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 00 ptp0.... 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().
Product status
a33121e5487b424339636b25c35d3a180eaa5f5e (git) before f1c96d8085588e1b997a96214b409ac3be20b524
a33121e5487b424339636b25c35d3a180eaa5f5e (git) before 95c0a0c5ec8839f8f21672be786e87a100319ca8
a33121e5487b424339636b25c35d3a180eaa5f5e (git) before 4225fea1cb28370086e17e82c0f69bec2779dca0
5230ef61882d2d14deb846eb6b48370694816e4c (git)
6f5e3bb7879ee1eb71c6c3cbaaffbb0da6cd7d57 (git)
89e8fc989feaac00bf1a7f9a766289422e2f5768 (git)
2dece4d6d13fe179ee3a5991811712725a56e2f7 (git)
0393b8720128d5b39db8523e5bfbfc689f18c37c (git)
bfa2e0cd3dfda64fde43c3dca3aeba298d2fe7ad (git)
5.5
Any version before 5.5
5.10.241 (semver)
5.14.15 (semver)
5.15 (original_commit_for_fix)
References
git.kernel.org/...c/f1c96d8085588e1b997a96214b409ac3be20b524
git.kernel.org/...c/95c0a0c5ec8839f8f21672be786e87a100319ca8
git.kernel.org/...c/4225fea1cb28370086e17e82c0f69bec2779dca0
