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CVE-2026-74469— sctp: prevent peer transport count overflow

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 4.7版本存在安全漏洞，该漏洞源于sctp_assoc_add_peer()函数对16位transport_count计数溢出，可能导致诊断转储时越界写入。

CVSS 8.8 · High EPSS 1.47% · P73

Possible ATT&CK Techniques 1 AI

T1046 · Network Service Discovery

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8f840e47f190cbe61a96945c13e9551048d42cef< b453e00da1211e997b82743d28af7714c59c05c8 affected
8f840e47f190cbe61a96945c13e9551048d42cef< dfea32dd76f390e3155177b0038cc47b01386198 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 80f48523a0fe42db2e7375dff4e38a25c117090a affected
8f840e47f190cbe61a96945c13e9551048d42cef< 546221b86ceeba0d8fec92d46a0604bb7b62be07 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 09e722030e8148ba4ed1e42c6b2ea57bda9f9895 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0 affected
8f840e47f190cbe61a96945c13e9551048d42cef< 6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75 affected
8f840e47f190cbe61a96945c13e9551048d42cef< bd0e9289e2642f6a5c54faad304ce0f41e926d22 affected
… +10 more rows
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I. Basic Information for CVE-2026-74469

Vulnerability Information
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Vulnerability Title
sctp: prevent peer transport count overflow
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sctp: prevent peer transport count overflow sctp_assoc_add_peer() increments the association's 16-bit transport_count for every new unique peer. Adding the 65,536th transport wraps the count to zero. SCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload, then copies one sockaddr_storage for every entry in transport_addr_list. After the wrap, a diagnostic dump reserves an empty payload and writes 8 MiB of peer addresses past the skb tail. Reject a new unique peer when transport_count has reached U16_MAX. Perform the check after the existing-peer lookup so a duplicate address continues to return its existing transport at the limit.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 4.7版本存在安全漏洞，该漏洞源于sctp_assoc_add_peer()函数对16位transport_count计数溢出，可能导致诊断转储时越界写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8f840e47f190cbe61a96945c13e9551048d42cef ~ b453e00da1211e997b82743d28af7714c59c05c8 -
Linux Linux 4.7 -

II. Public POCs for CVE-2026-74469

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III. Intelligence Information for CVE-2026-74469

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Patches & Fixes for CVE-2026-74469 (7)

Same Patch Batch · Linux · 2026-08-15 · 844 CVEs total

CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72046 9.8 CRITICAL gve: fix header buffer corruption with header-split and HW-GRO
CVE-2026-74376 9.8 CRITICAL md/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-72217 9.8 CRITICAL SUNRPC: Bound-check xdr_buf_to_bvec() stores before writing
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-74267 9.8 CRITICAL net/sched: sch_codel: Do not call qdisc_tree_reduce_backlog during peek before restoring q
CVE-2026-72206 9.8 CRITICAL ntfs: validate index block header more strictly
CVE-2026-72207 9.8 CRITICAL ntfs: not change 0-byte $DATA attribute to non-resident

Showing top 20 of 844 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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