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CVE-2023-54220— serial: 8250: Fix oops for port->pm on uart_change_pm()

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，该漏洞源于端口电源管理函数未正确清除，可能导致内核页错误。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 26

VendorProduct Version RangeStatus
Linux Linux 490bf37eaabb0a857ed1ae8e75d8854e41662f1c< 66f3e55960698c874b0598277913b478ecd29573 affected
c9e080c3005fd183c56ff8f4d75edb5da0765d2c< 720a297b334e85d34099e83d1f375b92c3efedd6 affected
d5cd2928d31042a7c0a01464f9a8d95be736421d< b653289ca6460a6552c8590b75dfa84a0140a46b affected
2c86a1305c1406f45ea780d06953c484ea1d9e6e< bd70d0b28010d560a8be96b44fea86fe2ba016ae affected
1ba5594739d858e524ff0f398ee1ebfe0a8b9d41< 18e27df4f2b4e257c317ba8076f31a888f6cc64b affected
af4d6dbb1a92ea424ad1ba1d0c88c7fa2345d872< 0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c affected
04e82793f068d2f0ffe62fcea03d007a8cdc16a7< 375806616f8c772c33d40e112530887b37c1a816 affected
04e82793f068d2f0ffe62fcea03d007a8cdc16a7< dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534 affected
… +18 more rows
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I. Basic Information for CVE-2023-54220

Vulnerability Information
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Vulnerability Title
serial: 8250: Fix oops for port->pm on uart_change_pm()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: serial: 8250: Fix oops for port->pm on uart_change_pm() Unloading a hardware specific 8250 driver can produce error "Unable to handle kernel paging request at virtual address" about ten seconds after unloading the driver. This happens on uart_hangup() calling uart_change_pm(). Turns out commit 04e82793f068 ("serial: 8250: Reinit port->pm on port specific driver unbind") was only a partial fix. If the hardware specific driver has initialized port->pm function, we need to clear port->pm too. Just reinitializing port->ops does not do this. Otherwise serial8250_pm() will call port->pm() instead of serial8250_do_pm().
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，该漏洞源于端口电源管理函数未正确清除，可能导致内核页错误。
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 490bf37eaabb0a857ed1ae8e75d8854e41662f1c ~ 66f3e55960698c874b0598277913b478ecd29573 -
Linux Linux 6.4 -

II. Public POCs for CVE-2023-54220

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III. Intelligence Information for CVE-2023-54220

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Other References for CVE-2023-54220 (8)

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

CVE-2023-54258 9.8 CRITICAL cifs: fix potential oops in cifs_oplock_break
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-2023-54269 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-2023-54184 9.8 CRITICAL scsi: target: iscsit: Free cmds before session free
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-2023-54162 8.8 HIGH ksmbd: fix possible memory leak in smb2_lock()
CVE-2023-54262 8.8 HIGH net/mlx5e: Don't clone flow post action attributes second time
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-2023-54214 8.8 HIGH Bluetooth: L2CAP: Fix potential user-after-free
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-2023-54201 7.8 HIGH RDMA/efa: Fix wrong resources deallocation order
CVE-2022-50841 7.8 HIGH fs/ntfs3: Add overflow check for attribute size
CVE-2023-54206 7.8 HIGH net/sched: flower: fix filter idr initialization
CVE-2023-54210 7.8 HIGH Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()

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-2023-54220

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