CVE-2023-53227

kernel: ubifs: dirty_cow_znode: Fix memleak in error handling path

Published Sep 15, 2025 CVSS 3.1 · 5.5 Medium EPSS n/a KEV · Not listed

Description

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

No data.

No data available yet.

No remediation available yet

Source	ID	Title
EUVD	EUVD-2023-59857	This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

No CVSS v4.0

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://lore.kernel.org/linux-cve-announce/2025091514-CVE-2023-53227-6a15@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2023-53227
https://www.cve.org/CVERecord?id=CVE-2023-53227

History

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
Vendors & Products		Linux Linux linux Kernel

Type	Values Removed	Values Added
References	https://git.kernel.org/stable/c/011050fc471cd0b32410694facb47bac20e7262b https://git.kernel.org/stable/c/10b6c359e374df1120b951768260083ef047d7fb https://git.kernel.org/stable/c/122deabfe1428bffe95e2bf364ff8a5059bdf089 https://git.kernel.org/stable/c/510b80abe8d2d89e4ff21d71f1804ba2e5d3a96b https://git.kernel.org/stable/c/5759076fc7c54614084002345a21bc2c578bf4a8 https://git.kernel.org/stable/c/76c488e8a0e2783c6d8753cb7354a420593e8c30 https://git.kernel.org/stable/c/9d4768523b092bfb9a9bfa6b1d903b968c8008cf https://git.kernel.org/stable/c/bbcf899036eeb98c3a938fb08946c6b52771f71c

Type	Values Removed	Values Added
Description	In the Linux kernel, the following vulnerability has been resolved: ubifs: dirty_cow_znode: Fix memleak in error handling path Following process will cause a memleak for copied up znode: dirty_cow_znode zn = copy_znode(c, znode); err = insert_old_idx(c, zbr->lnum, zbr->offs); if (unlikely(err)) return ERR_PTR(err); // No one refers to zn. Fix it by adding copied znode back to tnc, then it will be freed by ubifs_destroy_tnc_subtree() while closing tnc. Fetch a reproducer in [Link].	This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Title	ubifs: dirty_cow_znode: Fix memleak in error handling path	kernel: ubifs: dirty_cow_znode: Fix memleak in error handling path

Type	Values Removed	Values Added
References		https://lore.kernel.org/linux-cve-announce/2025091514-CVE-2023-53227-6a15@gregkh/T https://nvd.nist.gov/vuln/detail/CVE-2023-53227 https://www.cve.org/CVERecord?id=CVE-2023-53227
Metrics	threat_severity `None`	cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` threat_severity `Low`

Type	Values Removed	Values Added
Description		In the Linux kernel, the following vulnerability has been resolved: ubifs: dirty_cow_znode: Fix memleak in error handling path Following process will cause a memleak for copied up znode: dirty_cow_znode zn = copy_znode(c, znode); err = insert_old_idx(c, zbr->lnum, zbr->offs); if (unlikely(err)) return ERR_PTR(err); // No one refers to zn. Fix it by adding copied znode back to tnc, then it will be freed by ubifs_destroy_tnc_subtree() while closing tnc. Fetch a reproducer in [Link].
Title		ubifs: dirty_cow_znode: Fix memleak in error handling path
References		https://git.kernel.org/stable/c/011050fc471cd0b32410694facb47bac20e7262b https://git.kernel.org/stable/c/10b6c359e374df1120b951768260083ef047d7fb https://git.kernel.org/stable/c/122deabfe1428bffe95e2bf364ff8a5059bdf089 https://git.kernel.org/stable/c/510b80abe8d2d89e4ff21d71f1804ba2e5d3a96b https://git.kernel.org/stable/c/5759076fc7c54614084002345a21bc2c578bf4a8 https://git.kernel.org/stable/c/76c488e8a0e2783c6d8753cb7354a420593e8c30 https://git.kernel.org/stable/c/9d4768523b092bfb9a9bfa6b1d903b968c8008cf https://git.kernel.org/stable/c/bbcf899036eeb98c3a938fb08946c6b52771f71c