Answer in brief
CVE-2023-54220 records a High severity (CVSS 7.8) vulnerability in serial: 8250: Fix oops for port->pm on uart_change_pm(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 6.4 | Not reported |
| Linux/Linuxgeneric | >=490bf37eaabb0a857ed1ae8e75d8854e41662f1c <66f3e55960698c874b0598277913b478ecd29573 || >=c9e080c3005fd183c56ff8f4d75edb5da0765d2c <720a297b334e85d34099e83d1f375b92c3efedd6 || >=d5cd2928d31042a7c0a01464f9a8d95be736421d <b653289ca6460a6552c8590b75dfa84a0140a46b || >=2c86a1305c1406f45ea780d06953c484ea1d9e6e <bd70d0b28010d560a8be96b44fea86fe2ba016ae || >=1ba5594739d858e524ff0f398ee1ebfe0a8b9d41 <18e27df4f2b4e257c317ba8076f31a888f6cc64b || >=af4d6dbb1a92ea424ad1ba1d0c88c7fa2345d872 <0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c || >=04e82793f068d2f0ffe62fcea03d007a8cdc16a7 <375806616f8c772c33d40e112530887b37c1a816 || >=04e82793f068d2f0ffe62fcea03d007a8cdc16a7 <dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534 || 8e596aed5f2f98cf3e6e98d6fe1d689f4a319308 || >=4.14.316 <4.14.324 || >=4.19.284 <4.19.293 || >=5.4.244 <5.4.255 || >=5.10.181 <5.10.192 || >=5.15.113 <5.15.128 || >=6.1.30 <6.1.47 || >=6.3.4 <6.4 | 66f3e55960698c874b0598277913b478ecd29573, 720a297b334e85d34099e83d1f375b92c3efedd6, b653289ca6460a6552c8590b75dfa84a0140a46b, bd70d0b28010d560a8be96b44fea86fe2ba016ae, 18e27df4f2b4e257c317ba8076f31a888f6cc64b, 0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c, 375806616f8c772c33d40e112530887b37c1a816, dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534, 4.14.324, 4.19.293, 5.4.255, 5.10.192, 5.15.128, 6.1.47, 6.4 |
Published upstream
Dec 30, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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().
Quoted source text, attributed separately from HOL analysis.