ALSA: pcm: Don't setup bogus iov_iter for silencing
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Don't setup bogus iov_iter for silencing At transition to the iov_iter for PCM data transfer, we blindly applied the iov_iter setup also for silencing (i.e. data = NULL), and it leads to a calculation of bogus iov_iter. Fortunately this didn't cause troubles on most of architectures but it goes wrong on RISC-V now, causing a NULL dereference. Handle the NULL data case to treat the silencing in interleaved_copy() for addressing the bug above. noninterleaved_copy() has already the NULL data handling, so it doesn't need changes.
CVE-2026-64134
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-2026-64134
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": "cf393babb37a1679a1ec1d864df1090353465e23",
"lessThan": "41a766c647294842c9b17672449f8e011048cba9",
"versionType": "git"
},
{
"status": "affected",
"version": "cf393babb37a1679a1ec1d864df1090353465e23",
"lessThan": "ce836587e594af39ff048d9b29dee0f5f10692c9",
"versionType": "git"
},
{
"status": "affected",
"version": "cf393babb37a1679a1ec1d864df1090353465e23",
"lessThan": "feff0251386aa6bb180a0a1cf7c1f91ba868113d",
"versionType": "git"
},
{
"status": "affected",
"version": "cf393babb37a1679a1ec1d864df1090353465e23",
"lessThan": "c9f6768515818d71bdfc20119a81f3332c53b9c6",
"versionType": "git"
},
{
"status": "affected",
"version": "cf393babb37a1679a1ec1d864df1090353465e23",
"lessThan": "e4d3386b74fba8e01280484b67ee481ece00201e",
"versionType": "git"
}
],
"programFiles": [
"sound/core/pcm_lib.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.142",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.92",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.34",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.11",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/core/pcm_lib.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-64134
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40964 · Revision 1
- Added to Heist Feed
- Publisher date