firmware: arm_scmi: Unwind TX receiver mailbox setup failure
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unwind TX receiver mailbox setup failure mailbox_chan_setup() can request an additional unidirectional TX receiver channel after successfully acquiring the primary channel. If that second request fails, the function returns immediately and leaves the primary channel allocated. Unwind the primary mailbox channel before returning the error so probe deferral or other setup failures do not leave the channel busy for later probe attempts.
CVE-2026-93083
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-2026-93083
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": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
"lessThan": "d4cf99c7ea95accde58df34bc8636bbebb3066c2",
"versionType": "git"
},
{
"status": "affected",
"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
"lessThan": "babb017cf5e4600c94c23ea87175a0380235a3ee",
"versionType": "git"
},
{
"status": "affected",
"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
"lessThan": "717b8e972a667fc1bebe63cbcf0d58e692cbb491",
"versionType": "git"
},
{
"status": "affected",
"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
"lessThan": "9958f55eace8b43713c9fc54dcf90e7cdefee413",
"versionType": "git"
},
{
"status": "affected",
"version": "9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1",
"lessThan": "6f7c06744d53dc8e047725d411d7f915d9ec35ae",
"versionType": "git"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/transports/mailbox.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/transports/mailbox.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93083
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48708 · Revision 1
- Added to Heist Feed
- Publisher date