01 Record

CVE-2025-40304

fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

fbdev: Add bounds checking in bit_putcs to fix vmalloc-out-of-bounds

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.14% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 3.9% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Deferred. NVD last modified this record on 2026-07-30.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-12-08 00:46Z9 MO AGO

Last updated

2026-08-05 12:09Z1 MO AGO

Reserved

2025-04-16

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

9a179e5c7a9bc21c8aa816f7ca8b0e4cf4ad11d29d984f30078a8048c8460279

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 996bfaa7372d6718b6d860bdf78f6618e850c702, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < f0982400648a3e00580253e0c48e991f34d2684c, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 1943b69e87b0ab35032d47de0a7fca9a3d1d6fc1, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < ebc0730b490c7f27340b1222e01dd106e820320d, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 86df8ade88d290725554cefd03101ecd0fbd3752, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 15ba9acafb0517f8359ca30002c189a68ddbb939, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2d1359e11674ed4274934eac8a71877ae5ae7bbb, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3637d34b35b287ab830e66048841ace404382b67, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/996bfaa7372d6718b6d860bdf78f6618e850c702
git.kernel.orghttps://git.kernel.org/stable/c/f0982400648a3e00580253e0c48e991f34d2684c
git.kernel.orghttps://git.kernel.org/stable/c/1943b69e87b0ab35032d47de0a7fca9a3d1d6fc1
git.kernel.orghttps://git.kernel.org/stable/c/ebc0730b490c7f27340b1222e01dd106e820320d
git.kernel.orghttps://git.kernel.org/stable/c/86df8ade88d290725554cefd03101ecd0fbd3752
git.kernel.orghttps://git.kernel.org/stable/c/15ba9acafb0517f8359ca30002c189a68ddbb939
git.kernel.orghttps://git.kernel.org/stable/c/2d1359e11674ed4274934eac8a71877ae5ae7bbb
git.kernel.orghttps://git.kernel.org/stable/c/3637d34b35b287ab830e66048841ace404382b67

01 Record index

CVE-2025-40304

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-40304

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References