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

CVSS 8.8 · High EPSS 0.47% · P39

Possible ATT&CK Techniques 1AI

T1046 · Network Service Discovery

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux8f840e47f190cbe61a96945c13e9551048d42cef< b453e00da1211e997b82743d28af7714c59c05c8affected
8f840e47f190cbe61a96945c13e9551048d42cef< dfea32dd76f390e3155177b0038cc47b01386198affected
8f840e47f190cbe61a96945c13e9551048d42cef< 80f48523a0fe42db2e7375dff4e38a25c117090aaffected
8f840e47f190cbe61a96945c13e9551048d42cef< 546221b86ceeba0d8fec92d46a0604bb7b62be07affected
8f840e47f190cbe61a96945c13e9551048d42cef< 09e722030e8148ba4ed1e42c6b2ea57bda9f9895affected
8f840e47f190cbe61a96945c13e9551048d42cef< 4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0affected
8f840e47f190cbe61a96945c13e9551048d42cef< 6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75affected
8f840e47f190cbe61a96945c13e9551048d42cef< bd0e9289e2642f6a5c54faad304ce0f41e926d22affected
… +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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 8f840e47f190cbe61a96945c13e9551048d42cef ~ b453e00da1211e997b82743d28af7714c59c05c8 -
LinuxLinux 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 · 845 CVEs total

CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-720419.8 CRITICALespintcp: use sk_msg_free_partial to fix partial send
CVE-2026-724779.8 CRITICALfs/ntfs3: call _ntfs_bad_inode() when failing to rename
CVE-2026-722119.8 CRITICALntfs: grow index root value before reparent header update
CVE-2026-722099.8 CRITICALntfs: validate attribute values on lookup
CVE-2026-722089.8 CRITICALntfs: add bounds check before accessing EA entries
CVE-2026-722999.8 CRITICALtipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-744349.8 CRITICALrxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-744339.8 CRITICALrxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-724739.8 CRITICALxprtrdma: Decouple req recycling from RPC completion
CVE-2026-724729.8 CRITICALnfs: use nfsi->rwsem to protect traversal of the file lock list
CVE-2026-745459.8 CRITICALrtase: fix double free of multi-frag skb on DMA map failure
CVE-2026-723229.8 CRITICALipv6: mcast: Fix potential UAF in MLD delayed work

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-74469

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