Mirrored_Repos/LookingGlass
1
0
Fork 0
mirror of https://github.com/gnif/LookingGlass.git synced 2024-09-19 00:41:33 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[module] check vmf->pgoff before using it
Some checks failed
build / client (Debug, map[cc:clang cxx:clang++], libdecor) (push) Has been cancelled
Details
build / client (Debug, map[cc:clang cxx:clang++], xdg-shell) (push) Has been cancelled
Details
build / client (Debug, map[cc:gcc cxx:g++], libdecor) (push) Has been cancelled
Details
build / client (Debug, map[cc:gcc cxx:g++], xdg-shell) (push) Has been cancelled
Details
build / client (Release, map[cc:clang cxx:clang++], libdecor) (push) Has been cancelled
Details
build / client (Release, map[cc:clang cxx:clang++], xdg-shell) (push) Has been cancelled
Details
build / client (Release, map[cc:gcc cxx:g++], libdecor) (push) Has been cancelled
Details
build / client (Release, map[cc:gcc cxx:g++], xdg-shell) (push) Has been cancelled
Details
build / module (push) Has been cancelled
Details
build / host-linux (push) Has been cancelled
Details
build / host-windows-cross (push) Has been cancelled
Details
build / host-windows-native (push) Has been cancelled
Details
build / obs (clang) (push) Has been cancelled
Details
build / obs (gcc) (push) Has been cancelled
Details
build / docs (push) Has been cancelled
Details

Browse Source 
As reported by @Crispy-fried-chicken in issue #1133 there is a potential
XXE vulnerability here. This fixes this problem by verifying the value
of `vmf->pgff` does not exceed the bounds of the memory mapping.

Fixes: #1133
This commit is contained in:
Geoffrey McRae 2024-08-26 14:37:21 +10:00
parent d060e375ea
commit 3ea37b86e3
2 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
module/dkms.conf
View File

@ -1,5 +1,5 @@
PACKAGE_NAME="kvmfr"
PACKAGE_VERSION="0.0.10"
PACKAGE_VERSION="0.0.11"
BUILT_MODULE_NAME[0]="${PACKAGE_NAME}"
MAKE[0]="make KDIR=${kernel_source_dir}"
CLEAN="make KDIR=${kernel_source_dir} clean"

6
module/kvmfr.c
View File

@ -88,8 +88,12 @@ static vm_fault_t kvmfr_vm_fault(struct vm_fault *vmf)
{
struct vm_area_struct *vma = vmf->vma;
struct kvmfrbuf *kbuf = (struct kvmfrbuf *)vma->vm_private_data;
pgoff_t pgoff = vmf->pgoff;
vmf->page = kbuf->pages[vmf->pgoff];
if (pgoff >= kbuf->pagecount)
return VM_FAULT_SIGBUS;
vmf->page = kbuf->pages[pgoff];
get_page(vmf->page);
return 0;
}