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CVE-2025-21764— ndisc: use RCU protection in ndisc_alloc_skb()

EPSS 0.01% · P3

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxde09334b9326632bbf1a74bfd8b01866cbbf2f61< 96fc896d0e5b37c12808df797397fb16f3080879affected
de09334b9326632bbf1a74bfd8b01866cbbf2f61< c30893ef3d9cde8e7e8e4fd06b53d2c935bbccb1affected
de09334b9326632bbf1a74bfd8b01866cbbf2f61< b870256dd2a5648d5ed2f22316b3ac29a7e5ed63affected
de09334b9326632bbf1a74bfd8b01866cbbf2f61< 3c2d705f5adf5d860aaef90cb4211c0fde2ba66daffected
de09334b9326632bbf1a74bfd8b01866cbbf2f61< 9e0ec817eb41a55327a46cd3ce331a9868d60304affected
de09334b9326632bbf1a74bfd8b01866cbbf2f61< bbec88e4108e8d6fb468d3817fa652140a44ff28affected
de09334b9326632bbf1a74bfd8b01866cbbf2f61< cd1065f92eb7ff21b9ba5308a86f33d1670bf926affected
de09334b9326632bbf1a74bfd8b01866cbbf2f61< 628e6d18930bbd21f2d4562228afe27694f66da9affected
… +10 more rows
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I. Basic Information for CVE-2025-21764

Vulnerability Information
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Vulnerability Title
ndisc: use RCU protection in ndisc_alloc_skb()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ndisc: use RCU protection in ndisc_alloc_skb() ndisc_alloc_skb() can be called without RTNL or RCU being held. Add RCU protection to avoid possible 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ndisc_alloc_skb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)

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Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux de09334b9326632bbf1a74bfd8b01866cbbf2f61 ~ 96fc896d0e5b37c12808df797397fb16f3080879 -
LinuxLinux 3.9 -

II. Public POCs for CVE-2025-21764

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III. Intelligence Information for CVE-2025-21764

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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-2025-21762arp: use RCU protection in arp_xmit()
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-2025-21764

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