{"id":"CVE-2026-98748","revision":"60d976d0e41f473abe3749b5da088776","records":[{"revision":"60d976d0e41f473abe3749b5da088776","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98748","aliases":[],"title":"serial: 8250_bcm7271: fix use-after-free in brcmuart_remove()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_bcm7271: fix use-after-free in brcmuart_remove()\n\nbrcmuart_handle_irq() starts priv->hrt to work around a receive-timeout\nquirk of the 8250 core when hardware flow control is enabled; the timer\ncallback brcmuart_hrtimer_func() dereferences priv.\n\nbrcmuart_remove() cancels the hrtimer before it unregisters the port, so\na receive-timeout interrupt that arrives in between re-arms the timer.\nAfter devm frees priv, the callback runs on freed memory.\n\nUnregister the port before cancelling the hrtimer.\nserial8250_unregister_port() shuts the port down and frees its IRQ, so\nbrcmuart_handle_irq() can no longer restart the timer, and the final\nhrtimer_cancel() drains any timer that was armed before or during the\nunregister.\n\nThis issue was found by an in-house static analysis tool.","state":0,"publishedAt":"2026-10-18T15:47:33.446+00:00","modifiedAt":"2026-10-21T12:56:23.396+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/tty/serial/8250/8250_bcm7271.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"41a469482de257ea8db43cf74b6311bd055de030\",\n                            \"lessThan\": \"dd81650bec58ac70e5dfde2ec390acc1f0d1ed76\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"41a469482de257ea8db43cf74b6311bd055de030\",\n                            \"lessThan\": \"f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"41a469482de257ea8db43cf74b6311bd055de030\",\n                            \"lessThan\": \"e32440fa536af96bdbc61d933a7c3a920b965edc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"41a469482de257ea8db43cf74b6311bd055de030\",\n                            \"lessThan\": \"0794ba5332754866b2f1c0cca668775be3ffcf0a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"41a469482de257ea8db43cf74b6311bd055de030\",\n                            \"lessThan\": \"189b9dc8c96ec9486482f27c1372b04a7152175e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/tty/serial/8250/8250_bcm7271.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.113\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.56\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.10\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/dd81650bec58ac70e5dfde2ec390acc1f0d1ed76","https://git.kernel.org/stable/c/f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e","https://git.kernel.org/stable/c/e32440fa536af96bdbc61d933a7c3a920b965edc","https://git.kernel.org/stable/c/0794ba5332754866b2f1c0cca668775be3ffcf0a","https://git.kernel.org/stable/c/189b9dc8c96ec9486482f27c1372b04a7152175e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98748","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98748","identifiers":["CVE-2026-98748"]},"retained":false,"historicalAffected":[]}],"coverage":[]}