CVE-2026-98086ALSA: ump: do not touch legacy_rmidi before it exists
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
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
- 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.