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CVE-2025-38179— smb: client: fix max_sge overflow in smb_extract_folioq_to_rdma()

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，该漏洞源于越界写入，可能导致内存损坏。

CVSS 7.8 · High EPSS 0.19% · P8 Updated Aug 05, 2026

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

Vendor	Product	Version Range	Status
Linux	Linux	`c45ebd636c32d33c75e51ce977520ff146bd41a1< 8ae7814589d7bd850294ac14ec4c1725dafd42ca`	affected
		`c45ebd636c32d33c75e51ce977520ff146bd41a1< e0ba9b2f188166550296005e64b15e80db82ad8a`	affected
		`c45ebd636c32d33c75e51ce977520ff146bd41a1< a379a8a2a0032e12e7ef397197c9c2ad011588d6`	affected
		`6.12`	affected
		`< 6.12`	unaffected
		`6.12.35≤ 6.12.*`	unaffected
		`6.15.4≤ 6.15.*`	unaffected
		`6.16≤ *`	unaffected

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I. Basic Information for CVE-2025-38179

Vulnerability Information

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Vulnerability Title

smb: client: fix max_sge overflow in smb_extract_folioq_to_rdma()

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix max_sge overflow in smb_extract_folioq_to_rdma() This fixes the following problem: [ 749.901015] [ T8673] run fstests cifs/001 at 2025-06-17 09:40:30 [ 750.346409] [ T9870] ================================================================== [ 750.346814] [ T9870] BUG: KASAN: slab-out-of-bounds in smb_set_sge+0x2cc/0x3b0 [cifs] [ 750.347330] [ T9870] Write of size 8 at addr ffff888011082890 by task xfs_io/9870 [ 750.347705] [ T9870] [ 750.348077] [ T9870] CPU: 0 UID: 0 PID: 9870 Comm: xfs_io Kdump: loaded Not tainted 6.16.0-rc2-metze.02+ #1 PREEMPT(voluntary) [ 750.348082] [ T9870] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 750.348085] [ T9870] Call Trace: [ 750.348086] [ T9870] <TASK> [ 750.348088] [ T9870] dump_stack_lvl+0x76/0xa0 [ 750.348106] [ T9870] print_report+0xd1/0x640 [ 750.348116] [ T9870] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 750.348120] [ T9870] ? kasan_complete_mode_report_info+0x26/0x210 [ 750.348124] [ T9870] kasan_report+0xe7/0x130 [ 750.348128] [ T9870] ? smb_set_sge+0x2cc/0x3b0 [cifs] [ 750.348262] [ T9870] ? smb_set_sge+0x2cc/0x3b0 [cifs] [ 750.348377] [ T9870] __asan_report_store8_noabort+0x17/0x30 [ 750.348381] [ T9870] smb_set_sge+0x2cc/0x3b0 [cifs] [ 750.348496] [ T9870] smbd_post_send_iter+0x1990/0x3070 [cifs] [ 750.348625] [ T9870] ? __pfx_smbd_post_send_iter+0x10/0x10 [cifs] [ 750.348741] [ T9870] ? update_stack_state+0x2a0/0x670 [ 750.348749] [ T9870] ? cifs_flush+0x153/0x320 [cifs] [ 750.348870] [ T9870] ? cifs_flush+0x153/0x320 [cifs] [ 750.348990] [ T9870] ? update_stack_state+0x2a0/0x670 [ 750.348995] [ T9870] smbd_send+0x58c/0x9c0 [cifs] [ 750.349117] [ T9870] ? __pfx_smbd_send+0x10/0x10 [cifs] [ 750.349231] [ T9870] ? unwind_get_return_address+0x65/0xb0 [ 750.349235] [ T9870] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 750.349242] [ T9870] ? arch_stack_walk+0xa7/0x100 [ 750.349250] [ T9870] ? stack_trace_save+0x92/0xd0 [ 750.349254] [ T9870] __smb_send_rqst+0x931/0xec0 [cifs] [ 750.349374] [ T9870] ? kernel_text_address+0x173/0x190 [ 750.349379] [ T9870] ? kasan_save_stack+0x39/0x70 [ 750.349382] [ T9870] ? kasan_save_track+0x18/0x70 [ 750.349385] [ T9870] ? __kasan_slab_alloc+0x9d/0xa0 [ 750.349389] [ T9870] ? __pfx___smb_send_rqst+0x10/0x10 [cifs] [ 750.349508] [ T9870] ? smb2_mid_entry_alloc+0xb4/0x7e0 [cifs] [ 750.349626] [ T9870] ? cifs_call_async+0x277/0xb00 [cifs] [ 750.349746] [ T9870] ? cifs_issue_write+0x256/0x610 [cifs] [ 750.349867] [ T9870] ? netfs_do_issue_write+0xc2/0x340 [netfs] [ 750.349900] [ T9870] ? netfs_advance_write+0x45b/0x1270 [netfs] [ 750.349929] [ T9870] ? netfs_write_folio+0xd6c/0x1be0 [netfs] [ 750.349958] [ T9870] ? netfs_writepages+0x2e9/0xa80 [netfs] [ 750.349987] [ T9870] ? do_writepages+0x21f/0x590 [ 750.349993] [ T9870] ? filemap_fdatawrite_wbc+0xe1/0x140 [ 750.349997] [ T9870] ? entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 750.350002] [ T9870] smb_send_rqst+0x22e/0x2f0 [cifs] [ 750.350131] [ T9870] ? __pfx_smb_send_rqst+0x10/0x10 [cifs] [ 750.350255] [ T9870] ? local_clock_noinstr+0xe/0xd0 [ 750.350261] [ T9870] ? kasan_save_alloc_info+0x37/0x60 [ 750.350268] [ T9870] ? __kasan_check_write+0x14/0x30 [ 750.350271] [ T9870] ? _raw_spin_lock+0x81/0xf0 [ 750.350275] [ T9870] ? __pfx__raw_spin_lock+0x10/0x10 [ 750.350278] [ T9870] ? smb2_setup_async_request+0x293/0x580 [cifs] [ 750.350398] [ T9870] cifs_call_async+0x477/0xb00 [cifs] [ 750.350518] [ T9870] ? __pfx_smb2_writev_callback+0x10/0x10 [cifs] [ 750.350636] [ T9870] ? __pfx_cifs_call_async+0x10/0x10 [cifs] [ 750.350756] [ T9870] ? __pfx__raw_spin_lock+0x10/0x10 [ 750.350760] [ T9870] ? __kasan_check_write+0x14/0x30 [ 750.350763] [ T98 ---truncated---

