CVE-2026-53010
ksmbd: fix use-after-free in smb2_open during durable reconnect
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_open during durable reconnect In smb2_open, the call to ksmbd_put_durable_fd(fp) drops the reference to the durable file descriptor early during the durable reconnect process. If an error occurs subsequently (eg, ksmbd_iov_pin_rsp fails) or a scavenger accesses the file, it leads to a use-after-free when accessing fp properties (eg fp->create_time). Move the single put to the end of the function below err_out2 so fp stays valid until smb2_open returns.
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
Sept. 14, 2026, 12:17 p.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Move the ksmbd_put_durable_fd call to the end of the function.
- Ensure fp remains valid until smb2_open returns.
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-2026-53010.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53010 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-2026-53010
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-2026-53010 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53010 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.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Sep. 14, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/53xxx/CVE-2026-53010.json">CVE-2026-53010</a> Added Reference https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9 Added Reference https://git.kernel.org/stable/c/4db3dcac84c2f14a45ae201efb38de1fb1bfc009 Added Reference https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9 Added Reference https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3 Added Reference https://git.kernel.org/stable/c/f0ff7f12398e85b3a11745ff7feab6246f3d75c2 Removed Reference https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9 Removed Reference https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9 Removed Reference https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3 Removed Reference Type https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9 Types: Patch Removed Reference Type https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9 Types: Patch Removed Reference Type https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3 Types: Patch -
Initial Analysis by [email protected]
Jul. 14, 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) 6.6.32 up to (excluding) 6.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 7.0.10 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9 up to (excluding) 6.18.33 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3 Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 24, 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': 'c8efcc786146a951091588e5fa7e3c754850cb3c', 'lessThan': 'ce2e164c1c51c3f7813b80f8c926836e896bcbb3', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8efcc786146a951091588e5fa7e3c754850cb3c', 'lessThan': '97a0cd55283b4e63fd92804da91c8d9896adcad9', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8efcc786146a951091588e5fa7e3c754850cb3c', 'lessThan': '1baff47b81f94f9231c91236aa511420d0e266b9', 'versionType': 'git'}, {'status': 'affected', 'version': '8df4bcdb0a4232192b2445256c39b787d58ef14d', 'versionType': 'git'}, {'status': 'affected', 'version': '6.6.32', 'lessThan': '6.7', 'versionType': 'semver'}], 'programFiles': ['fs/smb/server/smb2pdu.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.9'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.9', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['fs/smb/server/smb2pdu.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in smb2_open during durable reconnect In smb2_open, the call to ksmbd_put_durable_fd(fp) drops the reference to the durable file descriptor early during the durable reconnect process. If an error occurs subsequently (eg, ksmbd_iov_pin_rsp fails) or a scavenger accesses the file, it leads to a use-after-free when accessing fp properties (eg fp->create_time). Move the single put to the end of the function below err_out2 so fp stays valid until smb2_open returns. Added Reference https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9 Added Reference https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9 Added Reference https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3