CVE-2026-53273— tee: optee 客户端退出前避免使用释放漏洞
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一、 漏洞 CVE-2026-53273 基础信息
漏洞信息
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Vulnerability Title
tee: optee: prevent use-after-free when the client exits before the supplicant
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: tee: optee: prevent use-after-free when the client exits before the supplicant Commit 70b0d6b0a199 ("tee: optee: Fix supplicant wait loop") made the client wait as killable so it can be interrupted during shutdown or after a supplicant crash. This changes the original lifetime expectations: the client task can now terminate while the supplicant is still processing its request. If the client exits first it removes the request from its queue and kfree()s it, while the request ID remains in supp->idr. A subsequent lookup on the supplicant path then dereferences freed memory, leading to a use-after-free. Serialise access to the request with supp->mutex: * Hold supp->mutex in optee_supp_recv() and optee_supp_send() while looking up and touching the request. * Let optee_supp_thrd_req() notice that the client has terminated and signal optee_supp_send() accordingly. With these changes the request cannot be freed while the supplicant still has a reference, eliminating the race.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
受影响产品
二、漏洞 CVE-2026-53273 的公开POC
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CVE-2026-53273 补丁与修复 (4)
CVE-2026-53273 其他参考 (4)
同批安全公告 · Linux · 2026-06-25 · 共 147 条
| CVE-2026-53185 | Linux zram zram_bvec_write_partial 函数 Use-After-Free 漏洞 | |
| CVE-2026-53167 | fuse 漏洞：限制 FUSE_NOTIFY_RETRIEVE 仅限 uptodate 文件 | |
| CVE-2026-53168 | fuse目录页缓存操作拒绝漏洞 | |
| CVE-2026-53169 | accel/ethosu：拒绝用户空间NPU_OP_RESIZE命令 | |
| CVE-2026-53171 | 加速伦理：修复dma_length()中的算术问题 | |
| CVE-2026-53170 | Acceler/ethosu：拒绝长度未初始化的DMA命令漏洞 | |
| CVE-2026-53172 | Ethos-U NPU驱动IFM区域索引越界漏洞 | |
| CVE-2026-53174 | overlay文件系统o v l缓存获取后错误码未清零漏洞 | |
| CVE-2026-53173 | Accelerate Ethos-U 命令流校验越界写入漏洞 | |
| CVE-2026-53175 | Linux inet frag使用完后释放漏洞 | |
| CVE-2026-53177 | bnxt_en 驱动空指针解引用漏洞 | |
| CVE-2026-53176 | IB/isert: 拒绝短于ISER_HEADERS_LEN的登录PDU漏洞 | |
| CVE-2026-53178 | rtl8723bs驱动ie_length减法越界漏洞 | |
| CVE-2026-53180 | Linux 内核 tmigr_handle_remote_up() 活锁漏洞 | |
| CVE-2026-53179 | RTL8723BS rtw_update_protection 缓冲区越界读取漏洞 | |
| CVE-2026-53181 | vsock/vmci 握手失败时 sk_ack_backlog 泄漏漏洞 | |
| CVE-2026-53182 | wifi: nl80211 拒绝过大的 EMA RNR 列表 | |
| CVE-2026-53183 | MPTCP 子流接收窗口收缩漏洞 | |
| CVE-2026-53184 | UDP sockmap裁决前清除skb->dev | |
| CVE-2026-53196 | USB io_ti get_manuf_info()堆溢出漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-53273
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