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CVE-2026-53323— net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops

AI Predicted 5.9 Difficulty: Moderate EPSS 0.09% · P1

Possible ATT&CK Techniques 1AI

T1003 · OS Credential Dumping

Affected Version Matrix 8

VendorProductVersion RangeStatus
LinuxLinux2bcf4772e45adb00649a4e9cbff14b08a144f9e3< 74d64ae4254e99ef8c8215b057a76edac82c5f99affected
2bcf4772e45adb00649a4e9cbff14b08a144f9e3< abe91fd045874d21834482adcd7a9693e7377056affected
2bcf4772e45adb00649a4e9cbff14b08a144f9e3< 0f99e0c3e19badaf3fdced0d3feba623e59eed41affected
6.15affected
< 6.15unaffected
6.18.33≤ 6.18.*unaffected
7.0.10≤ 7.0.*unaffected
7.1≤ *unaffected
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I. Basic Information for CVE-2026-53323

Vulnerability Information
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Vulnerability Title
net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: dsa: remove redundant netdev_lock_ops() from conduit ethtool ops DSA replaces the conduit (master) device's ethtool_ops with its own wrappers that aggregate stats from both the conduit and DSA switch ports. Taking the lock again inside the DSA wrappers causes a deadlock. Stumbled upon this when booting qemu with fbnic and CONFIG_NET_DSA_LOOP=y (which looks like some kind of testing device that auto-populates the ports of eth0). `ethtool -i` is enough to deadlock. This means we have basically zero coverage for DSA stuff with real ops locked devs. Remove the redundant netdev_lock_ops()/netdev_unlock_ops() calls from the DSA conduit ethtool wrappers.
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基金会开源的操作系统Linux所使用的内核。 Linux kernel 6.15版本存在安全漏洞，该漏洞源于net/dsa/conduit.c中死锁问题，可能导致拒绝服务。
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 2bcf4772e45adb00649a4e9cbff14b08a144f9e3 ~ 74d64ae4254e99ef8c8215b057a76edac82c5f99 -
LinuxLinux 6.15 -

II. Public POCs for CVE-2026-53323

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III. Intelligence Information for CVE-2026-53323

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Patches & Fixes for CVE-2026-53323 (3)

Same Patch Batch · Linux · 2026-06-26 · 47 CVEs total

CVE-2026-533099.8 CRITICALocfs2/dlm: fix off-by-one in dlm_match_regions() region comparison
CVE-2026-533228.8 HIGHvfio/pci: Clean up DMABUFs before disabling function
CVE-2026-532818.8 HIGHiommu/vt-d: Avoid NULL pointer dereference or refcount corruption
CVE-2026-533007.8 HIGHnet: enetc: fix NTMP DMA use-after-free issue
CVE-2026-532907.8 HIGHdrm/xe/eustall: Fix drm_dev_put called before stream disable in close
CVE-2026-532847.5 HIGHbtrfs: only release the dirty pages io tree after successful writes
CVE-2026-53293drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REG
CVE-2026-53324net: mana: Use pci_name() for debugfs directory naming
CVE-2026-53283iommu/amd: Bounds-check devid in __rlookup_amd_iommu()
CVE-2026-53280iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done()
CVE-2026-53282x86/kexec: Push kjump return address even for non-kjump kexec
CVE-2026-53279drm/gma500/oaktrail_lvds: fix hang on init failure
CVE-2026-53292net: phonet: do not BUG_ON() in pn_socket_autobind() on failed bind
CVE-2026-53291ALSA: hda/conexant: Fix missing error check for jack detection
CVE-2026-53289ice: fix NULL pointer dereference in ice_reset_all_vfs()
CVE-2026-53294mailbox: mailbox-test: don't free the reused channel
CVE-2026-53295mailbox: add sanity check for channel array
CVE-2026-53296mailbox: mailbox-test: free channels on probe error
CVE-2026-53297net: mana: Guard mana_remove against double invocation
CVE-2026-53298net: airoha: Move ndesc initialization at end of airoha_qdma_init_rx_queue()

Showing top 20 of 47 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53323

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