CVE-2026-52917 Details
Description
In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associations in dump_one path The SCTP exact sock_diag lookup can hold a transport reference, block on lock_sock(sk), and then resume after sctp_association_free() has marked the association dead and freed its bind address list. When that happens, inet_assoc_attr_size() and inet_diag_msg_sctpasoc_fill() can still dereference association state that is no longer valid for reporting. In particular, inet_diag_msg_sctpasoc_fill() may read an empty bind-address list as a real sctp_sockaddr_entry and trigger an out-of-bounds read from unrelated association memory. Reject the association after taking the socket lock if it has been reaped or detached from the endpoint, and report the lookup as stale. This keeps the exact dump-one path from formatting torn association state.
A vulnerability in the Linux kernel's handling of SCTP (Stream Control Transmission Protocol) socket diagnostics can lead to an out-of-bounds read from memory. This issue arises because the socket diagnostic lookup can retain a reference to a transport, block while holding a socket lock, and then continue after the associated SCTP resources have been freed. When this occurs, the diagnostic functions can access invalid association data, particularly if an empty bind-address list is misinterpreted as a valid entry, causing a read from unrelated memory. The vulnerability affects the Linux kernel stable group.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been addressed. Instructions for upgrading the kernel can be found in the official Linux kernel documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/480f754580b5686b928977d16a59f20cef83ff01 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5425de8bd6e9fe5bd67d158e3348171ae7510117 | kernel.org | Patch |
| https://git.kernel.org/stable/c/5eba3e48d78edd7551b992cb7ba687019b3a78da | kernel.org | Patch |
| https://git.kernel.org/stable/c/6657af827e21883ae90693e42e7f59a6aab690b5 | kernel.org | Patch |
| https://git.kernel.org/stable/c/78c4f964b2f94e405721c093773f6250e1e676b2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b2be72d401833194917e44fbd8d8144bb4f2db16 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e97c2a535e23ed0fdd2660993fb3f10d9535c9bc | kernel.org | Patch |
| https://git.kernel.org/stable/c/f5af203dec6e0e7a6090fcc2130e9f3901bfc84d | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.7, < 5.10.259 >= 5.11, < 5.15.210 >= 5.16, < 6.1.176 >= 6.2, < 6.6.143 >= 6.7, < 6.12.94 >= 6.13, < 6.18.36 >= 6.19, < 7.0.13 7.1 rc1 7.1 rc2 7.1 rc3 7.1 rc4 7.1 rc5 7.1 rc6 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 8, 2026 | Initial Analysis | [email protected] |
| Jun 28, 2026 | CVE Modified | kernel.org |
| Jun 24, 2026 | New CVE Received | kernel.org |