 drm/amd/display: Disable DMCUB timeout for DCN35
CVE-2024-46871 drm/amd/display: Correct the defined value for AMDGPU_DMUB_NOTIFICATION_MAX
CVE-2024-47660 fsnotify: clear PARENT_WATCHED flags lazily
CVE-2024-47662 drm/amd/display: Remove register from DCN35 DMCUB diagnostic collection
CVE-2024-47661 drm/amd/display: Avoid overflow from uint32_t to uint8_t
CVE-2024-47663 staging: iio: frequency: ad9834: Validate frequency parameter value
CVE-2024-47664 spi: hisi-kunpeng: Add verification for the max_frequency provided by the firmware
CVE-2024-47665 i3c: mipi-i3c-hci: Error out instead on BUG_ON() in IBI DMA setup
CVE-2024-47666 scsi: pm80xx: Set phy->enable_completion only when we wait for it
CVE-2024-47671 USB: usbtmc: prevent kernel-usb-infoleak
CVE-2024-47673 wifi: iwlwifi: mvm: pause TCM when the firmware is stopped

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-47668

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