# CVE-2023-53276: linux: In the Linux kernel, the following vulnerability has been resolved:  ubifs: Free memory for tmpfile name  When openin...

CVE-2023-53276 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53276, released September 16, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53276
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 16, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  ubifs: Free memory for tmpfile name  When opening a ubifs tmpfile on an encrypted directory, function fscrypt_setup_filename allocates memory for the name that is to be stored in the directory entry, but after the name has been copied to the directory entry inode, the memory is not freed.  When running kmemleak on it we see that it is registered as a leak. The report below is triggered by a simple program 'tmpfile' just opening a tmpfile:    unreferenced object 0xffff88810178f380 (size 32):     comm "tmpfile", pid 509, jiffies 4294934744 (age 1524.742s)     backtrace:       __kmem_cache_alloc_node       __kmalloc       fscrypt_setup_filename       ubifs_tmpfile       vfs_tmpfile       path_openat  Free this memory after it has been copied to the inode.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.37-1 | [DEBIAN-CVE-2023-53276](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53276.md) | Sep 16, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-53276](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53276.md) | Sep 16, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-53276](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53276.md) | Sep 16, 2025 |

---

Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.