https://db.gcve.eu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 01:49:23 +0000 https://db.gcve.eu/vuln/cve-2022-49393 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>misc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl</p> <p>This is another instance of incorrect use of list iterator and checking it for NULL.</p> <p>The list iterator value &#39;map&#39; will *always* be set and non-NULL by list_for_each_entry(), so it is incorrect to assume that the iterator value will be NULL if the list is empty (in this case, the check &#39;if (!map) {&#39; will always be false and never exit as expected).</p> <p>To fix the bug, use a new variable &#39;iter&#39; as the list iterator, while use the original variable &#39;map&#39; as a dedicated pointer to point to the found element.</p> <p>Without this patch, Kernel crashes with below trace:</p> <p>Unable to handle kernel access to user memory outside uaccess routines at virtual address 0000ffff7fb03750 ... Call trace: fastrpc_map_create+0x70/0x290 [fastrpc] fastrpc_req_mem_map+0xf0/0x2dc [fastrpc] fastrpc_device_ioctl+0x138/0xc60 [fastrpc] __arm64_sys_ioctl+0xa8/0xec invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0xd4/0xfc do_el0_svc+0x28/0x90 el0_svc+0x3c/0x130 el0t_64_sync_handler+0xa4/0x130 el0t_64_sync+0x18c/0x190 Code: 14000016 f94000a5 eb05029f 54000260 (b94018a6) ---[ end trace 0000000000000000 ]---</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>misc: fastrpc: fix list iterator in fastrpc_req_mem_unmap_impl</p> <p>This is another instance of incorrect use of list iterator and checking it for NULL.</p> <p>The list iterator value &#39;map&#39; will *always* be set and non-NULL by list_for_each_entry(), so it is incorrect to assume that the iterator value will be NULL if the list is empty (in this case, the check &#39;if (!map) {&#39; will always be false and never exit as expected).</p> <p>To fix the bug, use a new variable &#39;iter&#39; as the list iterator, while use the original variable &#39;map&#39; as a dedicated pointer to point to the found element.</p> <p>Without this patch, Kernel crashes with below trace:</p> <p>Unable to handle kernel access to user memory outside uaccess routines at virtual address 0000ffff7fb03750 ... Call trace: fastrpc_map_create+0x70/0x290 [fastrpc] fastrpc_req_mem_map+0xf0/0x2dc [fastrpc] fastrpc_device_ioctl+0x138/0xc60 [fastrpc] __arm64_sys_ioctl+0xa8/0xec invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0xd4/0xfc do_el0_svc+0x28/0x90 el0_svc+0x3c/0x130 el0t_64_sync_handler+0xa4/0x130 el0t_64_sync+0x18c/0x190 Code: 14000016 f94000a5 eb05029f 54000260 (b94018a6) ---[ end trace 0000000000000000 ]---</p> https://db.gcve.eu/vuln/cve-2022-49393