{"id":"DEBIAN-CVE-2022-50614","details":"In the Linux kernel, the following vulnerability has been resolved:  misc: pci_endpoint_test: Fix pci_endpoint_test_{copy,write,read}() panic  The dma_map_single() doesn't permit zero length mapping. It causes a follow panic.  A panic was reported on arm64:  [   60.137988] ------------[ cut here ]------------ [   60.142630] kernel BUG at kernel/dma/swiotlb.c:624! [   60.147508] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [   60.152992] Modules linked in: dw_hdmi_cec crct10dif_ce simple_bridge rcar_fdp1 vsp1 rcar_vin videobuf2_vmalloc rcar_csi2 v4l 2_mem2mem videobuf2_dma_contig videobuf2_memops pci_endpoint_test videobuf2_v4l2 videobuf2_common rcar_fcp v4l2_fwnode v4l2_asyn c videodev mc gpio_bd9571mwv max9611 pwm_rcar ccree at24 authenc libdes phy_rcar_gen3_usb3 usb_dmac display_connector pwm_bl [   60.186252] CPU: 0 PID: 508 Comm: pcitest Not tainted 6.0.0-rc1rpci-dev+ #237 [   60.193387] Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT) [   60.201302] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [   60.208263] pc : swiotlb_tbl_map_single+0x2c0/0x590 [   60.213149] lr : swiotlb_map+0x88/0x1f0 [   60.216982] sp : ffff80000a883bc0 [   60.220292] x29: ffff80000a883bc0 x28: 0000000000000000 x27: 0000000000000000 [   60.227430] x26: 0000000000000000 x25: ffff0004c0da20d0 x24: ffff80000a1f77c0 [   60.234567] x23: 0000000000000002 x22: 0001000040000010 x21: 000000007a000000 [   60.241703] x20: 0000000000200000 x19: 0000000000000000 x18: 0000000000000000 [   60.248840] x17: 0000000000000000 x16: 0000000000000000 x15: ffff0006ff7b9180 [   60.255977] x14: ffff0006ff7b9180 x13: 0000000000000000 x12: 0000000000000000 [   60.263113] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 [   60.270249] x8 : 0001000000000010 x7 : ffff0004c6754b20 x6 : 0000000000000000 [   60.277385] x5 : ffff0004c0da2090 x4 : 0000000000000000 x3 : 0000000000000001 [   60.284521] x2 : 0000000040000000 x1 : 0000000000000000 x0 : 0000000040000010 [   60.291658] Call trace: [   60.294100]  swiotlb_tbl_map_single+0x2c0/0x590 [   60.298629]  swiotlb_map+0x88/0x1f0 [   60.302115]  dma_map_page_attrs+0x188/0x230 [   60.306299]  pci_endpoint_test_ioctl+0x5e4/0xd90 [pci_endpoint_test] [   60.312660]  __arm64_sys_ioctl+0xa8/0xf0 [   60.316583]  invoke_syscall+0x44/0x108 [   60.320334]  el0_svc_common.constprop.0+0xcc/0xf0 [   60.325038]  do_el0_svc+0x2c/0xb8 [   60.328351]  el0_svc+0x2c/0x88 [   60.331406]  el0t_64_sync_handler+0xb8/0xc0 [   60.335587]  el0t_64_sync+0x18c/0x190 [   60.339251] Code: 52800013 d2e00414 35fff45c d503201f (d4210000) [   60.345344] ---[ end trace 0000000000000000 ]---  To fix it, this patch adds a checking the payload length if it is zero.","modified":"2026-09-01T20:05:00.479172649Z","published":"2025-12-08T02:15:47.063Z","upstream":["CVE-2022-50614"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50614"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50614.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50614.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.2-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50614.json"}}],"schema_version":"1.9.0"}