5.5

CVE-2025-38467

drm/exynos: exynos7_drm_decon: add vblank check in IRQ handling

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.0 < 5.4.296
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.240
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.189
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.146
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.99
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.39
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.7
Linux ≫ Linux Kernel Version6.16 Updaterc1
Linux ≫ Linux Kernel Version6.16 Updaterc2
Linux ≫ Linux Kernel Version6.16 Updaterc3
Linux ≫ Linux Kernel Version6.16 Updaterc4
Debian ≫ Debian Linux Version11.0
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.16% 0.056
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/391e5ea5b877230b844c9bd8bbcd91b681b1ce2d
Patch
https://git.kernel.org/stable/c/87825fbd1e176cd5b896940f3959e7c9a916945d
Patch
https://git.kernel.org/stable/c/996740652e620ef8ee1e5c65832cf2ffa498577d
Patch
https://git.kernel.org/stable/c/a2130463fc9451005660b0eda7b61d5f746f7d74
Patch
https://git.kernel.org/stable/c/a40a35166f7e4f6dcd4b087d620c8228922dcb0a
Patch
https://git.kernel.org/stable/c/b4e72c0bf878f02faa00a7dc7c9ffc4ff7c116a7
Patch
https://git.kernel.org/stable/c/b846350aa272de99bf6fecfa6b08e64ebfb13173
Patch
https://git.kernel.org/stable/c/e9d9b25f376737b81f06de9c5aa422b488f47184
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Third Party Advisory