CVE-2021-47455
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ptp: Fix possible memory leak in ptp_clock_register()
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().
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| a33121e5487b424339636b25c35d3a180eaa5f5e | affected | git | f1c96d8085588e1b997a96214b409ac3be20b524 | Unavailable | None listed |
| a33121e5487b424339636b25c35d3a180eaa5f5e | affected | git | 95c0a0c5ec8839f8f21672be786e87a100319ca8 | Unavailable | None listed |
| a33121e5487b424339636b25c35d3a180eaa5f5e | affected | git | 4225fea1cb28370086e17e82c0f69bec2779dca0 | Unavailable | None listed |
| 5230ef61882d2d14deb846eb6b48370694816e4c | affected | git | Unavailable | Unavailable | None listed |
| 6f5e3bb7879ee1eb71c6c3cbaaffbb0da6cd7d57 | affected | git | Unavailable | Unavailable | None listed |
| 89e8fc989feaac00bf1a7f9a766289422e2f5768 | affected | git | Unavailable | Unavailable | None listed |
| 2dece4d6d13fe179ee3a5991811712725a56e2f7 | affected | git | Unavailable | Unavailable | None listed |
| 0393b8720128d5b39db8523e5bfbfc689f18c37c | affected | git | Unavailable | Unavailable | None listed |
| bfa2e0cd3dfda64fde43c3dca3aeba298d2fe7ad | affected | git | Unavailable | Unavailable | None listed |
| 3.16.83 | affected | semver | 3.17 | Unavailable | None listed |
| 4.4.224 | affected | semver | 4.5 | Unavailable | None listed |
| 4.9.224 | affected | semver | 4.10 | Unavailable | None listed |
| 4.14.162 | affected | semver | 4.15 | Unavailable | None listed |
| 4.19.93 | affected | semver | 4.20 | Unavailable | None listed |
| 5.4.8 | affected | semver | 5.5 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.5 | Unavailable | None listed |
| 5.10.241 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.14.15 | unaffected | semver | Unavailable | 5.14.* | None listed |
| 5.15 | unaffected | original_commit_for_fix | Unavailable | * | None listed |