Not yet scoredPublished Sep 25, 2026

CVE-2026-98086ALSA: ump: do not touch legacy_rmidi before it exists

Updated under an hour ago (Oct 27, 2026, 5:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ALSA: ump: do not touch legacy_rmidi before it exists snd_ump_parse_endpoint() sets ump->parsed on every exit, including error, before the caller attaches the legacy rawmidi device. ump_handle_ep_name_msg() then treats parsed as "legacy_rmidi is live" and calls ump_legacy_set_rawmidi_name(), which snprintf()s into ump->legacy_rmidi->name. If a UMP packet arrives in that window (IRQ path from snd_ump_receive), legacy_rmidi is still NULL (KASAN null-ptr-deref in snprintf). Guard the legacy helpers. parsed only means endpoint info was parsed, not that legacy_rmidi exists.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Undergoing Analysis
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 37e0e14128e0685267dc5c037bf655421a6ce2ea before d6f9af093dc91dac8848a01e417b8109c651c0b2; 37e0e14128e0685267dc5c037bf655421a6ce2ea builds before 1c8e01792adf91879322f1ad752f1814de8b7e7d; from 37e0e14128e0685267dc5c037bf655421a6ce2ea before 228075f31b141395233218712242913125ace4e0; from 37e0e14128e0685267dc5c037bf655421a6ce2ea before a4cef20cd473e0640fefd38094d4baac0ec76ae3; from 37e0e14128e0685267dc5c037bf655421a6ce2ea before adeee7187694719890aaffdc14b7e89cfd736f1d	CNA record

References

References

https://git.kernel.org/stable/c/d6f9af093dc91dac8848a01e417b8109c651c0b2
https://git.kernel.org/stable/c/1c8e01792adf91879322f1ad752f1814de8b7e7d
https://git.kernel.org/stable/c/228075f31b141395233218712242913125ace4e0
https://git.kernel.org/stable/c/a4cef20cd473e0640fefd38094d4baac0ec76ae3
https://git.kernel.org/stable/c/adeee7187694719890aaffdc14b7e89cfd736f1d

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.