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CVE-2024-47669— nilfs2: fix state management in error path of log writing function

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，该漏洞源于在写入日志函数中的错误路径管理不当，导致在失败时未清除写回标志和NILFS_I_COLLECTED标志。

CVSS 7.3 · High EPSS 0.21% · P11

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux a694291a6211537189c6080f77f63cdabfc9b63e< 40a2757de2c376ef8a08d9ee9c81e77f3c750adf affected
a694291a6211537189c6080f77f63cdabfc9b63e< 036441e8438b29111fa75008f0ce305fb4e83c0a affected
a694291a6211537189c6080f77f63cdabfc9b63e< efdde00d4a1ef10bb71e09ebc67823a3d3ad725b affected
a694291a6211537189c6080f77f63cdabfc9b63e< 3e349d7191f0688fc9808ef24fd4e4b4ef5ca876 affected
a694291a6211537189c6080f77f63cdabfc9b63e< 30562eff4a6dd35c4b5be9699ef61ad9f5f20a06 affected
a694291a6211537189c6080f77f63cdabfc9b63e< 0a1a961bde4351dc047ffdeb2f1311ca16a700cc affected
a694291a6211537189c6080f77f63cdabfc9b63e< 74866c16ea2183f52925fa5d76061a1fe7f7737b affected
a694291a6211537189c6080f77f63cdabfc9b63e< 6576dd6695f2afca3f4954029ac4a64f82ba60ab affected
… +10 more rows
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I. Basic Information for CVE-2024-47669

Vulnerability Information
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Vulnerability Title
nilfs2: fix state management in error path of log writing function
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix state management in error path of log writing function After commit a694291a6211 ("nilfs2: separate wait function from nilfs_segctor_write") was applied, the log writing function nilfs_segctor_do_construct() was able to issue I/O requests continuously even if user data blocks were split into multiple logs across segments, but two potential flaws were introduced in its error handling. First, if nilfs_segctor_begin_construction() fails while creating the second or subsequent logs, the log writing function returns without calling nilfs_segctor_abort_construction(), so the writeback flag set on pages/folios will remain uncleared. This causes page cache operations to hang waiting for the writeback flag. For example, truncate_inode_pages_final(), which is called via nilfs_evict_inode() when an inode is evicted from memory, will hang. Second, the NILFS_I_COLLECTED flag set on normal inodes remain uncleared. As a result, if the next log write involves checkpoint creation, that's fine, but if a partial log write is performed that does not, inodes with NILFS_I_COLLECTED set are erroneously removed from the "sc_dirty_files" list, and their data and b-tree blocks may not be written to the device, corrupting the block mapping. Fix these issues by uniformly calling nilfs_segctor_abort_construction() on failure of each step in the loop in nilfs_segctor_do_construct(), having it clean up logs and segment usages according to progress, and correcting the conditions for calling nilfs_redirty_inodes() to ensure that the NILFS_I_COLLECTED flag is cleared.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/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，该漏洞源于在写入日志函数中的错误路径管理不当，导致在失败时未清除写回标志和NILFS_I_COLLECTED标志。
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 a694291a6211537189c6080f77f63cdabfc9b63e ~ 40a2757de2c376ef8a08d9ee9c81e77f3c750adf -
Linux Linux 2.6.33 -

II. Public POCs for CVE-2024-47669

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III. Intelligence Information for CVE-2024-47669

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Patches & Fixes for CVE-2024-47669 (5)

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

CVE-2024-47659 9.1 CRITICAL smack: tcp: ipv4, fix incorrect labeling
CVE-2024-47668 7.8 HIGH lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
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-2024-46870 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-2024-47669

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