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CVE-2025-40187— net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于空指针取消引用。

CVSS 7.5 · High EPSS 0.64% · P50

Possible ATT&CK Techniques 1 AI

T1053 · Scheduled Task/Job

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< 1014b83778c8677f1d7a57c26dc728baa801ac62 affected
30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< 7f702f85df0266ed7b5bab81ba50394c92f3c928 affected
30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< dbceedc0213e75bf3e9f9f9e2f66b10699d004fe affected
30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< 025419f4e216a3ae0d0cec622262e98e8078c447 affected
30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< c21f45cfa4a9526b34d76b397c9ef080668b6e73 affected
30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< d0e8f1445c19b1786759ba72a38267e1449bab7e affected
30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< badbd79313e6591616c1b78e29a9b71efed7f035 affected
30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b< 2f3119686ef50319490ccaec81a575973da98815 affected
… +10 more rows
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I. Basic Information for CVE-2025-40187

Vulnerability Information
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Vulnerability Title
net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce() If new_asoc->peer.adaptation_ind=0 and sctp_ulpevent_make_authkey=0 and sctp_ulpevent_make_authkey() returns 0, then the variable ai_ev remains zero and the zero will be dereferenced in the sctp_ulpevent_free() function.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于空指针取消引用。
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 30f6ebf65bc46161c5aaff1db2e6e7c76aa4a06b ~ 1014b83778c8677f1d7a57c26dc728baa801ac62 -
Linux Linux 4.17 -

II. Public POCs for CVE-2025-40187

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III. Intelligence Information for CVE-2025-40187

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Same Patch Batch · Linux · 2025-11-12 · 96 CVEs total

CVE-2025-40176 9.8 CRITICAL tls: wait for pending async decryptions if tls_strp_msg_hold fails
CVE-2025-40140 8.8 HIGH net: usb: Remove disruptive netif_wake_queue in rtl8150_set_multicast
CVE-2025-40133 8.1 HIGH mptcp: Use __sk_dst_get() and dst_dev_rcu() in mptcp_active_enable().
CVE-2025-40204 8.1 HIGH sctp: Fix MAC comparison to be constant-time
CVE-2025-40168 8.1 HIGH smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match().
CVE-2025-40158 8.1 HIGH ipv6: use RCU in ip6_output()
CVE-2025-40135 8.1 HIGH ipv6: use RCU in ip6_xmit()
CVE-2025-40186 8.1 HIGH tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request().
CVE-2025-40141 8.0 HIGH Bluetooth: ISO: Fix possible UAF on iso_conn_free
CVE-2025-40167 7.8 HIGH ext4: detect invalid INLINE_DATA + EXTENTS flag combination
CVE-2025-40159 7.8 HIGH xsk: Harden userspace-supplied xdp_desc validation
CVE-2025-40166 7.8 HIGH drm/xe/guc: Check GuC running state before deregistering exec queue
CVE-2025-40165 7.8 HIGH media: nxp: imx8-isi: m2m: Fix streaming cleanup on release
CVE-2025-40151 7.8 HIGH LoongArch: BPF: No support of struct argument in trampoline programs
CVE-2025-40149 7.8 HIGH tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().
CVE-2025-40172 7.8 HIGH accel/qaic: Treat remaining == 0 as error in find_and_map_user_pages()
CVE-2025-40169 7.8 HIGH bpf: Reject negative offsets for ALU ops
CVE-2025-40201 7.8 HIGH kernel/sys.c: fix the racy usage of task_lock(tsk->group_leader) in sys_prlimit64() paths
CVE-2025-40203 7.8 HIGH listmount: don't call path_put() under namespace semaphore
CVE-2025-40205 7.8 HIGH btrfs: avoid potential out-of-bounds in btrfs_encode_fh()

Showing top 20 of 96 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40187

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