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CVE-2023-52488— serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO

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，该漏洞源于不禁用regmap_raw_read（）和regmap_raw_write（）函数将会损坏regmap缓存。

AI Predicted 5.3 Difficulty: Hard EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1552 · Unsecured Credentials

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux dfeae619d781dee61666d5551b93ba3be755a86b< 4e37416e4ee1b1bc17364a68973e0c63be89e611 affected
dfeae619d781dee61666d5551b93ba3be755a86b< e635f652696ef6f1230621cfd89c350cb5ec6169 affected
dfeae619d781dee61666d5551b93ba3be755a86b< 416b10d2817c94db86829fb92ad43ce7d002c573 affected
dfeae619d781dee61666d5551b93ba3be755a86b< 084c24e788d9cf29c55564de368bf5284f2bb5db affected
dfeae619d781dee61666d5551b93ba3be755a86b< aa7cb4787698add9367b19f7afc667662c9bdb23 affected
dfeae619d781dee61666d5551b93ba3be755a86b< dbf4ab821804df071c8b566d9813083125e6d97b affected
3.16 affected
< 3.16 unaffected
… +6 more rows
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I. Basic Information for CVE-2023-52488

Vulnerability Information
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Vulnerability Title
serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO The SC16IS7XX IC supports a burst mode to access the FIFOs where the initial register address is sent ($00), followed by all the FIFO data without having to resend the register address each time. In this mode, the IC doesn't increment the register address for each R/W byte. The regmap_raw_read() and regmap_raw_write() are functions which can perform IO over multiple registers. They are currently used to read/write from/to the FIFO, and although they operate correctly in this burst mode on the SPI bus, they would corrupt the regmap cache if it was not disabled manually. The reason is that when the R/W size is more than 1 byte, these functions assume that the register address is incremented and handle the cache accordingly. Convert FIFO R/W functions to use the regmap _noinc_ versions in order to remove the manual cache control which was a workaround when using the _raw_ versions. FIFO registers are properly declared as volatile so cache will not be used/updated for FIFO accesses.
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，该漏洞源于不禁用regmap_raw_read（）和regmap_raw_write（）函数将会损坏regmap缓存。
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 dfeae619d781dee61666d5551b93ba3be755a86b ~ 4e37416e4ee1b1bc17364a68973e0c63be89e611 -
Linux Linux 3.16 -

II. Public POCs for CVE-2023-52488

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III. Intelligence Information for CVE-2023-52488

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Mailing List Discussions for CVE-2023-52488 (1)

Other References for CVE-2023-52488 (6)

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-2021-47061 7.8 HIGH KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
CVE-2023-52483 7.8 HIGH mctp: perform route lookups under a RCU read-side lock
CVE-2021-47068 7.8 HIGH net/nfc: fix use-after-free llcp_sock_bind/connect
CVE-2023-52486 7.8 HIGH drm: Don't unref the same fb many times by mistake due to deadlock handling
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-2021-47060 7.8 HIGH KVM: Stop looking for coalesced MMIO zones if the bus is destroyed
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-2021-47066 7.1 HIGH async_xor: increase src_offs when dropping destination page
CVE-2021-47055 7.1 HIGH mtd: require write permissions for locking and badblock ioctls
CVE-2023-52497 7.1 HIGH erofs: fix lz4 inplace decompression
CVE-2021-47054 bus: qcom: Put child node before return
CVE-2021-47065 rtw88: Fix array overrun in rtw_get_tx_power_params()

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-2023-52488

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