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CVE-2025-22103— net: fix NULL pointer dereference in l3mdev_l3_rcv

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l3mdev_l3_rcv函数在ipvlan_l3s_unregister后访问dev->l3mdev_ops导致空指针取消引用。

AI Predicted 4.7 Difficulty: Hard EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux c675e06a98a474f7ad0af32ce467613da818da52< 1da52878f7fb74ace304f74325bb89e3e5546b55 affected
c675e06a98a474f7ad0af32ce467613da818da52< d97d6b1bd2b7f2a188d261d44c4519a13b8c406a affected
c675e06a98a474f7ad0af32ce467613da818da52< 8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862 affected
c675e06a98a474f7ad0af32ce467613da818da52< 52b44d8c653459c658b733d13658afdde45f6836 affected
c675e06a98a474f7ad0af32ce467613da818da52< 59599bce44af3df7a215ebc81cb166426e1c9204 affected
c675e06a98a474f7ad0af32ce467613da818da52< f9dff65140efc289f01bcf39c3ca66a8806b6132 affected
c675e06a98a474f7ad0af32ce467613da818da52< 0032c99e83b9ce6d5995d65900aa4b6ffb501cce affected
5.1 affected
… +8 more rows
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I. Basic Information for CVE-2025-22103

Vulnerability Information
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Vulnerability Title
net: fix NULL pointer dereference in l3mdev_l3_rcv
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: fix NULL pointer dereference in l3mdev_l3_rcv When delete l3s ipvlan: ip link del link eth0 ipvlan1 type ipvlan mode l3s This may cause a null pointer dereference: Call trace: ip_rcv_finish+0x48/0xd0 ip_rcv+0x5c/0x100 __netif_receive_skb_one_core+0x64/0xb0 __netif_receive_skb+0x20/0x80 process_backlog+0xb4/0x204 napi_poll+0xe8/0x294 net_rx_action+0xd8/0x22c __do_softirq+0x12c/0x354 This is because l3mdev_l3_rcv() visit dev->l3mdev_ops after ipvlan_l3s_unregister() assign the dev->l3mdev_ops to NULL. The process like this: (CPU1) | (CPU2) l3mdev_l3_rcv() | check dev->priv_flags: | master = skb->dev; | | | ipvlan_l3s_unregister() | set dev->priv_flags | dev->l3mdev_ops = NULL; | visit master->l3mdev_ops | To avoid this by do not set dev->l3mdev_ops when unregister l3s ipvlan.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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l3mdev_l3_rcv函数在ipvlan_l3s_unregister后访问dev->l3mdev_ops导致空指针取消引用。
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 c675e06a98a474f7ad0af32ce467613da818da52 ~ 1da52878f7fb74ace304f74325bb89e3e5546b55 -
Linux Linux 5.1 -

II. Public POCs for CVE-2025-22103

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III. Intelligence Information for CVE-2025-22103

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Patches & Fixes for CVE-2025-22103 (3)

Other References for CVE-2025-22103 (2)

Same Patch Batch · Linux · 2025-04-16 · 127 CVEs total

CVE-2025-22021 10.0 CRITICAL netfilter: socket: Lookup orig tuple for IPv6 SNAT
CVE-2025-22110 9.8 CRITICAL netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error
CVE-2025-22077 9.8 CRITICAL Revert "smb: client: fix TCP timers deadlock after rmmod"
CVE-2025-22088 9.8 CRITICAL RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()
CVE-2025-22074 8.8 HIGH ksmbd: fix r_count dec/increment mismatch
CVE-2025-23133 8.8 HIGH wifi: ath11k: update channel list in reg notifier instead reg worker
CVE-2025-22118 8.8 HIGH ice: validate queue quanta parameters to prevent OOB access
CVE-2025-22086 8.8 HIGH RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow
CVE-2025-22040 8.8 HIGH ksmbd: fix session use-after-free in multichannel connection
CVE-2025-22041 8.8 HIGH ksmbd: fix use-after-free in ksmbd_sessions_deregister()
CVE-2025-22039 8.8 HIGH ksmbd: fix overflow in dacloffset bounds check
CVE-2024-58096 8.8 HIGH wifi: ath11k: add srng->lock for ath11k_hal_srng_* in monitor mode
CVE-2025-22117 8.7 HIGH ice: fix using untrusted value of pkt_len in ice_vc_fdir_parse_raw()
CVE-2025-22108 8.6 HIGH bnxt_en: Mask the bd_cnt field in the TX BD properly
CVE-2025-22121 8.4 HIGH ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
CVE-2025-22080 8.4 HIGH fs/ntfs3: Prevent integer overflow in hdr_first_de()
CVE-2025-22038 8.3 HIGH ksmbd: validate zero num_subauth before sub_auth is accessed
CVE-2025-22043 8.1 HIGH ksmbd: add bounds check for durable handle context
CVE-2025-22042 8.1 HIGH ksmbd: add bounds check for create lease context
CVE-2025-22049 7.8 HIGH LoongArch: Increase ARCH_DMA_MINALIGN up to 16

Showing top 20 of 127 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-22103

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