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CVE-2023-52494— bus: mhi: host: Add alignment check for event ring read pointer

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event ring read指针未对齐，导致存在拒绝服务（DoS）或环形缓冲区内存损坏等问题。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.28% · P19

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 19

VendorProduct Version RangeStatus
Linux Linux a1d2bd164c1c78f87968b7883964175ec41c32ae< 76ed0c6f6418cec6efe6f65a0b91f84be80b72eb affected
ec32332df7645e0ba463a08d483fe97665167071< 94991728c84f8df54fd9eec9b85855ef9057ea08 affected
ec32332df7645e0ba463a08d483fe97665167071< 2df39ac8f813860f79782807c3f7acff40b3c551 affected
ec32332df7645e0ba463a08d483fe97665167071< a9ebfc405fe1be145f414eafadcbf09506082010 affected
ec32332df7645e0ba463a08d483fe97665167071< ecf8320111822a1ae5d5fc512953eab46d543d0b affected
ec32332df7645e0ba463a08d483fe97665167071< eff9704f5332a13b08fbdbe0f84059c9e7051d5f affected
fd5f40fc887485a8b9a6806a640a0d8e0ef1afb6 affected
76879a980cd5ede4cb9a638999fb80d37bc09db5 affected
… +11 more rows
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I. Basic Information for CVE-2023-52494

Vulnerability Information
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Vulnerability Title
bus: mhi: host: Add alignment check for event ring read pointer
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there is another risk the pointer may be not aligned. Since we are expecting event ring elements are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer could lead to multiple issues like DoS or ring buffer memory corruption. So add a alignment check for event ring read pointer.
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event ring read指针未对齐，导致存在拒绝服务（DoS）或环形缓冲区内存损坏等问题。
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 a1d2bd164c1c78f87968b7883964175ec41c32ae ~ 76ed0c6f6418cec6efe6f65a0b91f84be80b72eb -
Linux Linux 5.13 -

II. Public POCs for CVE-2023-52494

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III. Intelligence Information for CVE-2023-52494

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Patches & Fixes for CVE-2023-52494 (1)

Other References for CVE-2023-52494 (5)

Same Patch Batch · Linux · 2024-02-29 · 53 CVEs total

CVE-2023-52480 9.8 CRITICAL ksmbd: fix race condition between session lookup and expire
CVE-2023-52478 8.8 HIGH HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect
CVE-2023-52479 8.8 HIGH ksmbd: fix uaf in smb20_oplock_break_ack
CVE-2024-26620 8.2 HIGH s390/vfio-ap: always filter entire AP matrix
CVE-2021-47060 7.8 HIGH KVM: Stop looking for coalesced MMIO zones if the bus is destroyed
CVE-2023-52486 7.8 HIGH drm: Don't unref the same fb many times by mistake due to deadlock handling
CVE-2023-52483 7.8 HIGH mctp: perform route lookups under a RCU read-side lock
CVE-2021-47061 7.8 HIGH KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
CVE-2021-47068 7.8 HIGH net/nfc: fix use-after-free llcp_sock_bind/connect
CVE-2023-52491 7.8 HIGH media: mtk-jpeg: Fix use after free bug due to error path handling in mtk_jpeg_dec_device_
CVE-2024-26608 7.8 HIGH ksmbd: fix global oob in ksmbd_nl_policy
CVE-2024-26610 7.8 HIGH wifi: iwlwifi: fix a memory corruption
CVE-2024-26614 7.8 HIGH tcp: make sure init the accept_queue's spinlocks once
CVE-2024-26617 7.8 HIGH fs/proc/task_mmu: move mmu notification mechanism inside mm lock
CVE-2024-26611 7.5 HIGH xsk: fix usage of multi-buffer BPF helpers for ZC XDP
CVE-2023-52497 7.1 HIGH erofs: fix lz4 inplace decompression
CVE-2021-47055 7.1 HIGH mtd: require write permissions for locking and badblock ioctls
CVE-2021-47066 7.1 HIGH async_xor: increase src_offs when dropping destination page
CVE-2021-47020 soundwire: stream: fix memory leak in stream config error path
CVE-2021-46959 spi: Fix use-after-free with devm_spi_alloc_*

Showing top 20 of 53 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-52494

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