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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2023-53826 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ubi: Fix UAF wear-leveling entry in eraseblk_count_seq_show() Wear-leveling entry could be freed in error path, which may be accessed again in eraseblk_count_seq_show(), for example: __erase_worker eraseblk_count_seq_show wl = ubi->lookuptbl[*block_number] if (wl) wl_entry_destroy ubi->lookuptbl[e->pnum] = NULL kmem_cache_free(ubi_wl_entry_slab, e) erase_count = wl->ec // UAF! Wear-leveling entry updating/accessing in ubi->lookuptbl should be protected by ubi->wl_lock, fix it by adding ubi->wl_lock to serialize wl entry accessing between wl_entry_destroy() and eraseblk_count_seq_show(). Fetch a reproducer in [Link].


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/1cb14c06d6035539ef4215c4ba0871aea71d7c38 kernel.org
https://git.kernel.org/stable/c/3f9b63dfce44a7c3c095dd93d910408e07ab1845 kernel.org
https://git.kernel.org/stable/c/79548ccdd992707879b4b683b7251c58ddf26f12 kernel.org
https://git.kernel.org/stable/c/84250da1c63cb7d421a3b4812b5c2ce2e47d31a1 kernel.org
https://git.kernel.org/stable/c/84253f3c2dad6be10d30c92626c763d9a9f512ad kernel.org
https://git.kernel.org/stable/c/9d448dd6bcb61a508204b57ea1f454ba9bac2f24 kernel.org
https://git.kernel.org/stable/c/a100de2974d208cfca032179b02ed4d1a0a7f143 kernel.org
https://git.kernel.org/stable/c/a240bc5c43130c6aa50831d7caaa02a1d84e1bce kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-53826
NVD Published Date:
12/09/2025
NVD Last Modified:
04/14/2026
Source:
kernel.org