CVE-2025-38448— usb: gadget: u_serial: Fix race condition in TTY wakeup
Affected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 35f95fd7f234d2b58803bab6f6ebd6bb988050a2< 18d58a467ccf011078352d91b4d6a0108c7318e8 | affected |
35f95fd7f234d2b58803bab6f6ebd6bb988050a2< d43657b59f36e88289a6066f15bc9a80df5014eb | affected | ||
35f95fd7f234d2b58803bab6f6ebd6bb988050a2< a5012673d49788f16bb4e375b002d7743eb642d9 | affected | ||
35f95fd7f234d2b58803bab6f6ebd6bb988050a2< ee8d688e2ba558f3bb8ac225113740be5f335417 | affected | ||
35f95fd7f234d2b58803bab6f6ebd6bb988050a2< c6eb4a05af3d0ba3bc4e8159287722fb9abc6359 | affected | ||
35f95fd7f234d2b58803bab6f6ebd6bb988050a2< abf3620cba68e0e51e5c21054ce4f925f75b3661 | affected | ||
35f95fd7f234d2b58803bab6f6ebd6bb988050a2< c8c80a3a35c2e3488409de2d5376ef7e662a2bf5 | affected | ||
35f95fd7f234d2b58803bab6f6ebd6bb988050a2< c529c3730bd09115684644e26bf01ecbd7e2c2c9 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2025-38448
Vulnerability Information
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Vulnerability Title
usb: gadget: u_serial: Fix race condition in TTY wakeup
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: u_serial: Fix race condition in TTY wakeup A race condition occurs when gs_start_io() calls either gs_start_rx() or gs_start_tx(), as those functions briefly drop the port_lock for usb_ep_queue(). This allows gs_close() and gserial_disconnect() to clear port.tty and port_usb, respectively. Use the null-safe TTY Port helper function to wake up TTY. Example CPU1: CPU2: gserial_connect() // lock gs_close() // await lock gs_start_rx() // unlock usb_ep_queue() gs_close() // lock, reset port.tty and unlock gs_start_rx() // lock tty_wakeup() // NPE
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于TTY唤醒路径中的竞争条件问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-38448
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-07-25 · 114 CVEs total
| CVE-2025-38424 | perf: Fix sample vs do_exit() | |
| CVE-2025-38438 | ASoC: SOF: Intel: hda: Use devm_kstrdup() to avoid memleak. | |
| CVE-2025-38437 | ksmbd: fix potential use-after-free in oplock/lease break ack | |
| CVE-2025-38436 | drm/scheduler: signal scheduled fence when kill job | |
| CVE-2025-38435 | riscv: vector: Fix context save/restore with xtheadvector | |
| CVE-2025-38434 | Revert "riscv: Define TASK_SIZE_MAX for __access_ok()" | |
| CVE-2025-38433 | riscv: fix runtime constant support for nommu kernels | |
| CVE-2025-38432 | net: netpoll: Initialize UDP checksum field before checksumming | |
| CVE-2025-38431 | smb: client: fix regression with native SMB symlinks | |
| CVE-2025-38430 | nfsd: nfsd4_spo_must_allow() must check this is a v4 compound request | |
| CVE-2025-38429 | bus: mhi: ep: Update read pointer only after buffer is written | |
| CVE-2025-38428 | Input: ims-pcu - check record size in ims_pcu_flash_firmware() | |
| CVE-2025-38427 | video: screen_info: Relocate framebuffers behind PCI bridges | |
| CVE-2025-38425 | i2c: tegra: check msg length in SMBUS block read | |
| CVE-2025-38426 | drm/amdgpu: Add basic validation for RAS header | |
| CVE-2025-38413 | virtio-net: xsk: rx: fix the frame's length check | |
| CVE-2025-38416 | NFC: nci: uart: Set tty->disc_data only in success path | |
| CVE-2025-38415 | Squashfs: check return result of sb_min_blocksize | |
| CVE-2025-38414 | wifi: ath12k: fix GCC_GCC_PCIE_HOT_RST definition for WCN7850 | |
| CVE-2025-38417 | ice: fix eswitch code memory leak in reset scenario |
Showing top 20 of 114 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects - CVE-2026-43499
rtmutex: Use waiter::task instead of current in remove_waite - CVE-2026-43497
fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-aft
Same vendor: Linux
- CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects - CVE-2026-43499
rtmutex: Use waiter::task instead of current in remove_waite - CVE-2026-43497
fbdev: udlfb: add vm_ops to dlfb_ops_mmap to prevent use-aft
V. Comments for CVE-2025-38448
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