CVE-2026-52917
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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that happens, inet_assoc_attr_size() and inet_diag_msg_sctpasoc_fill() can still dereference association state that is no longer valid for reporting.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.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.13% probability · 2th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-125, CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/480f754580b5686b928977d16a59f20cef83ff01Patch
- https://git.kernel.org/stable/c/5425de8bd6e9fe5bd67d158e3348171ae7510117Patch
- https://git.kernel.org/stable/c/5eba3e48d78edd7551b992cb7ba687019b3a78daPatch
- https://git.kernel.org/stable/c/6657af827e21883ae90693e42e7f59a6aab690b5Patch
- https://git.kernel.org/stable/c/78c4f964b2f94e405721c093773f6250e1e676b2Patch
- https://git.kernel.org/stable/c/b2be72d401833194917e44fbd8d8144bb4f2db16Patch
- https://git.kernel.org/stable/c/e97c2a535e23ed0fdd2660993fb3f10d9535c9bcPatch
- https://git.kernel.org/stable/c/f5af203dec6e0e7a6090fcc2130e9f3901bfc84dPatch
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.