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CVE-2023-54255— sh: dma: Fix DMA channel offset calculation

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DMA通道偏移计算错误，可能导致内核崩溃。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.19% · P9

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 7f47c7189b3e8f19a589f77a3ad169d7b691b582< bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad affected
7f47c7189b3e8f19a589f77a3ad169d7b691b582< 479380acfa63247b5ac62476138f847aefc62692 affected
7f47c7189b3e8f19a589f77a3ad169d7b691b582< 4989627157735c1f1619f08e5bc1592418e7c878 affected
7f47c7189b3e8f19a589f77a3ad169d7b691b582< d1c946552af299f4fa85bf7da15e328123771128 affected
7f47c7189b3e8f19a589f77a3ad169d7b691b582< 196f6c71905aa384c0177acf194a1144d480333b affected
7f47c7189b3e8f19a589f77a3ad169d7b691b582< 8fb11fa4805699c6b73a9c8a9d45807f9874abe3 affected
7f47c7189b3e8f19a589f77a3ad169d7b691b582< e9e33faea104381bac80ac79328f0540fc2969f2 affected
7f47c7189b3e8f19a589f77a3ad169d7b691b582< e82e47584847129a20b8c9f4a1dcde09374fb0e0 affected
… +10 more rows
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I. Basic Information for CVE-2023-54255

Vulnerability Information
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Vulnerability Title
sh: dma: Fix DMA channel offset calculation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sh: dma: Fix DMA channel offset calculation Various SoCs of the SH3, SH4 and SH4A family, which use this driver, feature a differing number of DMA channels, which can be distributed between up to two DMAC modules. The existing implementation fails to correctly accommodate for all those variations, resulting in wrong channel offset calculations and leading to kernel panics. Rewrite dma_base_addr() in order to properly calculate channel offsets in a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that the correct DMAC module base is selected for the DMAOR register.
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DMA通道偏移计算错误，可能导致内核崩溃。
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 7f47c7189b3e8f19a589f77a3ad169d7b691b582 ~ bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad -
Linux Linux 3.5 -

II. Public POCs for CVE-2023-54255

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III. Intelligence Information for CVE-2023-54255

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Other References for CVE-2023-54255 (8)

Same Patch Batch · Linux · 2025-12-30 · 244 CVEs total

CVE-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
CVE-2023-54223 9.8 CRITICAL net/mlx5e: xsk: Fix invalid buffer access for legacy rq
CVE-2023-54237 9.8 CRITICAL net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link()
CVE-2023-54257 9.8 CRITICAL net: macb: fix a memory corruption in extended buffer descriptor mode
CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
CVE-2023-54269 9.8 CRITICAL SUNRPC: double free xprt_ctxt while still in use
CVE-2023-54280 9.8 CRITICAL cifs: fix potential race when tree connecting ipc
CVE-2023-54292 9.8 CRITICAL RDMA/irdma: Fix data race on CQP request done
CVE-2023-54203 9.1 CRITICAL ksmbd: fix slab-out-of-bounds in init_smb2_rsp_hdr
CVE-2022-50880 8.8 HIGH wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
CVE-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
CVE-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54318 8.8 HIGH net/smc: use smc_lgr_list.lock to protect smc_lgr_list.list iterate in smcr_port_add
CVE-2023-54250 8.2 HIGH ksmbd: avoid out of bounds access in decode_preauth_ctxt()
CVE-2023-54164 8.0 HIGH Bluetooth: ISO: fix iso_conn related locking and validity issues
CVE-2023-54206 7.8 HIGH net/sched: flower: fix filter idr initialization
CVE-2023-54202 7.8 HIGH drm/i915: fix race condition UAF in i915_perf_add_config_ioctl
CVE-2023-54210 7.8 HIGH Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
CVE-2023-54243 7.8 HIGH netfilter: ebtables: fix table blob use-after-free

Showing top 20 of 244 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-54255

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