Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1020 CNY

100%
Buy Us a Coffee

CVE-2025-23145— mptcp: fix NULL pointer in can_accept_new_subflow

EPSS 0.07% · P20

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux9466a1ccebbe54ac57fb8a89c2b4b854826546a8< 8cf7fef1bb2ffea7792bcbf71ca00216cecc725daffected
9466a1ccebbe54ac57fb8a89c2b4b854826546a8< b3088bd2a6790c8efff139d86d7a9d0b1305977baffected
9466a1ccebbe54ac57fb8a89c2b4b854826546a8< 855bf0aacd51fced11ea9aa0d5101ee0febaeadbaffected
9466a1ccebbe54ac57fb8a89c2b4b854826546a8< 7f9ae060ed64aef8f174c5f1ea513825b1be9af1affected
9466a1ccebbe54ac57fb8a89c2b4b854826546a8< dc81e41a307df523072186b241fa8244fecd7803affected
9466a1ccebbe54ac57fb8a89c2b4b854826546a8< efd58a8dd9e7a709a90ee486a4247c923d27296faffected
9466a1ccebbe54ac57fb8a89c2b4b854826546a8< 4b2649b9717678aeb097893cc49f59311a1ecab0affected
9466a1ccebbe54ac57fb8a89c2b4b854826546a8< 443041deb5ef6a1289a99ed95015ec7442f141dcaffected
… +10 more rows
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2025-23145

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
mptcp: fix NULL pointer in can_accept_new_subflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix NULL pointer in can_accept_new_subflow When testing valkey benchmark tool with MPTCP, the kernel panics in 'mptcp_can_accept_new_subflow' because subflow_req->msk is NULL. Call trace: mptcp_can_accept_new_subflow (./net/mptcp/subflow.c:63 (discriminator 4)) (P) subflow_syn_recv_sock (./net/mptcp/subflow.c:854) tcp_check_req (./net/ipv4/tcp_minisocks.c:863) tcp_v4_rcv (./net/ipv4/tcp_ipv4.c:2268) ip_protocol_deliver_rcu (./net/ipv4/ip_input.c:207) ip_local_deliver_finish (./net/ipv4/ip_input.c:234) ip_local_deliver (./net/ipv4/ip_input.c:254) ip_rcv_finish (./net/ipv4/ip_input.c:449) ... According to the debug log, the same req received two SYN-ACK in a very short time, very likely because the client retransmits the syn ack due to multiple reasons. Even if the packets are transmitted with a relevant time interval, they can be processed by the server on different CPUs concurrently). The 'subflow_req->msk' ownership is transferred to the subflow the first, and there will be a risk of a null pointer dereference here. This patch fixes this issue by moving the 'subflow_req->msk' under the `own_req == true` conditional. Note that the !msk check in subflow_hmac_valid() can be dropped, because the same check already exists under the own_req mpj branch where the code has been moved to.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
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mptcp_can_accept_new_subflow中的空指针引用，可能导致内核崩溃。
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 9466a1ccebbe54ac57fb8a89c2b4b854826546a8 ~ 8cf7fef1bb2ffea7792bcbf71ca00216cecc725d -
LinuxLinux 5.9 -

II. Public POCs for CVE-2025-23145

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-23145

请登录查看更多情报信息。
Patch · 8

Same Patch Batch · Linux · 2025-05-01 · 245 CVEs total

CVE-2022-49854mctp: Fix an error handling path in mctp_init()
CVE-2022-49837bpf: Fix memory leaks in __check_func_call
CVE-2022-49838sctp: clear out_curr if all frag chunks of current msg are pruned
CVE-2022-49840bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb()
CVE-2022-49839scsi: scsi_transport_sas: Fix error handling in sas_phy_add()
CVE-2022-49841serial: imx: Add missing .thaw_noirq hook
CVE-2022-49842ASoC: core: Fix use-after-free in snd_soc_exit()
CVE-2022-49844can: dev: fix skb drop check
CVE-2022-49845can: j1939: j1939_send_one(): fix missing CAN header initialization
CVE-2022-49846udf: Fix a slab-out-of-bounds write bug in udf_find_entry()
CVE-2022-49847net: ethernet: ti: am65-cpsw: Fix segmentation fault at module unload
CVE-2022-49849btrfs: fix match incorrectly in dev_args_match_device
CVE-2022-49848phy: qcom-qmp-combo: fix NULL-deref on runtime resume
CVE-2022-49850nilfs2: fix deadlock in nilfs_count_free_blocks()
CVE-2022-49851riscv: fix reserved memory setup
CVE-2022-49852riscv: process: fix kernel info leakage
CVE-2022-49862tipc: fix the msg->req tlv len check in tipc_nl_compat_name_table_dump_header
CVE-2022-49864drm/amdkfd: Fix NULL pointer dereference in svm_migrate_to_ram()
CVE-2022-49865ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network
CVE-2022-49863can: af_can: fix NULL pointer dereference in can_rx_register()

Showing top 20 of 245 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-23145

No comments yet

Leave a comment