CVE-2025-37817: debian debian_linux Double Free
Vulnerability summary
CVE-2025-37817 is a high (CVSS 7.8) Double Free vulnerability in debian debian_linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.3% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 33 · Related 29Timeline
- 08-05-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: mcb: fix a double free bug in chameleon_parse_gdd() In chameleon_parse_gdd(), if mcb_device_register() fails, 'mdev' would be released in mcb_device_register() via put_device(). Thus, goto 'err' label and free 'mdev' again causes a double free. Just return if mcb_device_register() fails.
CVSS metrics
3 scores · 3 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
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
11%
Versus all other CVEs
30-day change
+0.01 pp
From 0.21% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu140 products
- linuxAll versions (No fix recorded) | < 5.15.0-144.157 | < 6.8.0-100.100
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1088.95 | < 6.8.0-1046.49
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Debian2 products
- linux< 6.1.137-1 | < 6.12.27-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < d70184958b0ea8c0fd52e2b456654b503e769fc8 | ≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < 4ffe8c9fb561e4427dd1a3056cd5b3685b74f78d | ≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < 59f993cd36b6e28a394ba3d977e8ffe5c9884e3b | ≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < c5b8a549ef1fcc6066b037a3962c79d60465ba0b | ≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < 96838eb1836fd372e42be5db84f0b333b65146a6 | ≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < df1a5d5c6134224f9298e5189230f9d29ae50cac | ≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < bcc7d58ee5173e34306026bd01e1fbf75e169d37 | ≥ 3764e82e5150d87b205c10cd78a9c9ab86fbfa51, < 7c7f1bfdb2249f854a736d9b79778c7e5a29a150 | 3.15
- linux_kernel≥ 3.15, < 5.4.293 | ≥ 5.5, < 5.10.237 | ≥ 5.11, < 5.15.181 | ≥ 5.16, < 6.1.136 | ≥ 6.2, < 6.6.89 | ≥ 6.7, < 6.12.26 | ≥ 6.13, < 6.14.5 | 6.15:rc1 | 6.15:rc2 | 6.15:rc3
3 vendors · 144 products