CVE-2025-21455 | Time-of-check Time-of-use (TOCTOU) Race Condition in Camera_Linux

Memory corruption while submitting blob data to kernel space though IOCTL.

Published: 2025-08-06 Last update: 2025-08-20 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-21455 is rated Low Risk (37.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2025-21455

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-02 0.01% 0.05% +0.04%
2 2025-08-06 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-21455

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2025-21455

Affected software / configurations for CVE-2025-21455

Vendor Product Version Raw CPE
qualcomm fastconnect_6800_firmware — cpe:2.3:o:qualcomm:fastconnect_6800_firmware:-:*:*:*:*:*:*:*
qualcomm fastconnect_6900_firmware — cpe:2.3:o:qualcomm:fastconnect_6900_firmware:-:*:*:*:*:*:*:*
qualcomm fastconnect_7800_firmware — cpe:2.3:o:qualcomm:fastconnect_7800_firmware:-:*:*:*:*:*:*:*
qualcomm qca6391_firmware — cpe:2.3:o:qualcomm:qca6391_firmware:-:*:*:*:*:*:*:*
qualcomm qca6426_firmware — cpe:2.3:o:qualcomm:qca6426_firmware:-:*:*:*:*:*:*:*
qualcomm qca6436_firmware — cpe:2.3:o:qualcomm:qca6436_firmware:-:*:*:*:*:*:*:*
qualcomm qsm8250_firmware — cpe:2.3:o:qualcomm:qsm8250_firmware:-:*:*:*:*:*:*:*
qualcomm sd865_5g_firmware — cpe:2.3:o:qualcomm:sd865_5g_firmware:-:*:*:*:*:*:*:*
qualcomm sdx55_firmware — cpe:2.3:o:qualcomm:sdx55_firmware:-:*:*:*:*:*:*:*
qualcomm snapdragon_8_gen_1_mobile_platform_firmware — cpe:2.3:o:qualcomm:snapdragon_8_gen_1_mobile_platform_firmware:-:*:*:*:*:*:*:*
qualcomm snapdragon_865_5g_mobile_platform_firmware — cpe:2.3:o:qualcomm:snapdragon_865_5g_mobile_platform_firmware:-:*:*:*:*:*:*:*
qualcomm snapdragon_865\+_5g_mobile_platform_\(sm8250-ab\)_firmware — cpe:2.3:o:qualcomm:snapdragon_865\+_5g_mobile_platform_\(sm8250-ab\)_firmware:-:*:*:*:*:*:*:*
qualcomm snapdragon_870_5g_mobile_platform_\(sm8250-ac\)_firmware — cpe:2.3:o:qualcomm:snapdragon_870_5g_mobile_platform_\(sm8250-ac\)_firmware:-:*:*:*:*:*:*:*
qualcomm snapdragon_x55_5g_modem-rf_system_firmware — cpe:2.3:o:qualcomm:snapdragon_x55_5g_modem-rf_system_firmware:-:*:*:*:*:*:*:*
qualcomm snapdragon_xr2_5g_platform_firmware — cpe:2.3:o:qualcomm:snapdragon_xr2_5g_platform_firmware:-:*:*:*:*:*:*:*
qualcomm sw5100_firmware — cpe:2.3:o:qualcomm:sw5100_firmware:-:*:*:*:*:*:*:*
qualcomm sw5100p_firmware — cpe:2.3:o:qualcomm:sw5100p_firmware:-:*:*:*:*:*:*:*
qualcomm sxr2130_firmware — cpe:2.3:o:qualcomm:sxr2130_firmware:-:*:*:*:*:*:*:*
qualcomm sxr2230p_firmware — cpe:2.3:o:qualcomm:sxr2230p_firmware:-:*:*:*:*:*:*:*
qualcomm sxr2250p_firmware — cpe:2.3:o:qualcomm:sxr2250p_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9380_firmware — cpe:2.3:o:qualcomm:wcd9380_firmware:-:*:*:*:*:*:*:*
qualcomm wcd9385_firmware — cpe:2.3:o:qualcomm:wcd9385_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3980_firmware — cpe:2.3:o:qualcomm:wcn3980_firmware:-:*:*:*:*:*:*:*
qualcomm wcn3988_firmware — cpe:2.3:o:qualcomm:wcn3988_firmware:-:*:*:*:*:*:*:*
qualcomm wsa8810_firmware — cpe:2.3:o:qualcomm:wsa8810_firmware:-:*:*:*:*:*:*:*
qualcomm wsa8815_firmware — cpe:2.3:o:qualcomm:wsa8815_firmware:-:*:*:*:*:*:*:*
qualcomm wsa8830_firmware — cpe:2.3:o:qualcomm:wsa8830_firmware:-:*:*:*:*:*:*:*
qualcomm wsa8832_firmware — cpe:2.3:o:qualcomm:wsa8832_firmware:-:*:*:*:*:*:*:*
qualcomm wsa8835_firmware — cpe:2.3:o:qualcomm:wsa8835_firmware:-:*:*:*:*:*:*:*

References for CVE-2025-21455

cvelogic Threat Intelligence