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CVE-2025-38532— net: libwx: properly reset Rx ring descriptor

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，该漏洞源于未正确重置Rx环描述符，可能导致构建畸形SKB。

CVSS 7.8 · High EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1071 · Application Layer Protocol

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux 3c47e8ae113a68da47987750d9896e325d0aeedd< d510116c80b37efb100ce8d5ee326214b0157293 affected
3c47e8ae113a68da47987750d9896e325d0aeedd< 10e27b2a6ebeda49e9c2897a699d3ce1ded565ee affected
3c47e8ae113a68da47987750d9896e325d0aeedd< ee527d3fba4dae1d619d2d0438624002c8e99e24 affected
3c47e8ae113a68da47987750d9896e325d0aeedd< d992ed7e1b687ad7df0763d3e015a5358646210b affected
6.3 affected
< 6.3 unaffected
6.6.100≤ 6.6.* unaffected
6.12.40≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-38532

Vulnerability Information
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Vulnerability Title
net: libwx: properly reset Rx ring descriptor
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: libwx: properly reset Rx ring descriptor When device reset is triggered by feature changes such as toggling Rx VLAN offload, wx->do_reset() is called to reinitialize Rx rings. The hardware descriptor ring may retain stale values from previous sessions. And only set the length to 0 in rx_desc[0] would result in building malformed SKBs. Fix it to ensure a clean slate after device reset. [ 549.186435] [ C16] ------------[ cut here ]------------ [ 549.186457] [ C16] kernel BUG at net/core/skbuff.c:2814! [ 549.186468] [ C16] Oops: invalid opcode: 0000 [#1] SMP NOPTI [ 549.186472] [ C16] CPU: 16 UID: 0 PID: 0 Comm: swapper/16 Kdump: loaded Not tainted 6.16.0-rc4+ #23 PREEMPT(voluntary) [ 549.186476] [ C16] Hardware name: Micro-Star International Co., Ltd. MS-7E16/X670E GAMING PLUS WIFI (MS-7E16), BIOS 1.90 12/31/2024 [ 549.186478] [ C16] RIP: 0010:__pskb_pull_tail+0x3ff/0x510 [ 549.186484] [ C16] Code: 06 f0 ff 4f 34 74 7b 4d 8b 8c 24 c8 00 00 00 45 8b 84 24 c0 00 00 00 e9 c8 fd ff ff 48 c7 44 24 08 00 00 00 00 e9 5e fe ff ff <0f> 0b 31 c0 e9 23 90 5b ff 41 f7 c6 ff 0f 00 00 75 bf 49 8b 06 a8 [ 549.186487] [ C16] RSP: 0018:ffffb391c0640d70 EFLAGS: 00010282 [ 549.186490] [ C16] RAX: 00000000fffffff2 RBX: ffff8fe7e4d40200 RCX: 00000000fffffff2 [ 549.186492] [ C16] RDX: ffff8fe7c3a4bf8e RSI: 0000000000000180 RDI: ffff8fe7c3a4bf40 [ 549.186494] [ C16] RBP: ffffb391c0640da8 R08: ffff8fe7c3a4c0c0 R09: 000000000000000e [ 549.186496] [ C16] R10: ffffb391c0640d88 R11: 000000000000000e R12: ffff8fe7e4d40200 [ 549.186497] [ C16] R13: 00000000fffffff2 R14: ffff8fe7fa01a000 R15: 00000000fffffff2 [ 549.186499] [ C16] FS: 0000000000000000(0000) GS:ffff8fef5ae40000(0000) knlGS:0000000000000000 [ 549.186502] [ C16] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 549.186503] [ C16] CR2: 00007f77d81d6000 CR3: 000000051a032000 CR4: 0000000000750ef0 [ 549.186505] [ C16] PKRU: 55555554 [ 549.186507] [ C16] Call Trace: [ 549.186510] [ C16] <IRQ> [ 549.186513] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5 [ 549.186517] [ C16] __skb_pad+0xc7/0xf0 [ 549.186523] [ C16] wx_clean_rx_irq+0x355/0x3b0 [libwx] [ 549.186533] [ C16] wx_poll+0x92/0x120 [libwx] [ 549.186540] [ C16] __napi_poll+0x28/0x190 [ 549.186544] [ C16] net_rx_action+0x301/0x3f0 [ 549.186548] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5 [ 549.186551] [ C16] ? __raw_spin_lock_irqsave+0x1e/0x50 [ 549.186554] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5 [ 549.186557] [ C16] ? wake_up_nohz_cpu+0x35/0x160 [ 549.186559] [ C16] ? srso_alias_return_thunk+0x5/0xfbef5 [ 549.186563] [ C16] handle_softirqs+0xf9/0x2c0 [ 549.186568] [ C16] __irq_exit_rcu+0xc7/0x130 [ 549.186572] [ C16] common_interrupt+0xb8/0xd0 [ 549.186576] [ C16] </IRQ> [ 549.186577] [ C16] <TASK> [ 549.186579] [ C16] asm_common_interrupt+0x22/0x40 [ 549.186582] [ C16] RIP: 0010:cpuidle_enter_state+0xc2/0x420 [ 549.186585] [ C16] Code: 00 00 e8 11 0e 5e ff e8 ac f0 ff ff 49 89 c5 0f 1f 44 00 00 31 ff e8 0d ed 5c ff 45 84 ff 0f 85 40 02 00 00 fb 0f 1f 44 00 00 <45> 85 f6 0f 88 84 01 00 00 49 63 d6 48 8d 04 52 48 8d 04 82 49 8d [ 549.186587] [ C16] RSP: 0018:ffffb391c0277e78 EFLAGS: 00000246 [ 549.186590] [ C16] RAX: ffff8fef5ae40000 RBX: 0000000000000003 RCX: 0000000000000000 [ 549.186591] [ C16] RDX: 0000007fde0faac5 RSI: ffffffff826e53f6 RDI: ffffffff826fa9b3 [ 549.186593] [ C16] RBP: ffff8fe7c3a20800 R08: 0000000000000002 R09: 0000000000000000 [ 549.186595] [ C16] R10: 0000000000000000 R11: 000000000000ffff R12: ffffffff82ed7a40 [ 549.186596] [ C16] R13: 0000007fde0faac5 R14: 0000000000000003 R15: 0000000000000000 [ 549.186601] [ C16] ? cpuidle_enter_state+0xb3/0x420 [ 549.186605] [ C16] cpuidle_en ---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，该漏洞源于未正确重置Rx环描述符，可能导致构建畸形SKB。
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 3c47e8ae113a68da47987750d9896e325d0aeedd ~ d510116c80b37efb100ce8d5ee326214b0157293 -
Linux Linux 6.3 -

