7.8

CVE-2025-37796: linux Use After Free

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2025-37796DEBIAN-CVE-2025-37796
Published 01-05-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-37796 is a high (CVSS 7.8) Use After Free vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.3% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.20%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 43 · Related 41
DLA-4178-1DLA-4193-1SUSE-SU-2025:01964-1SUSE-SU-2025:01965-1SUSE-SU-2025:01983-1SUSE-SU-2025:02000-1

Timeline

  1. 01-05-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: at76c50x: fix use after free access in at76_disconnect The memory pointed to by priv is freed at the end of at76_delete_device function (using ieee80211_free_hw). But the code then accesses the udev field of the freed object to put the USB device. This may also lead to a memory leak of the usb device. Fix this by using udev from interface.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

+0.01 pp

From 0.19% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.20%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu138 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)
Linux2 products
  • linux≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < c731cdfddcf1be1590d5ba8c9b508f98e3a2b3d6 | ≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < 6e4ab3e574c2a335b40fa1f70d1c54fcb58ab33f | ≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < 3c619aec1f538333b56746d2f796aab1bca5c9a5 | ≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < 5e7df74745700f059dc117a620e566964a2e8f2c | ≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < 7ca513631fa6ad3011b8b9197cdde0f351103704 | ≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < a9682bfef2cf3802515a902e964d774e137be1b9 | ≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < 152721cbae42713ecfbca6847e0f102ee6b19546 | ≥ 29e20aa6c6aff35c81d4da2e2cd516dadb569061, < 27c7e63b3cb1a20bb78ed4a36c561ea4579fd7da | 3.17
  • linux_kernel≥ 3.17.1, < 5.4.293 | ≥ 5.5, < 5.10.237 | ≥ 5.11, < 5.15.181 | ≥ 5.16, < 6.1.135 | ≥ 6.2, < 6.6.88 | ≥ 6.7, < 6.12.25 | ≥ 6.13, < 6.14.4 | 3.17 | 3.17:rc5 | 3.17:rc6 | 3.17:rc7 | 6.15:rc1 | 6.15:rc2
Debian1 product
  • linux< 6.1.135-1 | < 6.12.25-1

3 vendors · 141 products

References

44 links
Show all 44 references