drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling (Linux Linux)

CVE-2025-38467
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 9 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling If there's support for another console device (such as a TTY serial), the kernel occasionally panics during boot. The panic message and a relevant snippet of the call stack is as follows: Unable to handle kernel NULL pointer dereference at virtual address 000000000000000 Call trace: drm_crtc_handle_vblank+0x10/0x30 (P) decon_irq_handler+0x88/0xb4 [...] Otherwise, the panics don't happen. This indicates that it's some sort of race condition. Add a check to validate if the drm device can handle vblanks before calling drm_crtc_handle_vblank() to avoid this.

Weaknesses (CWE)

  • CWE-476 — NULL Pointer Dereference

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 96976c3d9aff4e1387c30f6356ac01fa6f72ef46 < b4e72c0bf878f02faa00a7dc7c9ffc4ff7c116a7 ; affected 96976c3d9aff4e1387c30f6356ac01fa6f72ef46 < a2130463fc9451005660b0eda7b61d5f746f7d74 ; affected 96976c3d9aff4e1387c30f6356ac01fa6f72ef46 < 87825fbd1e176cd5b896940f3959e7c9a916945d ; affected 96976c3d9aff4e1387c30f6356ac01fa6f72ef46 < a40a35166f7e4f6dcd4b087d620c8228922dcb0a ; affected 96976c3d9aff4e1387c30f6356ac01fa6f72ef46 < 391e5ea5b877230b844c9bd8bbcd91b681b1ce2d ; affected 96976c3d9aff4e1387c30f6356ac01fa6f72ef46 < e9d9b25f376737b81f06de9c5aa422b488f47184
Linux · Linuxaffected 4.0 ; unaffected 0 < 4.0 ; unaffected 5.4.296 ≤ 5.4.* ; unaffected 5.10.240 ≤ 5.10.* ; unaffected 5.15.189 ≤ 5.15.* ; unaffected 6.1.146 ≤ 6.1.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD