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CVE-2026-52917— sctp: diag: reject stale associations in dump_one path

CVSS 7.1 · High EPSS 0.13% · P3

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux8f840e47f190cbe61a96945c13e9551048d42cef< 6657af827e21883ae90693e42e7f59a6aab690b5affected
8f840e47f190cbe61a96945c13e9551048d42cef< b2be72d401833194917e44fbd8d8144bb4f2db16affected
8f840e47f190cbe61a96945c13e9551048d42cef< 5425de8bd6e9fe5bd67d158e3348171ae7510117affected
8f840e47f190cbe61a96945c13e9551048d42cef< e97c2a535e23ed0fdd2660993fb3f10d9535c9bcaffected
8f840e47f190cbe61a96945c13e9551048d42cef< 480f754580b5686b928977d16a59f20cef83ff01affected
8f840e47f190cbe61a96945c13e9551048d42cef< 78c4f964b2f94e405721c093773f6250e1e676b2affected
8f840e47f190cbe61a96945c13e9551048d42cef< f5af203dec6e0e7a6090fcc2130e9f3901bfc84daffected
8f840e47f190cbe61a96945c13e9551048d42cef< 5eba3e48d78edd7551b992cb7ba687019b3a78daaffected
… +10 more rows
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I. Basic Information for CVE-2026-52917

Vulnerability Information
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Vulnerability Title
sctp: diag: reject stale associations in dump_one path
Source: NVD (National Vulnerability Database)
Vulnerability 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that happens, inet_assoc_attr_size() and inet_diag_msg_sctpasoc_fill() can still dereference association state that is no longer valid for reporting.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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 4.7版本及之前版本存在越界读漏洞，该漏洞源于sctp diag中dump_one路径存在无效关联状态处理问题，可能导致越界读取。
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 ~ 6657af827e21883ae90693e42e7f59a6aab690b5 -
LinuxLinux 4.7 -

II. Public POCs for CVE-2026-52917

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III. Intelligence Information for CVE-2026-52917

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Patches & Fixes for CVE-2026-52917 (8)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-530469.8 CRITICALksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-530889.8 CRITICALnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-530109.8 CRITICALksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-530069.8 CRITICALipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-530869.8 CRITICALnet: bcmgenet: fix racing timeout handler
CVE-2026-530029.8 CRITICALnetfilter: conntrack: remove sprintf usage
CVE-2026-529939.8 CRITICALtipc: fix double-free in tipc_buf_append()
CVE-2026-529899.8 CRITICALnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-529869.8 CRITICALnetfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-529829.8 CRITICALnet: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-530459.8 CRITICALmemory: tegra124-emc: Fix dll_change check
CVE-2026-529559.8 CRITICALlibceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-530499.8 CRITICALgfs2: add some missing log locking
CVE-2026-529149.8 CRITICALbatman-adv: fix fragment reassembly length accounting
CVE-2026-529319.8 CRITICALbatman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-529249.8 CRITICALsctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-530559.8 CRITICALcrypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-530439.1 CRITICALocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-529999.1 CRITICALnetfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-529589.1 CRITICALlibceph: Fix potential out-of-bounds access in osdmap_decode()

Showing top 20 of 219 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-52917

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