CVE-2025-23142: sctp: detect and prevent references to a freed transport in sendmsg

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• debian debian linux11.0
• linux linux kernel4.4.166 and later · before 4.5
• linux linux kernel4.9.142 and later · before 4.10
• linux linux kernel4.14.85 and later · before 4.15
• linux linux kernel4.19.6 and later · before 5.4.293
• linux linux kernel5.5 and later · before 5.10.237
• linux linux kernel5.11 and later · before 5.15.181
• linux linux kernel3.18.128 and later · before 3.19
• linux linux kernel6.2 and later · before 6.6.88
• linux linux kernel6.7 and later · before 6.12.24
• linux linux kernel6.13 and later · before 6.13.12
• linux linux kernel6.14 and later · before 6.14.3
• linux linux kernel5.16 and later · before 6.1.135
• linux linux kernel6.15

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 26e51e5287eed4d96ea66a3da95429f42940f013, 8b97e045bd6d37f96f161e4d371ae174148e1587, e044554e97e812eb257d073bcc130e0ea653858f, 8376fdc999be008f0e9918db52f1ed8c08f5a1c9, cd947138e8c31e8cfcd489c12e9b97271beb6e79, 4.20affected
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before 547762250220325d350d0917a7231480e0f4142baffected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before 3257386be6a7eb8a8bfc9cbfb746df4eb4fc70e8affected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before 0f7df4899299ce4662e5f95badb9dbc57cc37fa5affected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before 7a63f4fb0efb4e69efd990cbb740a848679ec4b0affected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before c6fefcb71d246baaf3bacdad1af7ff50ebcfe652affected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before 9e7c37fadb3be1fc33073fcf10aa96d166caa697affected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before 5bc83bdf5f5b8010d1ca5a4555537e62413ab4e2affected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before 2e5068b7e0ae0a54f6cfd03a2f80977da657f1eeaffected · git
  • df132eff463873e14e019a07f387b4d577d6d1f9 and later · before f1a69a940de58b16e8249dff26f74c8cc59b32beaffected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2022-49931May 1, 2025 · IB/hfi1: Correctly move list in sc_disable()
  22Monitor
• ← EarlierCVE-2025-23141May 1, 2025 · KVM: x86: Acquire SRCU in KVM_GET_MP_STATE to protect guest memory accesses
  22Monitor
• Later →CVE-2025-23143May 1, 2025 · net: Fix null-ptr-deref by sock_lock_init_class_and_name() and rmmod.
  22Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.