Answer in brief
CVE-2026-98748 records a Unknown severity vulnerability in serial: 8250_bcm7271: fix use-after-free in brcmuart_remove(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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.
A CVSS score is not reported in the current record. 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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=41a469482de257ea8db43cf74b6311bd055de030 <f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e || >=41a469482de257ea8db43cf74b6311bd055de030 <e32440fa536af96bdbc61d933a7c3a920b965edc || >=41a469482de257ea8db43cf74b6311bd055de030 <0794ba5332754866b2f1c0cca668775be3ffcf0a || >=41a469482de257ea8db43cf74b6311bd055de030 <189b9dc8c96ec9486482f27c1372b04a7152175e | f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e, e32440fa536af96bdbc61d933a7c3a920b965edc, 0794ba5332754866b2f1c0cca668775be3ffcf0a, 189b9dc8c96ec9486482f27c1372b04a7152175e |
| Linux/Linuxgeneric | 5.13 | Not reported |
| Linux/Linuxgeneric | >=41a469482de257ea8db43cf74b6311bd055de030 <dd81650bec58ac70e5dfde2ec390acc1f0d1ed76 || >=41a469482de257ea8db43cf74b6311bd055de030 <f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e || >=41a469482de257ea8db43cf74b6311bd055de030 <e32440fa536af96bdbc61d933a7c3a920b965edc || >=41a469482de257ea8db43cf74b6311bd055de030 <0794ba5332754866b2f1c0cca668775be3ffcf0a || >=41a469482de257ea8db43cf74b6311bd055de030 <189b9dc8c96ec9486482f27c1372b04a7152175e | dd81650bec58ac70e5dfde2ec390acc1f0d1ed76, f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e, e32440fa536af96bdbc61d933a7c3a920b965edc, 0794ba5332754866b2f1c0cca668775be3ffcf0a, 189b9dc8c96ec9486482f27c1372b04a7152175e |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: serial: 8250_bcm7271: fix use-after-free in brcmuart_remove() brcmuart_handle_irq() starts priv->hrt to work around a receive-timeout quirk of the 8250 core when hardware flow control is enabled; the timer callback brcmuart_hrtimer_func() dereferences priv. brcmuart_remove() cancels the hrtimer before it unregisters the port, so a receive-timeout interrupt that arrives in between re-arms the timer. After devm frees priv, the callback runs on freed memory. Unregister the port before cancelling the hrtimer. serial8250_unregister_port() shuts the port down and frees its IRQ, so brcmuart_handle_irq() can no longer restart the timer, and the final hrtimer_cancel() drains any timer that was armed before or during the unregister. This issue was found by an in-house static analysis tool.
Quoted source text, attributed separately from HOL analysis.