CVE-2026-99075

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: rust_binder: reschedule node refcount update on thread exit When a thread exits via BINDER_THREAD_EXIT, its pending work items are cancelled. If a thread exits while holding a pending node refcount increment (e.g. pushed as deferred work to that thread), the refcount increment was previously dropped because Node::cancel() and NodeWrapper::cancel() were no-ops. Dropping the refcount update leaves the node's delivery state and count state desynchronized, and userspace will not receive the notification, which can cause the node to never be freed from the process's nodes tree when all external references are dropped. Fix this by implementing DeliverToRead::cancel() for Node and NodeWrapper to move the pending refcount update to the process's work queue on thread exit so another thread can deliver it to userspace.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-10-23 13:17:31.550000

Last modified

2026-10-23 13:17:31.550000

View original CVE JSON

{
  "id": "CVE-2026-99075",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-10-23T13:17:31.550",
  "lastModified": "2026-10-23T13:17:31.550",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrust_binder: reschedule node refcount update on thread exit\n\nWhen a thread exits via BINDER_THREAD_EXIT, its pending work items are\ncancelled. If a thread exits while holding a pending node refcount\nincrement (e.g. pushed as deferred work to that thread), the refcount\nincrement was previously dropped because Node::cancel() and\nNodeWrapper::cancel() were no-ops.\n\nDropping the refcount update leaves the node's delivery state and count\nstate desynchronized, and userspace will not receive the notification,\nwhich can cause the node to never be freed from the process's nodes tree\nwhen all external references are dropped.\n\nFix this by implementing DeliverToRead::cancel() for Node and NodeWrapper\nto move the pending refcount update to the process's work queue on thread\nexit so another thread can deliver it to userspace."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/android/binder/node.rs",
            "drivers/android/binder/node/wrapper.rs"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "eafedbc7c050c44744fbdf80bdf3315e860b7513",
              "lessThan": "71cbad138969edecef01b28dff87d91b56db538d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "eafedbc7c050c44744fbdf80bdf3315e860b7513",
              "lessThan": "fb0f8dfc5a030ed3d60a1d03acdc99c90ee99fc1",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "eafedbc7c050c44744fbdf80bdf3315e860b7513",
              "lessThan": "2a74ccd1bcc170e66525f34e9de8652b57e2cf3d",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/android/binder/node.rs",
            "drivers/android/binder/node/wrapper.rs"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.18",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.18",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.57",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.11",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2a74ccd1bcc170e66525f34e9de8652b57e2cf3d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/71cbad138969edecef01b28dff87d91b56db538d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fb0f8dfc5a030ed3d60a1d03acdc99c90ee99fc1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}