In the Linux kernel, the following vulnerability has been resolved:

ipv6: Fix out-of-bounds access in ipv6_find_tlv()

optlen is fetched without checking whether there is more than one byte to parse.
It can lead to out-of-bounds access.

Found by InfoTeCS on behalf of Linux Verification Center
(linuxtesting.org) with SVACE.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00047.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < 59e656d0d4a84ea0ee9a39c6f69160a3effccc94
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < 04bf69e3de435d793a203aacc4b774f8f9f2baeb
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < 011f47c8b8389154f996f5f69da8efc3a3beefef
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < e5f82688ae10f5f386952e65e941bb8868ee54dc
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < 9b92e2d0eb696d7586ba832c8854653b59887da0
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < 91dd8aab9c9f193210681b86b6b92840ffe74f0c
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < ae68c0f7edbc9a294094ce03a0aaf45aa489ce40
c61a404325093250b676f40ad8f4dd00f3bcab5f affected < 878ecb0897f4737a4c9401f3523fd49589025671
Linux Linux affected
Version Status Constraints
2.6.19 affected —
0 unaffected < 2.6.19
4.14.316 unaffected ≤ 4.14.*
4.19.284 unaffected ≤ 4.19.*
5.4.244 unaffected ≤ 5.4.*
5.10.181 unaffected ≤ 5.10.*
5.15.114 unaffected ≤ 5.15.*
6.1.31 unaffected ≤ 6.1.*
6.3.5 unaffected ≤ 6.3.*
6.4 unaffected ≤ *

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/011f47c8b8389154f996f5f69da8efc3a3beefef cve-icon cve-icon
https://git.kernel.org/stable/c/04bf69e3de435d793a203aacc4b774f8f9f2baeb cve-icon cve-icon
https://git.kernel.org/stable/c/59e656d0d4a84ea0ee9a39c6f69160a3effccc94 cve-icon cve-icon
https://git.kernel.org/stable/c/878ecb0897f4737a4c9401f3523fd49589025671 cve-icon cve-icon
https://git.kernel.org/stable/c/91dd8aab9c9f193210681b86b6b92840ffe74f0c cve-icon cve-icon
https://git.kernel.org/stable/c/9b92e2d0eb696d7586ba832c8854653b59887da0 cve-icon cve-icon
https://git.kernel.org/stable/c/ae68c0f7edbc9a294094ce03a0aaf45aa489ce40 cve-icon cve-icon
https://git.kernel.org/stable/c/e5f82688ae10f5f386952e65e941bb8868ee54dc cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025102212-CVE-2023-53705-38d9@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-53705 cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-53705 cve-icon
History

Thu, 23 Oct 2025 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Thu, 23 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Wed, 22 Oct 2025 13:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix out-of-bounds access in ipv6_find_tlv() optlen is fetched without checking whether there is more than one byte to parse. It can lead to out-of-bounds access. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.
Title ipv6: Fix out-of-bounds access in ipv6_find_tlv()
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-10-22T13:23:42.641Z

Reserved: 2025-10-22T13:21:37.346Z

Link: CVE-2023-53705

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-22T14:15:45.080

Modified: 2025-10-22T21:12:48.953

Link: CVE-2023-53705

cve-icon Redhat

Severity : Important

Publid Date: 2025-10-22T00:00:00Z

Links: CVE-2023-53705 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-10-23T10:05:11Z

Weaknesses

No weakness.