CVE-2023-54220High· 7.8▾ TwilightIn 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 …
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 42.9 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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().
Linux >= 490bf37eaabb0a857ed1ae8e75d8854e41662f1c < 66f3e55960698c874b0598277913b478ecd29573Linux >= c9e080c3005fd183c56ff8f4d75edb5da0765d2c < 720a297b334e85d34099e83d1f375b92c3efedd6Linux >= d5cd2928d31042a7c0a01464f9a8d95be736421d < b653289ca6460a6552c8590b75dfa84a0140a46bLinux >= 2c86a1305c1406f45ea780d06953c484ea1d9e6e < bd70d0b28010d560a8be96b44fea86fe2ba016aeLinux >= 1ba5594739d858e524ff0f398ee1ebfe0a8b9d41 < 18e27df4f2b4e257c317ba8076f31a888f6cc64bLinux >= af4d6dbb1a92ea424ad1ba1d0c88c7fa2345d872 < 0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6cLinux >= 04e82793f068d2f0ffe62fcea03d007a8cdc16a7 < 375806616f8c772c33d40e112530887b37c1a816Linux >= 04e82793f068d2f0ffe62fcea03d007a8cdc16a7 < dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534Linux 8e596aed5f2f98cf3e6e98d6fe1d689f4a319308Linux >= 4.14.316 < 4.14.324Linux >= 4.19.284 < 4.19.293Linux >= 5.4.244 < 5.4.255Linux >= 5.10.181 < 5.10.192Linux >= 5.15.113 < 5.15.128Linux >= 6.1.30 < 6.1.47Linux >= 6.3.4 < 6.4Linux 6.4Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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