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CVE-2024-35825— usb: gadget: ncm: Fix handling of zero block length packets

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。攻击者利用该漏洞导致内核崩溃。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.23% · P13

Possible ATT&CK Techniques 1 AI

T1599 · Network Boundary Bridging

Affected Version Matrix 27

VendorProduct Version RangeStatus
Linux Linux ff3ba016263ee93a1c6209bf5ab1599de7ab1512< e2dbfea520e60d58e0c498ba41bde10452257779 affected
e7ca00f35d8a17af1ae19d529193ebc21bfda164< a766761d206e7c36d7526e0ae749949d17ca582c affected
17c653d4913bbc50d284aa96cf12bfc63e41ee5c< ef846cdbd100f7f9dc045e8bcd7fe4b3a3713c03 affected
7014807fb7efa169a47a7a0a0a41d2c513925de0< 92b051b87658df7649ffcdef522593f21a2b296b affected
49fbc18378ae72a47feabee97fdb86f3cea09765< 7664ee8bd80309b90d53488b619764f0a057f2b7 affected
427694cfaafa565a3db5c5ea71df6bc095dca92f< a0f77b5d6067285b8eca0ee3bd1e448a6258026f affected
427694cfaafa565a3db5c5ea71df6bc095dca92f< 6b2c73111a252263807b7598682663dc33aa4b4c affected
427694cfaafa565a3db5c5ea71df6bc095dca92f< f90ce1e04cbcc76639d6cba0fdbd820cd80b3c70 affected
… +19 more rows
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I. Basic Information for CVE-2024-35825

Vulnerability Information
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Vulnerability Title
usb: gadget: ncm: Fix handling of zero block length packets
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: ncm: Fix handling of zero block length packets While connecting to a Linux host with CDC_NCM_NTB_DEF_SIZE_TX set to 65536, it has been observed that we receive short packets, which come at interval of 5-10 seconds sometimes and have block length zero but still contain 1-2 valid datagrams present. According to the NCM spec: "If wBlockLength = 0x0000, the block is terminated by a short packet. In this case, the USB transfer must still be shorter than dwNtbInMaxSize or dwNtbOutMaxSize. If exactly dwNtbInMaxSize or dwNtbOutMaxSize bytes are sent, and the size is a multiple of wMaxPacketSize for the given pipe, then no ZLP shall be sent. wBlockLength= 0x0000 must be used with extreme care, because of the possibility that the host and device may get out of sync, and because of test issues. wBlockLength = 0x0000 allows the sender to reduce latency by starting to send a very large NTB, and then shortening it when the sender discovers that there’s not sufficient data to justify sending a large NTB" However, there is a potential issue with the current implementation, as it checks for the occurrence of multiple NTBs in a single giveback by verifying if the leftover bytes to be processed is zero or not. If the block length reads zero, we would process the same NTB infintely because the leftover bytes is never zero and it leads to a crash. Fix this by bailing out if block length reads zero.
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。攻击者利用该漏洞导致内核崩溃。
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 ff3ba016263ee93a1c6209bf5ab1599de7ab1512 ~ e2dbfea520e60d58e0c498ba41bde10452257779 -
Linux Linux 6.6 -

II. Public POCs for CVE-2024-35825

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III. Intelligence Information for CVE-2024-35825

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Mailing List Discussions for CVE-2024-35825 (2)

Other References for CVE-2024-35825 (8)

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-2024-35793 7.8 HIGH debugfs: fix wait/cancellation handling during remove
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-2024-35825

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