Buffer overflow in Linux
CVE-2025-37803
In the Linux kernel, the following vulnerability has been resolved: udmabuf: fix a buf size overflow issue during udmabuf creation by casting size_limit_mb to u64 when calculate pglimit.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (8.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions fbb0de795078190a9834b3409e4b009cfb18a6d4, 4.20, 0
- Linux Linux_kernel — versions 6.15
Weakness classification (CWE)
Public proof-of-concept exploits
References
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-37803?
- CVE-2025-37803 is a high-severity vulnerability in Linux, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 7.8/10. Published 2025-05-08.
- How severe is CVE-2025-37803?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2025-37803 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.