ghsa-r29j-x5gx-p5gg
Vulnerability from github
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
{
"affected": [],
"aliases": [
"CVE-2023-53584"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-04T16:15:54Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nubifs: ubifs_releasepage: Remove ubifs_assert(0) to valid this process\n\nThere are two states for ubifs writing pages:\n1. Dirty, Private\n2. Not Dirty, Not Private\n\nThe normal process cannot go to ubifs_releasepage() which means there\nexists pages being private but not dirty. Reproducer[1] shows that it\ncould occur (which maybe related to [2]) with following process:\n\n PA PB PC\nlock(page)[PA]\nubifs_write_end\n attach_page_private // set Private\n __set_page_dirty_nobuffers // set Dirty\nunlock(page)\n\nwrite_cache_pages[PA]\n lock(page)\n clear_page_dirty_for_io(page)\t// clear Dirty\n ubifs_writepage\n\n do_truncation[PB]\n\t\t\t truncate_setsize\n\t\t\t i_size_write(inode, newsize) // newsize = 0\n\n i_size = i_size_read(inode)\t// i_size = 0\n end_index = i_size \u003e\u003e PAGE_SHIFT\n if (page-\u003eindex \u003e end_index)\n goto out // jump\nout:\nunlock(page) // Private, Not Dirty\n\n\t\t\t\t\t\tgeneric_fadvise[PC]\n\t\t\t\t\t\t lock(page)\n\t\t\t\t\t\t invalidate_inode_page\n\t\t\t\t\t\t try_to_release_page\n\t\t\t\t\t\t ubifs_releasepage\n\t\t\t\t\t\t ubifs_assert(c, 0)\n\t\t // bad assertion!\n\t\t\t\t\t\t unlock(page)\n\t\t\t truncate_pagecache[PB]\n\nThen we may get following assertion failed:\n UBIFS error (ubi0:0 pid 1683): ubifs_assert_failed [ubifs]:\n UBIFS assert failed: 0, in fs/ubifs/file.c:1513\n UBIFS warning (ubi0:0 pid 1683): ubifs_ro_mode [ubifs]:\n switched to read-only mode, error -22\n CPU: 2 PID: 1683 Comm: aa Not tainted 5.16.0-rc5-00184-g0bca5994cacc-dirty #308\n Call Trace:\n dump_stack+0x13/0x1b\n ubifs_ro_mode+0x54/0x60 [ubifs]\n ubifs_assert_failed+0x4b/0x80 [ubifs]\n ubifs_releasepage+0x67/0x1d0 [ubifs]\n try_to_release_page+0x57/0xe0\n invalidate_inode_page+0xfb/0x130\n __invalidate_mapping_pages+0xb9/0x280\n invalidate_mapping_pagevec+0x12/0x20\n generic_fadvise+0x303/0x3c0\n ksys_fadvise64_64+0x4c/0xb0\n\n[1] https://bugzilla.kernel.org/show_bug.cgi?id=215373\n[2] https://linux-mtd.infradead.narkive.com/NQoBeT1u/patch-rfc-ubifs-fix-assert-failed-in-ubifs-set-page-dirty",
"id": "GHSA-r29j-x5gx-p5gg",
"modified": "2025-10-04T18:31:15Z",
"published": "2025-10-04T18:31:15Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53584"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/66f4742e93523ab2f062d9d9828b3e590bc61536"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7750be5d3e18500b454714677463b500a0b8b0d8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd188ff1c8a1935c93a1e3cacf3be62667fdf762"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.