CVE-2026-98748
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
serial: 8250_bcm7271: fix use-after-free in brcmuart_remove()
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 41a469482de257ea8db43cf74b6311bd055de030 | affected | git | dd81650bec58ac70e5dfde2ec390acc1f0d1ed76 | Unavailable | None listed |
| 41a469482de257ea8db43cf74b6311bd055de030 | affected | git | f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e | Unavailable | None listed |
| 41a469482de257ea8db43cf74b6311bd055de030 | affected | git | e32440fa536af96bdbc61d933a7c3a920b965edc | Unavailable | None listed |
| 41a469482de257ea8db43cf74b6311bd055de030 | affected | git | 0794ba5332754866b2f1c0cca668775be3ffcf0a | Unavailable | None listed |
| 41a469482de257ea8db43cf74b6311bd055de030 | affected | git | 189b9dc8c96ec9486482f27c1372b04a7152175e | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.13 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.113 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.56 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.10 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |