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CVE-2025-21762— arp: use RCU protection in arp_xmit()

EPSS 0.01% · P3

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinux29a26a56803855a79dbd028cd61abee56237d6e5< 10f555e3f573d004ae9d89b3276abb58c4ede5c3affected
29a26a56803855a79dbd028cd61abee56237d6e5< 307cd1e2d3cb1cbc6c40c679cada6d7168b18431affected
29a26a56803855a79dbd028cd61abee56237d6e5< d9366ac2f956a1948b68c0500f84a3462ff2ed8aaffected
29a26a56803855a79dbd028cd61abee56237d6e5< f189654459423d4d48bef2d120b4bfba559e6039affected
29a26a56803855a79dbd028cd61abee56237d6e5< e9f4dee534eb1b225b0a120395ad9bc2afe164d3affected
29a26a56803855a79dbd028cd61abee56237d6e5< 01d1b5c9abcaff29a43f1d17a19c33eec92c7dbeaffected
29a26a56803855a79dbd028cd61abee56237d6e5< 2c331718d3389b6c5f6855078ab7171849e016bdaffected
29a26a56803855a79dbd028cd61abee56237d6e5< a42b69f692165ec39db42d595f4f65a4c8f42e44affected
… +10 more rows
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I. Basic Information for CVE-2025-21762

Vulnerability Information
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Vulnerability Title
arp: use RCU protection in arp_xmit()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arp_xmit() arp_xmit() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.
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 资源管理错误漏洞
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arp_xmit函数未使用RCU保护，可能导致释放后重用。
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 29a26a56803855a79dbd028cd61abee56237d6e5 ~ 10f555e3f573d004ae9d89b3276abb58c4ede5c3 -
LinuxLinux 4.4 -

II. Public POCs for CVE-2025-21762

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III. Intelligence Information for CVE-2025-21762

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Same Patch Batch · Linux · 2025-02-27 · 177 CVEs total

CVE-2025-217567.8 HIGHvsock: Keep the binding until socket destruction
CVE-2025-21773can: etas_es58x: fix potential NULL pointer dereference on udev->serial
CVE-2025-21761openvswitch: use RCU protection in ovs_vport_cmd_fill_info()
CVE-2025-21763neighbour: use RCU protection in __neigh_notify()
CVE-2025-21764ndisc: use RCU protection in ndisc_alloc_skb()
CVE-2025-21765ipv6: use RCU protection in ip6_default_advmss()
CVE-2025-21766ipv4: use RCU protection in __ip_rt_update_pmtu()
CVE-2025-21767clocksource: Use migrate_disable() to avoid calling get_random_u32() in atomic context
CVE-2025-21769ptp: vmclock: Add .owner to vmclock_miscdev_fops
CVE-2025-21768net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels
CVE-2025-21771sched_ext: Fix incorrect autogroup migration detection
CVE-2025-21770iommu: Fix potential memory leak in iopf_queue_remove_device()
CVE-2025-21777ring-buffer: Validate the persistent meta data subbuf array
CVE-2025-21783gpiolib: Fix crash on error in gpiochip_get_ngpios()
CVE-2025-21781batman-adv: fix panic during interface removal
CVE-2025-21780drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table()
CVE-2025-21779KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel
CVE-2025-21778tracing: Do not allow mmap() of persistent ring buffer
CVE-2025-21774can: rockchip: rkcanfd_handle_rx_fifo_overflow_int(): bail out if skb cannot be allocated
CVE-2025-21772partitions: mac: fix handling of bogus partition table

Showing top 20 of 177 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21762

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