# CVE-2023-53584: linux: In the Linux kernel, the following vulnerability has been resolved:  ubifs: ubifs_releasepage: Remove ubifs_assert(0)...

CVE-2023-53584 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53584, released October 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53584
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0016
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 4, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  ubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process  There are two states for ubifs writing pages: 1. Dirty, Private 2. Not Dirty, Not Private  The normal process cannot go to ubifs_releasepage() which means there exists pages being private but not dirty. Reproducer[1] shows that it could occur (which maybe related to [2]) with following process:       PA                     PB                    PC lock(page)[PA] ubifs_write_end   attach_page_private         // set Private   __set_page_dirty_nobuffers  // set Dirty unlock(page)  write_cache_pages[PA]   lock(page)   clear_page_dirty_for_io(page)	// clear Dirty   ubifs_writepage                          do_truncation[PB] 			  truncate_setsize 			    i_size_write(inode, newsize) // newsize = 0      i_size = i_size_read(inode)	// i_size = 0     end_index = i_size >> PAGE_SHIFT     if (page->index > end_index)       goto out // jump out: unlock(page)   // Private, Not Dirty  						generic_fadvise[PC] 						  lock(page) 						  invalidate_inode_page 						    try_to_release_page 						      ubifs_releasepage 						        ubifs_assert(c, 0) 		                                        // bad assertion! 						  unlock(page) 			  truncate_pagecache[PB]  Then we may get following assertion failed:   UBIFS error (ubi0:0 pid 1683): ubifs_assert_failed [ubifs]:   UBIFS assert failed: 0, in fs/ubifs/file.c:1513   UBIFS warning (ubi0:0 pid 1683): ubifs_ro_mode [ubifs]:   switched to read-only mode, error -22   CPU: 2 PID: 1683 Comm: aa Not tainted 5.16.0-rc5-00184-g0bca5994cacc-dirty #308   Call Trace:     dump_stack+0x13/0x1b     ubifs_ro_mode+0x54/0x60 [ubifs]     ubifs_assert_failed+0x4b/0x80 [ubifs]     ubifs_releasepage+0x67/0x1d0 [ubifs]     try_to_release_page+0x57/0xe0     invalidate_inode_page+0xfb/0x130     __invalidate_mapping_pages+0xb9/0x280     invalidate_mapping_pagevec+0x12/0x20     generic_fadvise+0x303/0x3c0     ksys_fadvise64_64+0x4c/0xb0  [1] https://bugzilla.kernel.org/show_bug.cgi?id=215373 [2] https://linux-mtd.infradead.narkive.com/NQoBeT1u/patch-rfc-ubifs-fix-assert-failed-in-ubifs-set-page-dirty

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.20-1 | [DEBIAN-CVE-2023-53584](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53584.md) | Oct 4, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.20-1 | [DEBIAN-CVE-2023-53584](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53584.md) | Oct 4, 2025 |
| Linux | linux Debian 14 | 6.1.20-1 | [DEBIAN-CVE-2023-53584](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53584.md) | Oct 4, 2025 |

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