{"id":"CVE-2022-50614","summary":"misc: pci_endpoint_test: Fix pci_endpoint_test_{copy,write,read}() panic","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: pci_endpoint_test: Fix pci_endpoint_test_{copy,write,read}() panic\n\nThe dma_map_single() doesn't permit zero length mapping. It causes a follow\npanic.\n\nA panic was reported on arm64:\n\n[   60.137988] ------------[ cut here ]------------\n[   60.142630] kernel BUG at kernel/dma/swiotlb.c:624!\n[   60.147508] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP\n[   60.152992] Modules linked in: dw_hdmi_cec crct10dif_ce simple_bridge rcar_fdp1 vsp1 rcar_vin videobuf2_vmalloc rcar_csi2 v4l\n2_mem2mem videobuf2_dma_contig videobuf2_memops pci_endpoint_test videobuf2_v4l2 videobuf2_common rcar_fcp v4l2_fwnode v4l2_asyn\nc videodev mc gpio_bd9571mwv max9611 pwm_rcar ccree at24 authenc libdes phy_rcar_gen3_usb3 usb_dmac display_connector pwm_bl\n[   60.186252] CPU: 0 PID: 508 Comm: pcitest Not tainted 6.0.0-rc1rpci-dev+ #237\n[   60.193387] Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT)\n[   60.201302] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[   60.208263] pc : swiotlb_tbl_map_single+0x2c0/0x590\n[   60.213149] lr : swiotlb_map+0x88/0x1f0\n[   60.216982] sp : ffff80000a883bc0\n[   60.220292] x29: ffff80000a883bc0 x28: 0000000000000000 x27: 0000000000000000\n[   60.227430] x26: 0000000000000000 x25: ffff0004c0da20d0 x24: ffff80000a1f77c0\n[   60.234567] x23: 0000000000000002 x22: 0001000040000010 x21: 000000007a000000\n[   60.241703] x20: 0000000000200000 x19: 0000000000000000 x18: 0000000000000000\n[   60.248840] x17: 0000000000000000 x16: 0000000000000000 x15: ffff0006ff7b9180\n[   60.255977] x14: ffff0006ff7b9180 x13: 0000000000000000 x12: 0000000000000000\n[   60.263113] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000\n[   60.270249] x8 : 0001000000000010 x7 : ffff0004c6754b20 x6 : 0000000000000000\n[   60.277385] x5 : ffff0004c0da2090 x4 : 0000000000000000 x3 : 0000000000000001\n[   60.284521] x2 : 0000000040000000 x1 : 0000000000000000 x0 : 0000000040000010\n[   60.291658] Call trace:\n[   60.294100]  swiotlb_tbl_map_single+0x2c0/0x590\n[   60.298629]  swiotlb_map+0x88/0x1f0\n[   60.302115]  dma_map_page_attrs+0x188/0x230\n[   60.306299]  pci_endpoint_test_ioctl+0x5e4/0xd90 [pci_endpoint_test]\n[   60.312660]  __arm64_sys_ioctl+0xa8/0xf0\n[   60.316583]  invoke_syscall+0x44/0x108\n[   60.320334]  el0_svc_common.constprop.0+0xcc/0xf0\n[   60.325038]  do_el0_svc+0x2c/0xb8\n[   60.328351]  el0_svc+0x2c/0x88\n[   60.331406]  el0t_64_sync_handler+0xb8/0xc0\n[   60.335587]  el0t_64_sync+0x18c/0x190\n[   60.339251] Code: 52800013 d2e00414 35fff45c d503201f (d4210000)\n[   60.345344] ---[ end trace 0000000000000000 ]---\n\nTo fix it, this patch adds a checking the payload length if it is zero.","modified":"2026-04-02T08:28:38.555786Z","published":"2025-12-08T01:16:26.689Z","related":["SUSE-SU-2026:0263-1","SUSE-SU-2026:0317-1","SUSE-SU-2026:0411-1","SUSE-SU-2026:0617-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50614.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0df206bdc6204b758585bbe159a55e23e7917b13"},{"type":"WEB","url":"https://git.kernel.org/stable/c/279116cb0bc5cd8af65d6a00ffe074bd09842f88"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6c01739c2aba19553beb20491b05515af9246f0f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8e30538eca016de8e252bef174beadecd64239f0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e5ebcbb4f967af2083d409271aaf7c7d8351603f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50614.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50614"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"343dc693f7b79885197f9d37dd8b711b0e3ffc8f"},{"fixed":"0df206bdc6204b758585bbe159a55e23e7917b13"},{"fixed":"e5ebcbb4f967af2083d409271aaf7c7d8351603f"},{"fixed":"279116cb0bc5cd8af65d6a00ffe074bd09842f88"},{"fixed":"6c01739c2aba19553beb20491b05515af9246f0f"},{"fixed":"8e30538eca016de8e252bef174beadecd64239f0"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50614.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"5.10.148"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.74"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.20.0"},{"fixed":"6.0.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50614.json"}}],"schema_version":"1.7.5"}