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CVE-2024-35793— debugfs: fix wait/cancellation handling during remove

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，该漏洞源于出现死锁问题。

CVSS 7.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1564.008 · Email Hiding Rules

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux 8c88a474357ead632b07c70bf7f119ace8c3b39e< e88b5ae01901c4a655a53158397746334778a57b affected
8c88a474357ead632b07c70bf7f119ace8c3b39e< 3d08cca5fd0aabb62b7015067ab40913b33da906 affected
8c88a474357ead632b07c70bf7f119ace8c3b39e< 952c3fce297f12c7ff59380adb66b564e2bc9b64 affected
6.7 affected
< 6.7 unaffected
6.7.12≤ 6.7.* unaffected
6.8.3≤ 6.8.* unaffected
6.9≤ * unaffected
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I. Basic Information for CVE-2024-35793

Vulnerability Information
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Vulnerability Title
debugfs: fix wait/cancellation handling during remove
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: debugfs: fix wait/cancellation handling during remove Ben Greear further reports deadlocks during concurrent debugfs remove while files are being accessed, even though the code in question now uses debugfs cancellations. Turns out that despite all the review on the locking, we missed completely that the logic is wrong: if the refcount hits zero we can finish (and need not wait for the completion), but if it doesn't we have to trigger all the cancellations. As written, we can _never_ get into the loop triggering the cancellations. Fix this, and explain it better while at it.
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，该漏洞源于出现死锁问题。
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 8c88a474357ead632b07c70bf7f119ace8c3b39e ~ e88b5ae01901c4a655a53158397746334778a57b -
Linux Linux 6.7 -

II. Public POCs for CVE-2024-35793

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III. Intelligence Information for CVE-2024-35793

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Other References for CVE-2024-35793 (3)

Same Patch Batch · Linux · 2024-05-17 · 135 CVEs total

CVE-2023-52687 9.8 CRITICAL crypto: safexcel - Add error handling for dma_map_sg() calls
CVE-2024-35856 8.8 HIGH Bluetooth: btusb: mediatek: Fix double free of skb in coredump
CVE-2024-35804 8.8 HIGH KVM: x86: Mark target gfn of emulated atomic instruction as dirty
CVE-2024-35843 8.8 HIGH iommu/vt-d: Use device rbtree in iopf reporting path
CVE-2024-35811 8.8 HIGH wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach
CVE-2024-27415 8.8 HIGH netfilter: bridge: confirm multicast packets before passing them up the stack
CVE-2024-27416 8.8 HIGH Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
CVE-2024-27404 8.2 HIGH mptcp: fix data races on remote_id
CVE-2023-52669 8.2 HIGH crypto: s390/aes - Fix buffer overread in CTR mode
CVE-2024-35834 8.2 HIGH xsk: recycle buffer in case Rx queue was full
CVE-2024-35789 8.0 HIGH wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes
CVE-2024-35830 7.8 HIGH media: tc358743: register v4l2 async device only after successful setup
CVE-2024-35835 7.8 HIGH net/mlx5e: fix a double-free in arfs_create_groups
CVE-2024-35827 7.8 HIGH io_uring/net: fix overflow check in io_recvmsg_mshot_prep()
CVE-2023-52662 7.8 HIGH drm/vmwgfx: fix a memleak in vmw_gmrid_man_get_node
CVE-2024-35817 7.8 HIGH drm/amdgpu: amdgpu_ttm_gart_bind set gtt bound flag
CVE-2024-35808 7.8 HIGH md/dm-raid: don't call md_reap_sync_thread() directly
CVE-2024-35792 7.8 HIGH crypto: rk3288 - Fix use after free in unprepare
CVE-2024-35798 7.8 HIGH btrfs: fix race in read_extent_buffer_pages()
CVE-2024-35814 7.8 HIGH swiotlb: Fix double-allocation of slots due to broken alignment handling

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-35793

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