CVE-2025-40322
Last modified
CVE-2025-40322 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bit_putcs* bit_putcs_aligned()/unaligned() derived the glyph pointer from the character value masked by 0xff/0x1ff, which may exceed the actual font's glyph count and read past the end of the built-in font array. Clamp the index to the actual glyph count before computing the address. This fixes a global out-of-bounds read reported by syzbot.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bit_putcs* bit_putcs_aligned()/unaligned() derived the glyph pointer from the character value masked by 0xff/0x1ff, which may exceed the actual font's glyph count and read past the end of the built-in font array. Clamp the index to the actual glyph count before computing the address. This fixes a global out-of-bounds read reported by syzbot.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a10cede006f9614b465cf25609a8753efbfd45cc; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 0998a6cb232674408a03e8561dc15aa266b2f53b; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < db5c9a162d2f42bcc842b76b3d935dcc050a0eec; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c12003bf91fdff381c55ef54fef3e961a5af2545; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 9ba1a7802ca9a2590cef95b253e6526f4364477f; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 901f44227072be60812fe8083e83e1533c04eed1; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < efaf89a75a29b2d179bf4fe63ca62852e93ad620; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 18c4ef4e765a798b47980555ed665d78b71aeadf |
| Linux | Linux | 2.6.12 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2025-40322?
How severe is CVE-2025-40322?
How do I fix CVE-2025-40322?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2025
- CVE-2025-40317In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2025-40318In the Linux kernel, the following vulnerability has been re…8.8
- CVE-2025-40319In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2025-4032A vulnerability was found in inclusionAI AWorld up to 8c2576…8.1
- CVE-2025-40320In the Linux kernel, the following vulnerability has been re…9.8
- CVE-2025-40321In the Linux kernel, the following vulnerability has been re…
- CVE-2025-40323In the Linux kernel, the following vulnerability has been re…7.8
- CVE-2025-40324In the Linux kernel, the following vulnerability has been re…7.5
- CVE-2025-40325In the Linux kernel, the following vulnerability has been re…5.5
- CVE-2025-40326In the Linux kernel, the following vulnerability has been re…7.5
- CVE-2025-40327In the Linux kernel, the following vulnerability has been re…
- CVE-2025-40328In the Linux kernel, the following vulnerability has been re…8.8
Are you affected by CVE-2025-40322?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST