5.5

CVE-2025-37787: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2025-37787DEBIAN-CVE-2025-37787
Published 01-05-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-37787 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.19%
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 41 · Related 40
DLA-4193-1SUSE-SU-2025:01919-1SUSE-SU-2025:01951-1SUSE-SU-2025:01964-1SUSE-SU-2025:01965-1SUSE-SU-2025:01967-1

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: net: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered Russell King reports that a system with mv88e6xxx dereferences a NULL pointer when unbinding this driver: https://lore.kernel.org/netdev/Z_lRkMlTJ1KQ0kVX@shell.armlinux.org.uk/ The crash seems to be in devlink_region_destroy(), which is not NULL tolerant but is given a NULL devlink global region pointer. At least on some chips, some devlink regions are conditionally registered since the blamed commit, see mv88e6xxx_setup_devlink_regions_global(): if (cond && !cond(chip)) continue; These are MV88E6XXX_REGION_STU and MV88E6XXX_REGION_PVT. If the chip does not have an STU or PVT, it should crash like this. To fix the issue, avoid unregistering those regions which are NULL, i.e. were skipped at mv88e6xxx_setup_devlink_regions_global() time.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

+0.01 pp

From 0.18% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.19%

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

Ubuntu126 products
  • linux< 5.15.0-144.157 | < 6.8.0-100.100
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 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≥ 836021a2d0e0e4c90b895a35bd9c0342071855fb, < 8ccdf5e24b276848eefb2755e05ff0f005a0c4a1 | ≥ 836021a2d0e0e4c90b895a35bd9c0342071855fb, < b3c70dfe51f10df60db2646c08cebd24bcdc5247 | ≥ 836021a2d0e0e4c90b895a35bd9c0342071855fb, < bbb80f004f7a90c3dcaacc982c59967457254a05 | ≥ 836021a2d0e0e4c90b895a35bd9c0342071855fb, < 3665695e3572239dc233216f06b41f40cc771889 | ≥ 836021a2d0e0e4c90b895a35bd9c0342071855fb, < 5f5e95945bb1e08be7655da6acba648274db457d | ≥ 836021a2d0e0e4c90b895a35bd9c0342071855fb, < c84f6ce918a9e6f4996597cbc62536bbf2247c96 | 5.13
  • linux_kernel≥ 5.13, < 5.15.181 | ≥ 5.16, < 6.1.135 | ≥ 6.2, < 6.6.88 | ≥ 6.7, < 6.12.25 | ≥ 6.13, < 6.14.4 | 6.15:rc1 | 6.15:rc2
Debian1 product
  • linux< 6.1.135-1 | < 6.12.25-1

3 vendors · 129 products

References

41 links
Show all 41 references