CVE-2025-37990: debian debian_linux Use of Uninitialized Resource
Vulnerability summary
CVE-2025-37990 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in debian debian_linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 13.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 48 · Related 43Timeline
- 20-05-2025PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: brcm80211: fmac: Add error handling for brcmf_usb_dl_writeimage() The function brcmf_usb_dl_writeimage() calls the function brcmf_usb_dl_cmd() but dose not check its return value. The 'state.state' and the 'state.bytes' are uninitialized if the function brcmf_usb_dl_cmd() fails. It is dangerous to use uninitialized variables in the conditions. Add error handling for brcmf_usb_dl_cmd() to jump to error handling path if the brcmf_usb_dl_cmd() fails and the 'state.state' and the 'state.bytes' are uninitialized. Improve the error message to report more detailed error information.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.24%
Chance of exploitation in the next 30 days
Percentile
14%
Versus all other CVEs
30-day change
+0.03 pp
From 0.20% 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
Ubuntu144 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< 6.1.140-1 | < 6.12.29-1
- debian_linuxEOL11.0
Linux2 products
- linux≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < 972bf75e53f778c78039c5d139dd47443a6d66a1 | ≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < 62a4f2955d9a1745bdb410bf83fb16666d8865d6 | ≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < 508be7c001437bacad7b9a43f08a723887bcd1ea | ≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < 524b70441baba453b193c418e3142bd31059cc1f | ≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < 08424a0922fb9e32a19b09d852ee87fb6c497538 | ≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < bdb435ef9815b1ae28eefffa01c6959d0fcf1fa7 | ≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < fa9b9f02212574ee1867fbefb0a675362a71b31d | ≥ 71bb244ba2fd5390eefe4ee9054abdb3f8b05922, < 8e089e7b585d95122c8122d732d1d5ef8f879396 | 3.4
- linux_kernel≥ 3.4, < 5.4.294 | ≥ 5.5, < 5.10.238 | ≥ 5.11, < 5.15.182 | ≥ 5.16, < 6.1.138 | ≥ 6.2, < 6.6.90 | ≥ 6.7, < 6.12.28 | ≥ 6.13, < 6.14.6 | 6.15:rc1 | 6.15:rc2 | 6.15:rc3 | 6.15:rc4
3 vendors · 148 products
References
47 links- lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlThird Party Advisory