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CVE-2024-41013— xfs: don't walk off the end of a directory data block

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，该漏洞源于在遍历目录数据块时，未进行足够的检查以确保不会超出有效内存区域。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.22% · P13

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 82025d7f79148fe66a1594a0ebe4ab38152cf9e6< b0932e4f9da85349d1c8f2a77d2a7a7163b8511d affected
82025d7f79148fe66a1594a0ebe4ab38152cf9e6< ca96d83c93071f95cf962ce92406621a472df31b affected
82025d7f79148fe66a1594a0ebe4ab38152cf9e6< 0c7fcdb6d06cdf8b19b57c17605215b06afa864a affected
3.8 affected
< 3.8 unaffected
6.1.142≤ 6.1.* unaffected
6.6.68≤ 6.6.* unaffected
6.11≤ * unaffected
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I. Basic Information for CVE-2024-41013

Vulnerability Information
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Vulnerability Title
xfs: don't walk off the end of a directory data block
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: xfs: don't walk off the end of a directory data block This adds sanity checks for xfs_dir2_data_unused and xfs_dir2_data_entry to make sure don't stray beyond valid memory region. Before patching, the loop simply checks that the start offset of the dup and dep is within the range. So in a crafted image, if last entry is xfs_dir2_data_unused, we can change dup->length to dup->length-1 and leave 1 byte of space. In the next traversal, this space will be considered as dup or dep. We may encounter an out of bound read when accessing the fixed members. In the patch, we make sure that the remaining bytes large enough to hold an unused entry before accessing xfs_dir2_data_unused and xfs_dir2_data_unused is XFS_DIR2_DATA_ALIGN byte aligned. We also make sure that the remaining bytes large enough to hold a dirent with a single-byte name before accessing xfs_dir2_data_entry.
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，该漏洞源于在遍历目录数据块时，未进行足够的检查以确保不会超出有效内存区域。
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 82025d7f79148fe66a1594a0ebe4ab38152cf9e6 ~ b0932e4f9da85349d1c8f2a77d2a7a7163b8511d -
Linux Linux 3.8 -

II. Public POCs for CVE-2024-41013

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III. Intelligence Information for CVE-2024-41013

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Patches & Fixes for CVE-2024-41013 (1)

Other References for CVE-2024-41013 (1)

Same Patch Batch · Linux · 2024-07-29 · 121 CVEs total

CVE-2024-41040 9.8 CRITICAL net/sched: Fix UAF when resolving a clash
CVE-2024-41081 9.8 CRITICAL ila: block BH in ila_output()
CVE-2024-41073 9.8 CRITICAL nvme: avoid double free special payload
CVE-2024-41091 8.8 HIGH tun: add missing verification for short frame
CVE-2024-41046 8.8 HIGH net: ethernet: lantiq_etop: fix double free in detach
CVE-2024-42083 8.8 HIGH ionic: fix kernel panic due to multi-buffer handling
CVE-2024-41090 8.8 HIGH tap: add missing verification for short frame
CVE-2024-41062 8.8 HIGH bluetooth/l2cap: sync sock recv cb and release
CVE-2024-41045 7.8 HIGH bpf: Defer work in bpf_timer_cancel_and_free
CVE-2024-41096 7.8 HIGH PCI/MSI: Fix UAF in msi_capability_init
CVE-2024-41049 7.8 HIGH filelock: fix potential use-after-free in posix_lock_inode
CVE-2024-41051 7.8 HIGH cachefiles: wait for ondemand_object_worker to finish when dropping object
CVE-2024-41057 7.8 HIGH cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()
CVE-2024-41060 7.8 HIGH drm/radeon: check bo_va->bo is non-NULL before using it
CVE-2024-41059 7.8 HIGH hfsplus: fix uninit-value in copy_name
CVE-2024-41064 7.8 HIGH powerpc/eeh: avoid possible crash when edev->pdev changes
CVE-2024-42075 7.8 HIGH bpf: Fix remap of arena.
CVE-2024-42066 7.8 HIGH drm/xe: Fix potential integer overflow in page size calculation
CVE-2024-42064 7.8 HIGH drm/amd/display: Skip pipe if the pipe idx not set properly
CVE-2024-41086 7.8 HIGH bcachefs: Fix sb_field_downgrade validation

Showing top 20 of 121 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-41013

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