CVE-2025-38555: usb: gadget : fix use-after-free in composite_dev_cleanup()
Vulnerability summary
CVE-2025-38555 is a high (CVSS 7.8) Use After Free vulnerability in debian debian_linux. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 8.2% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 116 · Related 112Showing 100 of 116.
Timeline
- 19-08-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: usb: gadget : fix use-after-free in composite_dev_cleanup() 1. In func configfs_composite_bind() -> composite_os_desc_req_prepare(): if kmalloc fails, the pointer cdev->os_desc_req will be freed but not set to NULL. Then it will return a failure to the upper-level function. 2. in func configfs_composite_bind() -> composite_dev_cleanup(): it will checks whether cdev->os_desc_req is NULL. If it is not NULL, it will attempt to use it.This will lead to a use-after-free issue. BUG: KASAN: use-after-free in composite_dev_cleanup+0xf4/0x2c0 Read of size 8 at addr 0000004827837a00 by task init/1 CPU: 10 PID: 1 Comm: init Tainted: G O 5.10.97-oh #1 kasan_report+0x188/0x1cc __asan_load8+0xb4/0xbc composite_dev_cleanup+0xf4/0x2c0 configfs_composite_bind+0x210/0x7ac udc_bind_to_driver+0xb4/0x1ec usb_gadget_probe_driver+0xec/0x21c gadget_dev_desc_UDC_store+0x264/0x27c
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.18%
Chance of exploitation in the next 30 days
Percentile
8%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.18% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu147 products
- linuxAll versions (No fix recorded) | < 5.15.0-163.173 | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1097.104 | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.148-1 | < 6.12.43-1 | < 6.16.3-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < dba96dfa5a0f685b959dd28a52ac8dab0b805204 | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < 2db29235e900a084a656dea7e0939b0abb7bb897 | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < 8afb22aa063f706f3343707cdfb8cda4d021dd33 | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < e624bf26127645a2f7821e73fdf6dc64bad07835 | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < aada327a9f8028c573636fa60c0abc80fb8135c9 | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < 5f06ee9f9a3665d43133f125c17e5258a13f3963 | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < bd3c4ef60baf7f65c963f3e12d9d7b2b091e20ba | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < e1be1f380c82a69f80c68c96a7cfe8759fb30355 | ≥ 37a3a533429ef9b3cc9f15a656c19623f0e88df7, < 151c0aa896c47a4459e07fee7d4843f44c1bb18e | 3.16
- linux_kernel≥ 3.16, < 5.4.297 | ≥ 5.5, < 5.10.241 | ≥ 5.11, < 5.15.190 | ≥ 5.16, < 6.1.148 | ≥ 6.2, < 6.6.102 | ≥ 6.7, < 6.12.42 | ≥ 6.13, < 6.15.10 | ≥ 6.16, < 6.16.1
3 vendors · 151 products
