# CVE-2026-23184: linux: In the Linux kernel, the following vulnerability has been resolved:  binder: fix UAF in binder_netlink_report()  Onew...

CVE-2026-23184 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23184 (version 6.18.10-1), released February 14, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-23184
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0014
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 14, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  binder: fix UAF in binder_netlink_report()  Oneway transactions sent to frozen targets via binder_proc_transaction() return a BR_TRANSACTION_PENDING_FROZEN error but they are still treated as successful since the target is expected to thaw at some point. It is then not safe to access 't' after BR_TRANSACTION_PENDING_FROZEN errors as the transaction could have been consumed by the now thawed target.  This is the case for binder_netlink_report() which derreferences 't' after a pending frozen error, as pointed out by the following KASAN report:    ==================================================================   BUG: KASAN: slab-use-after-free in binder_netlink_report.isra.0+0x694/0x6c8   Read of size 8 at addr ffff00000f98ba38 by task binder-util/522    CPU: 4 UID: 0 PID: 522 Comm: binder-util Not tainted 6.19.0-rc6-00015-gc03e9c42ae8f #1 PREEMPT   Hardware name: linux,dummy-virt (DT)   Call trace:    binder_netlink_report.isra.0+0x694/0x6c8    binder_transaction+0x66e4/0x79b8    binder_thread_write+0xab4/0x4440    binder_ioctl+0x1fd4/0x2940    [...]    Allocated by task 522:    __kmalloc_cache_noprof+0x17c/0x50c    binder_transaction+0x584/0x79b8    binder_thread_write+0xab4/0x4440    binder_ioctl+0x1fd4/0x2940    [...]    Freed by task 488:    kfree+0x1d0/0x420    binder_free_transaction+0x150/0x234    binder_thread_read+0x2d08/0x3ce4    binder_ioctl+0x488/0x2940    [...]   ==================================================================  Instead, make a transaction copy so the data can be safely accessed by binder_netlink_report() after a pending frozen error. While here, add a comment about not using t->buffer in binder_netlink_report().

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.18.10-1 | [DEBIAN-CVE-2026-23184](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23184.md) | Feb 14, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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