7.8
HIGH
CVSS 3.1
CVE-2026-53388
fuse: re-lock request before replacing page cache folio
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before replacing page cache folio fuse_try_move_folio() unlocks the request on entry but does not re-lock it on the success path. This means fuse_chan_abort() can end the request and free the fuse_io_args (eg fuse_readpages_end()) while the subsequent copy chain logic after fuse_try_move_folio() accesses the fuse_io_args, leading to use-after-free issues. Fix this by calling lock_request() before replace_page_cache_folio(). This ensures the request is locked on the success path which will prevent the fuse_io_args from being freed while the later copying logic runs, and also ensures that the ap->folios[i]->mapping is never null since ap->folios[i] will always point to the newfolio after replace_page_cache_folio().
Details
INFO
Published Date :
July 19, 2026, 12:16 p.m.
Last Modified :
Aug. 17, 2026, 5:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Apply kernel updates to address use-after-free by ensuring requests are properly locked.
- Update the Linux kernel to the latest version.
- Ensure all relevant security patches are applied.
- Restart affected services or the system.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53388.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53388 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53388
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53388 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53388 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '7c18691e0cfda29672f79bafde8abdb7710674f6', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '5927b43a4f8d89e86930f524bf63e9c7e66f61b4', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '030fe3e9d8abdee303dd7e9e42f45082d382a407', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '46473ddccdc5065033e397d6e62c280dbcd3d9c2', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'af2892249d982a1c036ca456cc135374e68b6677', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '0223f452532d9cd8a5e87c45de828fd93c99bd25', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'e28db6ac4792d065ab32565fd9f0a2361c3d4666', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'a078484921052d0badd827fcc2770b5cfc1d4120', 'versionType': 'git'}], 'programFiles': ['fs/fuse/dev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.35'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.35', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.211', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.177', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.144', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.37', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.14', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1.2', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/fuse/dev.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '7c18691e0cfda29672f79bafde8abdb7710674f6', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '5927b43a4f8d89e86930f524bf63e9c7e66f61b4', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '030fe3e9d8abdee303dd7e9e42f45082d382a407', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '46473ddccdc5065033e397d6e62c280dbcd3d9c2', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'af2892249d982a1c036ca456cc135374e68b6677', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '0223f452532d9cd8a5e87c45de828fd93c99bd25', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'e28db6ac4792d065ab32565fd9f0a2361c3d4666', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'a078484921052d0badd827fcc2770b5cfc1d4120', 'versionType': 'git'}], 'programFiles': ['fs/fuse/dev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.35'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.35', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.211', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.177', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.144', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.37', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.14', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1.2', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/fuse/dev.c'], 'defaultStatus': 'affected'}] -
Initial Analysis by [email protected]
Jul. 29, 2026
Action Type Old Value New Value Added CWE CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.177 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.144 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.95 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.37 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 7.1 up to (excluding) 7.1.2 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.35 up to (excluding) 5.15.211 Added Reference Type kernel.org: https://git.kernel.org/stable/c/0223f452532d9cd8a5e87c45de828fd93c99bd25 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/030fe3e9d8abdee303dd7e9e42f45082d382a407 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/46473ddccdc5065033e397d6e62c280dbcd3d9c2 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/5927b43a4f8d89e86930f524bf63e9c7e66f61b4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7c18691e0cfda29672f79bafde8abdb7710674f6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a078484921052d0badd827fcc2770b5cfc1d4120 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/af2892249d982a1c036ca456cc135374e68b6677 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e28db6ac4792d065ab32565fd9f0a2361c3d4666 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 20, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '7c18691e0cfda29672f79bafde8abdb7710674f6', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '5927b43a4f8d89e86930f524bf63e9c7e66f61b4', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '030fe3e9d8abdee303dd7e9e42f45082d382a407', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '46473ddccdc5065033e397d6e62c280dbcd3d9c2', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'af2892249d982a1c036ca456cc135374e68b6677', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': '0223f452532d9cd8a5e87c45de828fd93c99bd25', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'e28db6ac4792d065ab32565fd9f0a2361c3d4666', 'versionType': 'git'}, {'status': 'affected', 'version': 'ce534fb052928ce556639d7ecf01cbf4e01321e1', 'lessThan': 'a078484921052d0badd827fcc2770b5cfc1d4120', 'versionType': 'git'}], 'programFiles': ['fs/fuse/dev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.35'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.35', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.211', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.177', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.144', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.95', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.37', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.14', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1.2', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/fuse/dev.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before replacing page cache folio fuse_try_move_folio() unlocks the request on entry but does not re-lock it on the success path. This means fuse_chan_abort() can end the request and free the fuse_io_args (eg fuse_readpages_end()) while the subsequent copy chain logic after fuse_try_move_folio() accesses the fuse_io_args, leading to use-after-free issues. Fix this by calling lock_request() before replace_page_cache_folio(). This ensures the request is locked on the success path which will prevent the fuse_io_args from being freed while the later copying logic runs, and also ensures that the ap->folios[i]->mapping is never null since ap->folios[i] will always point to the newfolio after replace_page_cache_folio(). Added Reference https://git.kernel.org/stable/c/0223f452532d9cd8a5e87c45de828fd93c99bd25 Added Reference https://git.kernel.org/stable/c/030fe3e9d8abdee303dd7e9e42f45082d382a407 Added Reference https://git.kernel.org/stable/c/46473ddccdc5065033e397d6e62c280dbcd3d9c2 Added Reference https://git.kernel.org/stable/c/5927b43a4f8d89e86930f524bf63e9c7e66f61b4 Added Reference https://git.kernel.org/stable/c/7c18691e0cfda29672f79bafde8abdb7710674f6 Added Reference https://git.kernel.org/stable/c/a078484921052d0badd827fcc2770b5cfc1d4120 Added Reference https://git.kernel.org/stable/c/af2892249d982a1c036ca456cc135374e68b6677 Added Reference https://git.kernel.org/stable/c/e28db6ac4792d065ab32565fd9f0a2361c3d4666
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.