CVE-2026-53192— ALSA 定时器 snd_timer_user_params 函数空指针释放漏洞
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一、 漏洞 CVE-2026-53192 基础信息
漏洞信息
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Vulnerability Title
ALSA: timer: Fix UAF at snd_timer_user_params()
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: timer: Fix UAF at snd_timer_user_params() At releasing a timer object, e.g. when a userspace timer (CONFIG_SND_UTIMER) gets closed and snd_timer_free() is called, it tries to detach the timer instances and release the resources. However, it's still possible that other in-flight tasks are holding the timer instance where the to-be-deleted timer object is associated, and this may lead to racy accesses. Fortunately, most of ioctls dealing with the timer instance list already have the protection with register_mutex, and this also avoids such races. But, SNDRV_TIMER_IOCTL_PARAMS isn't protected, hence the concurrent ioctl may lead to use-after-free. This patch just adds the guard with register_mutex to protect snd_timer_user_params() for covering the code path as a quick workaround. It's no hot-path but rather a rarely issued ioctl, so the performance penalty doesn't matter.
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-2026-53192 的公开POC
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CVE-2026-53192 补丁与修复 (5)
CVE-2026-53192 其他参考 (3)
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-2026-53197 | Linux iptfs ABBA死锁漏洞 |
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IV. Related Vulnerabilities
V. Comments for CVE-2026-53192
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