II. Public POCs for CVE-2025-38532

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III. Intelligence Information for CVE-2025-38532

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Same Patch Batch · Linux · 2025-08-16 · 59 CVEs total

CVE-2025-38533 9.8 CRITICAL net: libwx: fix the using of Rx buffer DMA
CVE-2025-38527 9.8 CRITICAL smb: client: fix use-after-free in cifs_oplock_break
CVE-2025-38552 9.4 CRITICAL mptcp: plug races between subflow fail and subflow creation
CVE-2023-3867 9.1 CRITICAL ksmbd: fix out of bounds read in smb2_sess_setup
CVE-2023-4515 9.1 CRITICAL ksmbd: validate command request size
CVE-2023-32249 9.1 CRITICAL ksmbd: not allow guest user on multichannel
CVE-2025-38512 8.8 HIGH wifi: prevent A-MSDU attacks in mesh networks
CVE-2025-38511 8.8 HIGH drm/xe/pf: Clear all LMTT pages on alloc
CVE-2023-4130 8.1 HIGH ksmbd: fix wrong next length validation of ea buffer in smb2_set_ea()
CVE-2023-3865 8.1 HIGH ksmbd: fix out-of-bound read in smb2_write
CVE-2025-38539 7.8 HIGH tracing: Add down_write(trace_event_sem) when adding trace event
CVE-2025-38550 7.8 HIGH ipv6: mcast: Delay put pmc->idev in mld_del_delrec()
CVE-2025-38542 7.8 HIGH net: appletalk: Fix device refcount leak in atrtr_create()
CVE-2025-38536 7.8 HIGH net: airoha: fix potential use-after-free in airoha_npu_get()
CVE-2025-38502 7.8 HIGH bpf: Fix oob access in cgroup local storage
CVE-2025-38523 7.5 HIGH cifs: Fix the smbd_response slab to allow usercopy
CVE-2025-38514 7.5 HIGH rxrpc: Fix oops due to non-existence of prealloc backlog struct
CVE-2025-38501 7.5 HIGH ksmbd: limit repeated connections from clients with the same IP
CVE-2025-38525 7.5 HIGH rxrpc: Fix irq-disabled in local_bh_enable()
CVE-2025-38524 7.5 HIGH rxrpc: Fix recv-recv race of completed call

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

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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