CVE-2025-21898
ftrace: Avoid potential division by zero in function_stat_show()
Severity Score
9.8
*CVSS v3
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
In the Linux kernel, the following vulnerability has been resolved: ftrace: Avoid potential division by zero in function_stat_show() Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64}
produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because
rec->time * rec->time overflow will likely happen earlier.
In the Linux kernel, the following vulnerability has been resolved: ftrace: Avoid potential division by zero in function_stat_show() Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier.
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2024-12-29 CVE Reserved
- 2025-04-01 CVE Published
- 2025-05-03 EPSS Updated
- 2025-05-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
CAPEC
References (15)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/f0629ee3922f10112584b1898491fecc74d98b3b | Vuln. Introduced | |
| https://git.kernel.org/stable/c/e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d | Vuln. Introduced | |
| https://git.kernel.org/stable/c/c59e74104cfd7df3ca0b5f59f1baee9c8c28b9ef | Vuln. Introduced | |
| https://git.kernel.org/stable/c/015f0fd0fcc338513f80044add27fa46cf71d217 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/1a2985af2a20b816a5cc41a2ddc1c4109ef6b9c6 | Vuln. Introduced | |
| https://git.kernel.org/stable/c/7650b4b1df091815bbbbb837d308dd4154684f8a | Vuln. Introduced | |
| https://git.kernel.org/stable/c/010a7e846d4beaf34384c40ff18d5de10106d9b4 | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.4.9 < 5.4.291 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.4.9 < 5.4.291" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.10.235 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.235" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 5.15.179 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.15.179" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.1.130 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.1.130" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.6.81 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.6.81" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.12.18 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.12.18" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.13.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.13.6" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 5.5 < 6.14 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 6.14" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 3.16.83 Search vendor "Linux" for product "Linux Kernel" and version "3.16.83" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.4.209 Search vendor "Linux" for product "Linux Kernel" and version "4.4.209" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.9.209 Search vendor "Linux" for product "Linux Kernel" and version "4.9.209" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.14.163 Search vendor "Linux" for product "Linux Kernel" and version "4.14.163" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | 4.19.94 Search vendor "Linux" for product "Linux Kernel" and version "4.19.94" | en |
Affected
| ||||||