概要

In the Linux kernel, the following vulnerability has been resolved:RDMA/cma: Fix kmemleak in rdma_core observed during blktests nvme/rdma use siwWhen running blktests nvme/rdma, the following kmemleak issue will appear.kmemleak: Kernel memory leak detector initialized (mempool available:36041)kmemleak: Automatic memory scanning thread startedkmemleak: 2 new suspected memory leaks (see /sys/kernel/debug/kmemleak)kmemleak: 8 new suspected memory leaks (see /sys/kernel/debug/kmemleak)kmemleak: 17 new suspected memory leaks (see /sys/kernel/debug/kmemleak)kmemleak: 4 new suspected memory leaks (see /sys/kernel/debug/kmemleak)unreferenced object 0xffff88855da53400 (size 192): comm rdma , pid 10630, jiffies 4296575922 hex dump (first 32 bytes): 37 00 00 00 00 00 00 00 c0 ff ff ff 1f 00 00 00 7............... 10 34 a5 5d 85 88 ff ff 10 34 a5 5d 85 88 ff ff .4.].....4.].... backtrace (crc 47f66721): [<ffffffff911251bd&gt;] kmalloc_trace+0x30d/0x3b0 [<ffffffffc2640ff7&gt;] alloc_gid_entry+0x47/0x380 [ib_core] [<ffffffffc2642206&gt;] add_modify_gid+0x166/0x930 [ib_core] [<ffffffffc2643468&gt;] ib_cache_update.part.0+0x6d8/0x910 [ib_core] [<ffffffffc2644e1a&gt;] ib_cache_setup_one+0x24a/0x350 [ib_core] [<ffffffffc263949e&gt;] ib_register_device+0x9e/0x3a0 [ib_core] [<ffffffffc2a3d389&gt;] 0xffffffffc2a3d389 [<ffffffffc2688cd8&gt;] nldev_newlink+0x2b8/0x520 [ib_core] [<ffffffffc2645fe3&gt;] rdma_nl_rcv_msg+0x2c3/0x520 [ib_core] [<ffffffffc264648c&gt;]rdma_nl_rcv_skb.constprop.0.isra.0+0x23c/0x3a0 [ib_core] [<ffffffff9270e7b5&gt;] netlink_unicast+0x445/0x710 [<ffffffff9270f1f1&gt;] netlink_sendmsg+0x761/0xc40 [<ffffffff9249db29&gt;] __sys_sendto+0x3a9/0x420 [<ffffffff9249dc8c&gt;] __x64_sys_sendto+0xdc/0x1b0 [<ffffffff92db0ad3&gt;] do_syscall_64+0x93/0x180 [<ffffffff92e00126&gt;] entry_SYSCALL_64_after_hwframe+0x71/0x79The root cause: rdma_put_gid_attr is not called when sgid_attr is setto ERR_PTR(-ENODEV).

CVSS v3 指标

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