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

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2025-40281— sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto

EPSS 0.06% · P17
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2025-40281

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto syzbot reported a possible shift-out-of-bounds [1] Blamed commit added rto_alpha_max and rto_beta_max set to 1000. It is unclear if some sctp users are setting very large rto_alpha and/or rto_beta. In order to prevent user regression, perform the test at run time. Also add READ_ONCE() annotations as sysctl values can change under us. [1] UBSAN: shift-out-of-bounds in net/sctp/transport.c:509:41 shift exponent 64 is too large for 32-bit type 'unsigned int' CPU: 0 UID: 0 PID: 16704 Comm: syz.2.2320 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:233 [inline] __ubsan_handle_shift_out_of_bounds+0x27f/0x420 lib/ubsan.c:494 sctp_transport_update_rto.cold+0x1c/0x34b net/sctp/transport.c:509 sctp_check_transmitted+0x11c4/0x1c30 net/sctp/outqueue.c:1502 sctp_outq_sack+0x4ef/0x1b20 net/sctp/outqueue.c:1338 sctp_cmd_process_sack net/sctp/sm_sideeffect.c:840 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1372 [inline]
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sctp未正确处理rto_alpha和rto_beta值，可能导致移位越界。
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 b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b ~ 0e0413e3315199b23ff4aec295e256034cd0a6e4 -
LinuxLinux 3.16 -

II. Public POCs for CVE-2025-40281

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2025-40281

请登录查看更多情报信息。

Same Patch Batch · Linux · 2025-12-06 · 23 CVEs total

CVE-2025-40277drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE
CVE-2025-40267io_uring/rw: ensure allocated iovec gets cleared for early failure
CVE-2025-40268cifs: client: fix memory leak in smb3_fs_context_parse_param
CVE-2025-40269ALSA: usb-audio: Fix potential overflow of PCM transfer buffer
CVE-2025-40270mm, swap: fix potential UAF issue for VMA readahead
CVE-2025-40271fs/proc: fix uaf in proc_readdir_de()
CVE-2025-40272mm/secretmem: fix use-after-free race in fault handler
CVE-2025-40273NFSD: free copynotify stateid in nfs4_free_ol_stateid()
CVE-2025-40274KVM: guest_memfd: Remove bindings on memslot deletion when gmem is dying
CVE-2025-40275ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd
CVE-2025-40276drm/panthor: Flush shmem writes before mapping buffers CPU-uncached
CVE-2025-40289drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM
CVE-2025-40278net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak
CVE-2025-40279net: sched: act_connmark: initialize struct tc_ife to fix kernel leak
CVE-2025-40280tipc: Fix use-after-free in tipc_mon_reinit_self().
CVE-2025-40282Bluetooth: 6lowpan: reset link-local header on ipv6 recv path
CVE-2025-40283Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF
CVE-2025-40284Bluetooth: MGMT: cancel mesh send timer when hdev removed
CVE-2025-40285smb/server: fix possible refcount leak in smb2_sess_setup()
CVE-2025-40286smb/server: fix possible memory leak in smb2_read()

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40281

No comments yet

Leave a comment