CVE-2026-98086
Description
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.
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Affected products
3- osv-coords2 versions
< 7.2.9-1.1+ 1 more
- (no CPE)range: < 7.2.9-1.1
- (no CPE)range: >= 6.5.0, < 6.6.158
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/1c8e01792adf91879322f1ad752f1814de8b7e7dnvd
- git.kernel.org/stable/c/228075f31b141395233218712242913125ace4e0nvd
- git.kernel.org/stable/c/a4cef20cd473e0640fefd38094d4baac0ec76ae3nvd
- git.kernel.org/stable/c/adeee7187694719890aaffdc14b7e89cfd736f1dnvd
- git.kernel.org/stable/c/d6f9af093dc91dac8848a01e417b8109c651c0b2nvd
News mentions
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