CVE-2026-93082

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unwind P2A receiver mailbox setup failure mailbox_chan_setup() can request an additional P2A receiver channel after successfully acquiring the primary P2A channel. If that later 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.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b
https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f
https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31
https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d

Configurations

No configuration.

History

17 Sep 2026, 17:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:18

Updated : 2026-09-17 17:18

NVD link : CVE-2026-93082

Mitre link : CVE-2026-93082

CVE.ORG link : CVE-2026-93082

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-93082", "cveTags": [], "metrics": {}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "4c2a5d72357e5c6743c23b59615da287140d9d31", "versionType": "git"}, {"status": "affected", "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "3b0b02134ab90202af80b102fa37196b9689e86f", "versionType": "git"}, {"status": "affected", "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "3515aed7fe424b79c49ff9cd51f7802a64a4ab7b", "versionType": "git"}, {"status": "affected", "version": "fa8b28ba22d95be4d2dd3c37fbdbdc066af82941", "lessThan": "f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d", "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": "6.11"}, {"status": "unaffected", "version": "0", "lessThan": "6.11", "versionType": "semver"}, {"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-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/firmware/arm_scmi/transports/mailbox.c"], "defaultStatus": "affected"}]}], "published": "2026-09-17T17:18:02.193", "references": [{"url": "https://git.kernel.org/stable/c/3515aed7fe424b79c49ff9cd51f7802a64a4ab7b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3b0b02134ab90202af80b102fa37196b9689e86f", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/4c2a5d72357e5c6743c23b59615da287140d9d31", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f3e3773c4e5e96549d7540d8ddeb4fcd534f6f1d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scmi: Unwind P2A receiver mailbox setup failure\n\nmailbox_chan_setup() can request an additional P2A receiver channel after\nsuccessfully acquiring the primary P2A channel. If that later request\nfails, the function returns immediately and leaves the primary channel\nallocated.\n\nUnwind the primary mailbox channel before returning the error so probe\ndeferral or other setup failures do not leave the channel busy for later\nprobe attempts."}], "lastModified": "2026-09-17T17:18:02.193", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}