CVE-2026-52967
smb/client: fix possible infinite loop and oob read in symlink_data()
Description
In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infinite loop and oob read in symlink_data() On 32-bit architectures, the infinite loop is as follows: len = p->ErrorDataLength == 0xfffffff8 u8 *next = p->ErrorContextData + len next == p On 32-bit architectures, the out-of-bounds read is as follows: len = p->ErrorDataLength == 0xfffffff0 u8 *next = p->ErrorContextData + len next == (u8 *)p - 8
INFO
Published Date :
June 24, 2026, 5:17 p.m.
Last Modified :
July 14, 2026, 8:20 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 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel to the latest version.
- Apply the specific patch for the symlink_data function.
- Reboot the system after applying the update.
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-2026-52967.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-52967 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-2026-52967
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-2026-52967 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-52967 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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Initial Analysis by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added CWE CWE-125 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.141 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.91 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.33 *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) 6.0.16 up to (excluding) 6.1.175 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1b9331b16b0ed9414dcf7583d8134bdfeb117aae Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/1cfa2d59f669db28d6292d10ff87ca6837c781b0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7d9a7f1f96cd617ee9e75bb22217c709038e26b8 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/97a05b0ae9ea5ec052be2eef0f9cc7ce03501bbb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b41598bf54b3fe528994e573df6008f8f4d0a4f4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cd4b9b662f0fb9aa97ee6bf9034eca76fc6cab23 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:R/S:U/C:H/I:N/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': '76894f3e2f71177747b8b4763fb180e800279585', 'lessThan': '1cfa2d59f669db28d6292d10ff87ca6837c781b0', 'versionType': 'git'}, {'status': 'affected', 'version': '76894f3e2f71177747b8b4763fb180e800279585', 'lessThan': 'b41598bf54b3fe528994e573df6008f8f4d0a4f4', 'versionType': 'git'}, {'status': 'affected', 'version': '76894f3e2f71177747b8b4763fb180e800279585', 'lessThan': 'cd4b9b662f0fb9aa97ee6bf9034eca76fc6cab23', 'versionType': 'git'}, {'status': 'affected', 'version': '76894f3e2f71177747b8b4763fb180e800279585', 'lessThan': '97a05b0ae9ea5ec052be2eef0f9cc7ce03501bbb', 'versionType': 'git'}, {'status': 'affected', 'version': '76894f3e2f71177747b8b4763fb180e800279585', 'lessThan': '1b9331b16b0ed9414dcf7583d8134bdfeb117aae', 'versionType': 'git'}, {'status': 'affected', 'version': '76894f3e2f71177747b8b4763fb180e800279585', 'lessThan': '7d9a7f1f96cd617ee9e75bb22217c709038e26b8', 'versionType': 'git'}, {'status': 'affected', 'version': '2d046892a493d9760c35fdaefc3017f27f91b621', 'versionType': 'git'}, {'status': 'affected', 'version': '6.0.16', 'lessThan': '6.1', 'versionType': 'semver'}], 'programFiles': ['fs/smb/client/smb2file.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.1', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.175', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'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/client/smb2file.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: smb/client: fix possible infinite loop and oob read in symlink_data() On 32-bit architectures, the infinite loop is as follows: len = p->ErrorDataLength == 0xfffffff8 u8 *next = p->ErrorContextData + len next == p On 32-bit architectures, the out-of-bounds read is as follows: len = p->ErrorDataLength == 0xfffffff0 u8 *next = p->ErrorContextData + len next == (u8 *)p - 8 Added Reference https://git.kernel.org/stable/c/1b9331b16b0ed9414dcf7583d8134bdfeb117aae Added Reference https://git.kernel.org/stable/c/1cfa2d59f669db28d6292d10ff87ca6837c781b0 Added Reference https://git.kernel.org/stable/c/7d9a7f1f96cd617ee9e75bb22217c709038e26b8 Added Reference https://git.kernel.org/stable/c/97a05b0ae9ea5ec052be2eef0f9cc7ce03501bbb Added Reference https://git.kernel.org/stable/c/b41598bf54b3fe528994e573df6008f8f4d0a4f4 Added Reference https://git.kernel.org/stable/c/cd4b9b662f0fb9aa97ee6bf9034eca76fc6cab23