发布于3月6日3月6日 Members Oracle Linux: CVE-2021-47455: ELSA-2024-7000:kernel security update (IMPORTANT) (Multiple Advisories) Severity 5 CVSS (AV:L/AC:L/Au:M/C:C/I:N/A:P) Published 05/22/2024 Created 10/24/2024 Added 10/16/2024 Modified 12/10/2024 Description In the Linux kernel, the following vulnerability has been resolved: ptp: Fix possible memory leak in ptp_clock_register() I got memory leak as follows when doing fault injection test: unreferenced object 0xffff88800906c618 (size 8): comm "i2c-idt82p33931", pid 4421, jiffies 4294948083 (age 13.188s) hex dump (first 8 bytes): 70 74 70 30 00 00 00 00ptp0.... backtrace: [<00000000312ed458>] __kmalloc_track_caller+0x19f/0x3a0 [<0000000079f6e2ff>] kvasprintf+0xb5/0x150 [<0000000026aae54f>] kvasprintf_const+0x60/0x190 [<00000000f323a5f7>] kobject_set_name_vargs+0x56/0x150 [<000000004e35abdd>] dev_set_name+0xc0/0x100 [<00000000f20cfe25>] ptp_clock_register+0x9f4/0xd30 [ptp] [<000000008bb9f0de>] idt82p33_probe.cold+0x8b6/0x1561 [ptp_idt82p33] When posix_clock_register() returns an error, the name allocated in dev_set_name() will be leaked, the put_device() should be used to give up the device reference, then the name will be freed in kobject_cleanup() and other memory will be freed in ptp_clock_release(). Solution(s) oracle-linux-upgrade-kernel References https://attackerkb.com/topics/cve-2021-47455 CVE - 2021-47455 ELSA-2024-7000
