CVE-2022-50772 in Linux
Riassunto
di VulDB • 16/06/2026
Nel kernel Linux, è stata risolta la seguente vulnerabilità:
netdevsim: correzione della memory leak in nsim_bus_dev_new()
Se device_register() fallisce all'interno di nsim_bus_dev_new(), il valore del riferimento (reference) in nsim_bus_dev->dev risulta essere 1. Di conseguenza, obj->name in nsim_bus_dev->dev non viene rilasciato.
oggetto unreferenced 0xffff88810352c480 (dimensione 16): comm "echo", pid 5691, jiffies 4294945921 (età 133.270s) hex dump (primi 16 byte): 6e 65 74 64 65 76 73 69 6d 31 00 00 00 00 00 00 netdevsim1...... backtrace: [<000000005e2e5e26>] __kmalloc_node_track_caller+0x3a/0xb0
[<0000000094ca4fc8>] kvasprintf+0xc3/0x160
[<00000000aad09bcc>] kvasprintf_const+0x55/0x180
[<000000009bac868d>] kobject_set_name_vargs+0x56/0x150
[<000000007c1a5d70>] dev_set_name+0xbb/0xf0
[<00000000ad0d126b>] device_add+0x1f8/0x1cb0
[<00000000c222ae24>] new_device_store+0x3b6/0x5e0
[<0000000043593421>] bus_attr_store+0x72/0xa0
[<00000000cbb1833a>] sysfs_kf_write+0x106/0x160
[<00000000d0dedb8a>] kernfs_fop_write_iter+0x3a8/0x5a0
[<00000000770b66e2>] vfs_write+0x8f0/0xc80
[<0000000078bb39be>] ksys_write+0x106/0x210
[<00000000005e55a4>] do_syscall_64+0x35/0x80
[<00000000eaa40bbc>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
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