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/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，该漏洞源于越界写入，可能导致内存损坏。

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	c45ebd636c32d33c75e51ce977520ff146bd41a1 ~ 8ae7814589d7bd850294ac14ec4c1725dafd42ca	-
Linux	Linux	6.12	-

II. Public POCs for CVE-2025-38179

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2025-38179

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https://www.cve.org/CVERecord?id=CVE-2025-38179

Same Patch Batch · Linux · 2025-07-04 · 59 CVEs total

CVE-2025-38209	9.8 CRITICAL	nvme-tcp: remove tag set when second admin queue config fails
CVE-2025-38211	9.8 CRITICAL	RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction
CVE-2025-38174	8.8 HIGH	thunderbolt: Do not double dequeue a configuration request
CVE-2025-38216	8.8 HIGH	iommu/vt-d: Restore context entry setup order for aliased devices
CVE-2025-38233	7.8 HIGH	powerpc64/ftrace: fix clobbered r15 during livepatching
CVE-2025-38230	7.8 HIGH	jfs: validate AG parameters in dbMount() to prevent crashes
CVE-2025-38227	7.8 HIGH	media: vidtv: Terminating the subsequent process of initialization failure
CVE-2025-38226	7.8 HIGH	media: vivid: Change the siize of the composing
CVE-2025-38224	7.8 HIGH	can: kvaser_pciefd: refine error prone echo_skb_max handling logic
CVE-2025-38218	7.8 HIGH	f2fs: fix to do sanity check on sit_bitmap_size
CVE-2025-38232	7.8 HIGH	NFSD: fix race between nfsd registration and exports_proc
CVE-2025-38212	7.8 HIGH	ipc: fix to protect IPCS lookups using RCU
CVE-2025-38175	7.8 HIGH	binder: fix yet another UAF in binder_devices
CVE-2025-38234	7.8 HIGH	sched/rt: Fix race in push_rt_task
CVE-2025-38206	7.8 HIGH	exfat: fix double free in delayed_free
CVE-2025-38204	7.8 HIGH	jfs: fix array-index-out-of-bounds read in add_missing_indices
CVE-2025-38192	7.8 HIGH	net: clear the dst when changing skb protocol
CVE-2025-38189	7.8 HIGH	drm/v3d: Avoid NULL pointer dereference in `v3d_job_update_stats()`
CVE-2025-38187	7.8 HIGH	drm/nouveau: fix a use-after-free in r535_gsp_rpc_push()
CVE-2025-38193	7.8 HIGH	net_sched: sch_sfq: reject invalid perturb period

Showing top 20 of 59 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux

V. Comments for CVE-2025-38179

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

CVE-2025-38179— smb: client: fix max_sge overflow in smb_extract_folioq_to_rdma()

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 8

I. Basic Information for CVE-2025-38179

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2025-38179

III. Intelligence Information for CVE-2025-38179

Same Patch Batch · Linux · 2025-07-04 · 59 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2025-38179

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