Answer in brief
CVE-2026-64468 records a High severity (CVSS 7.8) vulnerability in binder: fix UAF in binder_free_transaction(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <5602a43f251c3d75312df91a422675fc00ca3dce || >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <0be901ab1dcc4af59b88f2e324493bb283850167 || >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <48aeda9f8039e4a6971d1804578efde7f2c01eda || >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <45df558c543bb5543bacc8065fd7c567740781e5 || >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <d45ef513eed1abebfec90c3cfb6ae50c2a4182db || >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <328ccf32acb87e8bbb1fe2b065068c574e4db2bf || >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <0f15f0f6ca5df566275ce517f257af2559528b41 || >=a370003cc301d4361bae20c9ef615f89bf8d1e8a <f223d27a546c1e1f48d38fd67760e78f068fe8c4 || a4a3c070b8760f71c8311399fa9bfe67c8629bca || 22068d49d09d2b3890e19d7b2048a33340f992da || 0e3b977a8f1be01dcfa0baae68851b1f55f2a0a9 || >=4.14.136 <4.15 || >=4.19.64 <4.20 || >=5.1.15 <5.2 | 5602a43f251c3d75312df91a422675fc00ca3dce, 0be901ab1dcc4af59b88f2e324493bb283850167, 48aeda9f8039e4a6971d1804578efde7f2c01eda, 45df558c543bb5543bacc8065fd7c567740781e5, d45ef513eed1abebfec90c3cfb6ae50c2a4182db, 328ccf32acb87e8bbb1fe2b065068c574e4db2bf, 0f15f0f6ca5df566275ce517f257af2559528b41, f223d27a546c1e1f48d38fd67760e78f068fe8c4, 4.15, 4.20, 5.2 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: binder: fix UAF in binder_free_transaction() In binder_free_transaction(), the t->to_proc is read under the t->lock. However, once the t->lock is dropped, the to_proc can die in parallel. This leads to a use-after-free error when we attempt to acquire its inner lock right afterwards: ================================================================== BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x1a0 Write of size 4 at addr ffff00001125da70 by task B/672 CPU: 20 UID: 0 PID: 672 Comm: B Not tainted 7.1.0-rc6-00284-g8e65320d91cd #4 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: _raw_spin_lock+0xe4/0x1a0 binder_free_transaction+0x8c/0x320 binder_send_failed_reply+0x21c/0x2f8 binder_thread_release+0x488/0x7e0 binder_ioctl+0x12c0/0x29a0 [...] Allocated by task 675: __kmalloc_cache_noprof+0x174/0x444 binder_open+0x118/0xb70 do_dentry_open+0x374/0x1040 vfs_open+0x58/0x3bc [...] Freed by task 212: __kasan_slab_free+0x58/0x80 kfree+0x1a0/0x4a4 binder_proc_dec_tmpref+0x32c/0x5e0 binder_deferred_func+0xc48/0x104c process_one_work+0x53c/0xbc0 [...] ================================================================== To prevent this, pin the target thread (t->to_thread) to guarantee the target process remains alive. Undelivered transactions without a target thread are already safe, as the target process can only be the current context in those paths.
Quoted source text, attributed separately from HOL analysis.