https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 22:05:38 +0000 https://vulnerability.circl.lu/vuln/cve-2022-50639 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>io-wq: Fix memory leak in worker creation</p> <p>If the CPU mask allocation for a node fails, then the memory allocated for the &#39;io_wqe&#39; struct of the current node doesn&#39;t get freed on the error handling path, since it has not yet been added to the &#39;wqes&#39; array.</p> <p>This was spotted when fuzzing v6.1-rc1 with Syzkaller: BUG: memory leak unreferenced object 0xffff8880093d5000 (size 1024): comm &#34;syz-executor.2&#34;, pid 7701, jiffies 4295048595 (age 13.900s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [&lt;00000000cb463369&gt;] __kmem_cache_alloc_node+0x18e/0x720 [&lt;00000000147a3f9c&gt;] kmalloc_node_trace+0x2a/0x130 [&lt;000000004e107011&gt;] io_wq_create+0x7b9/0xdc0 [&lt;00000000c38b2018&gt;] io_uring_alloc_task_context+0x31e/0x59d [&lt;00000000867399da&gt;] __io_uring_add_tctx_node.cold+0x19/0x1ba [&lt;000000007e0e7a79&gt;] io_uring_setup.cold+0x1b80/0x1dce [&lt;00000000b545e9f6&gt;] __x64_sys_io_uring_setup+0x5d/0x80 [&lt;000000008a8a7508&gt;] do_syscall_64+0x5d/0x90 [&lt;000000004ac08bec&gt;] entry_SYSCALL_64_after_hwframe+0x63/0xcd</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>io-wq: Fix memory leak in worker creation</p> <p>If the CPU mask allocation for a node fails, then the memory allocated for the &#39;io_wqe&#39; struct of the current node doesn&#39;t get freed on the error handling path, since it has not yet been added to the &#39;wqes&#39; array.</p> <p>This was spotted when fuzzing v6.1-rc1 with Syzkaller: BUG: memory leak unreferenced object 0xffff8880093d5000 (size 1024): comm &#34;syz-executor.2&#34;, pid 7701, jiffies 4295048595 (age 13.900s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [&lt;00000000cb463369&gt;] __kmem_cache_alloc_node+0x18e/0x720 [&lt;00000000147a3f9c&gt;] kmalloc_node_trace+0x2a/0x130 [&lt;000000004e107011&gt;] io_wq_create+0x7b9/0xdc0 [&lt;00000000c38b2018&gt;] io_uring_alloc_task_context+0x31e/0x59d [&lt;00000000867399da&gt;] __io_uring_add_tctx_node.cold+0x19/0x1ba [&lt;000000007e0e7a79&gt;] io_uring_setup.cold+0x1b80/0x1dce [&lt;00000000b545e9f6&gt;] __x64_sys_io_uring_setup+0x5d/0x80 [&lt;000000008a8a7508&gt;] do_syscall_64+0x5d/0x90 [&lt;000000004ac08bec&gt;] entry_SYSCALL_64_after_hwframe+0x63/0xcd</p> https://vulnerability.circl.lu/vuln/cve-2022-50639