ALSA: ump: do not touch legacy_rmidi before it exists
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.
CVE-2026-98086
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98086
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "37e0e14128e0685267dc5c037bf655421a6ce2ea",
"lessThan": "d6f9af093dc91dac8848a01e417b8109c651c0b2",
"versionType": "git"
},
{
"status": "affected",
"version": "37e0e14128e0685267dc5c037bf655421a6ce2ea",
"lessThan": "1c8e01792adf91879322f1ad752f1814de8b7e7d",
"versionType": "git"
},
{
"status": "affected",
"version": "37e0e14128e0685267dc5c037bf655421a6ce2ea",
"lessThan": "228075f31b141395233218712242913125ace4e0",
"versionType": "git"
},
{
"status": "affected",
"version": "37e0e14128e0685267dc5c037bf655421a6ce2ea",
"lessThan": "a4cef20cd473e0640fefd38094d4baac0ec76ae3",
"versionType": "git"
},
{
"status": "affected",
"version": "37e0e14128e0685267dc5c037bf655421a6ce2ea",
"lessThan": "adeee7187694719890aaffdc14b7e89cfd736f1d",
"versionType": "git"
}
],
"programFiles": [
"sound/core/ump.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.111",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.53",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.7",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/core/ump.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98086
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38191 · Revision 1
- Added to Heist Feed
- Publisher date