CVE-2026-43182

Description

In the Linux kernel, the following vulnerability has been resolved: media: ccs: Avoid possible division by zero Calculating maximum M for scaler configuration involves dividing by MIN_X_OUTPUT_SIZE limit register's value. Albeit the value is presumably non-zero, the driver was missing the check it in fact was. Fix this.

CVSS Details

CVSS Score

5.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Configurations (Affected Products)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* - VULNERABLE

Linux Kernel (包含未修复CCS驱动的版本)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

/*
 * PoC Concept for CVE-2026-43182
 * Demonstrating the missing check for division by zero in CCS driver.
 * This is a simulation of the vulnerable logic.
 */

#include <stdio.h>

// Simulating the vulnerable register value
#define MIN_X_OUTPUT_SIZE_REG 0

void vulnerable_scaler_calculation(unsigned int reg_value) {
    printf("Calculating scaler configuration...\n");
    
    // Vulnerability: No check if reg_value is 0 before division
    // This line causes the crash in the kernel context
    unsigned int max_m = 1000000 / reg_value;
    
    printf("Max M calculated: %u\n", max_m);
}

int main() {
    printf("Triggering PoC for CVE-2026-43182...\n");
    
    // Simulating the scenario where the register value is 0
    if (MIN_X_OUTPUT_SIZE_REG == 0) {
        printf("Error condition: Register value is zero.\n");
    }
    
    vulnerable_scaler_calculation(MIN_X_OUTPUT_SIZE_REG);
    
    return 0;
}

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-43182
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-43182
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-43182/
[4] VulDB https://vuldb.com/cve/CVE-2026-43182
[5] https://git.kernel.org/stable/c/32a21ed2ad743fe2d12af48e627089b921a032c2
[6] https://git.kernel.org/stable/c/679f0b7b6a409750a25754c8833e268e5fdde742
[7] https://git.kernel.org/stable/c/8ca7df18e7a58a0e5b0ed9eaaa34e16fc5cb9680
[8] https://git.kernel.org/stable/c/9aae0f31d37a8facd25e37c0f0709ea08de83802
[9] https://git.kernel.org/stable/c/a8ff58cc8c7514c278ba0ea2c787d4bf9eeb355d
[10] https://git.kernel.org/stable/c/b6e0529c300e44153fc6f3b565e28163caf1f031
[11] https://git.kernel.org/stable/c/c9af1818387f5c6f543e2e02c40b3038eae86be8

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-43182", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "published": "2026-05-06T12:16:36.787", "lastModified": "2026-05-11T20:53:18.160", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: ccs: Avoid possible division by zero\n\nCalculating maximum M for scaler configuration involves dividing by\nMIN_X_OUTPUT_SIZE limit register's value. Albeit the value is presumably\nnon-zero, the driver was missing the check it in fact was. Fix this."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-369"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.5", "versionEndExcluding": "5.15.202", "matchCriteriaId": "1B3CF65E-D072-49FD-A99C-0159B48E8075"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.16", "versionEndExcluding": "6.1.165", "matchCriteriaId": "797C7F46-D0BE-4FB8-A502-C5EF8E6B6654"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2", "versionEndExcluding": "6.6.128", "matchCriteriaId": "851E9353-6C09-4CC9-877E-E09DB164A3C2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.75", "matchCriteriaId": "BCE16369-98ED-41CF-8995-DFDC10B288D2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.18.16", "matchCriteriaId": "B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.19", "versionEndExcluding": "6.19.6", "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/32a21ed2ad743fe2d12af48e627089b921a032c2", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/679f0b7b6a409750a25754c8833e268e5fdde742", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/8ca7df18e7a58a0e5b0ed9eaaa34e16fc5cb9680", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/9aae0f31d37a8facd25e37c0f0709ea08de83802", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/a8ff58cc8c7514c278ba0ea2c787d4bf9eeb355d", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/b6e0529c300e44153fc6f3b565e28163caf1f031", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}, {"url": "https://git.kernel.org/stable/c/c9af1818387f5c6f543e2e02c40b3038eae86be8", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"]}]}}