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CVE-2025-39875— igb: Fix NULL pointer dereference in ethtool loopback test

EPSS 0.02% · P6

Affected Version Matrix 6

VendorProductVersion RangeStatus
LinuxLinux2c6196013f84651772388a86dfd4bb033d0c0d45< 473be7d39efd3be383e9c0c8e44b53508b4ffeb5affected
2c6196013f84651772388a86dfd4bb033d0c0d45< 75871a525a596ff4d16c4aebc0018f8d0923c9b1affected
6.14affected
< 6.14unaffected
6.16.8≤ 6.16.*unaffected
6.17≤ *unaffected
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I. Basic Information for CVE-2025-39875

Vulnerability Information
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Vulnerability Title
igb: Fix NULL pointer dereference in ethtool loopback test
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: igb: Fix NULL pointer dereference in ethtool loopback test The igb driver currently causes a NULL pointer dereference when executing the ethtool loopback test. This occurs because there is no associated q_vector for the test ring when it is set up, as interrupts are typically not added to the test rings. Since commit 5ef44b3cb43b removed the napi_id assignment in __xdp_rxq_info_reg(), there is no longer a need to pass a napi_id to it. Therefore, simply use 0 as the last parameter.
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，该漏洞源于未正确处理测试环的q_vector，可能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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 2c6196013f84651772388a86dfd4bb033d0c0d45 ~ 473be7d39efd3be383e9c0c8e44b53508b4ffeb5 -
LinuxLinux 6.14 -

II. Public POCs for CVE-2025-39875

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III. Intelligence Information for CVE-2025-39875

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Same Patch Batch · Linux · 2025-09-23 · 21 CVEs total

CVE-2025-39878ceph: fix crash after fscrypt_encrypt_pagecache_blocks() error
CVE-2025-39887tracing/osnoise: Fix null-ptr-deref in bitmap_parselist()
CVE-2025-39888fuse: Block access to folio overlimit
CVE-2025-39885ocfs2: fix recursive semaphore deadlock in fiemap call
CVE-2025-39886bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()
CVE-2025-39883mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory
CVE-2025-39884btrfs: fix subvolume deletion lockup caused by inodes xarray race
CVE-2025-39882drm/mediatek: fix potential OF node use-after-free
CVE-2025-39880libceph: fix invalid accesses to ceph_connection_v1_info
CVE-2025-39881kernfs: Fix UAF in polling when open file is released
CVE-2025-39868erofs: fix runtime warning on truncate_folio_batch_exceptionals()
CVE-2025-39879ceph: always call ceph_shift_unused_folios_left()
CVE-2025-39877mm/damon/sysfs: fix use-after-free in state_show()
CVE-2025-39876net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable()
CVE-2025-39874macsec: sync features on RTM_NEWLINK
CVE-2025-39873can: xilinx_can: xcan_write_frame(): fix use-after-free of transmitted SKB
CVE-2025-39872hsr: hold rcu and dev lock for hsr_get_port_ndev
CVE-2025-39871dmaengine: idxd: Remove improper idxd_free
CVE-2025-39869dmaengine: ti: edma: Fix memory allocation size for queue_priority_map
CVE-2025-39870dmaengine: idxd: Fix double free in idxd_setup_wqs()

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39875

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