XLibre/xserver
1
1
Fork 0
mirror of https://github.com/X11Libre/xserver.git synced 2026-04-14 17:18:09 +00:00
Code Issues Packages Projects Releases Wiki Activity

xf86: check return value of XF86_CRTC_CONFIG_PTR in xf86CompatOutput()

Browse Source 
If privates[xf86CrtcConfigPrivateIndex].ptr is NULL, this will cause
a segfault.

Possible fix for !1241

Signed-off-by: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/835>
This commit is contained in:
Benjamin Valentin
2021-12-27 14:53:22 +01:00
committed by Enrico Weigelt, metux IT consult
parent f5dd326d3f
commit b2c93ff45f
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
hw/xfree86/modes/xf86Crtc.h
View File

@@ -842,7 +842,7 @@ xf86CompatOutput(ScrnInfoPtr pScrn)
if (xf86CrtcConfigPrivateIndex == -1)
return NULL;
config = XF86_CRTC_CONFIG_PTR(pScrn);
if (config->compat_output < 0)
if ((config == NULL) || (config->compat_output < 0))
return NULL;
return config->output[config->compat_output];
}