rust_binder: reschedule node refcount update on thread exit
Summary
| CVE | CVE-2026-99075 |
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-23 13:17:31 UTC |
| Updated | 2026-10-23 13:17:31 UTC |
| 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. |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected eafedbc7c050c44744fbdf80bdf3315e860b7513 71cbad138969edecef01b28dff87d91b56db538d git |
Not specified |
| CNA |
Linux |
Linux |
affected eafedbc7c050c44744fbdf80bdf3315e860b7513 fb0f8dfc5a030ed3d60a1d03acdc99c90ee99fc1 git |
Not specified |
| CNA |
Linux |
Linux |
affected eafedbc7c050c44744fbdf80bdf3315e860b7513 2a74ccd1bcc170e66525f34e9de8652b57e2cf3d git |
Not specified |
| CNA |
Linux |
Linux |
affected 6.18 |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.57 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.2.11 7.2.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.3 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/fb0f8dfc5a030ed3d60a1d03acdc99c90ee99fc1 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/2a74ccd1bcc170e66525f34e9de8652b57e2cf3d |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/71cbad138969edecef01b28dff87d91b56db538d |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.