CVE-2025-21760— ndisc: extend RCU protection in ndisc_send_skb()
Affected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1762f7e88eb34f653b4a915be99a102e347dd45e< 10a1f3fece2f0d23a3a618b72b2b4e6f408ef7d1 | affected |
1762f7e88eb34f653b4a915be99a102e347dd45e< 4d576202b90b1b95a7c428a80b536f91b8201bcc | affected | ||
1762f7e88eb34f653b4a915be99a102e347dd45e< e24d225e4cb8cf108bde00b76594499b98f0a74d | affected | ||
1762f7e88eb34f653b4a915be99a102e347dd45e< a9319d800b5701e7f5e3fa71a5b7c4831fc20d6d | affected | ||
1762f7e88eb34f653b4a915be99a102e347dd45e< ae38982f521621c216fc2f5182cd091f4734641d | affected | ||
1762f7e88eb34f653b4a915be99a102e347dd45e< 789230e5a8c1097301afc802e242c79bc8835c67 | affected | ||
1762f7e88eb34f653b4a915be99a102e347dd45e< 04e05112f10354ffc3bb6cc796d553bab161594c | affected | ||
1762f7e88eb34f653b4a915be99a102e347dd45e< ed6ae1f325d3c43966ec1b62ac1459e2b8e45640 | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2025-21760
Vulnerability Information
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Vulnerability Title
ndisc: extend RCU protection in ndisc_send_skb()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ndisc: extend RCU protection in ndisc_send_skb() ndisc_send_skb() can be called without RTNL or RCU held. Acquire rcu_read_lock() earlier, so that we can use dev_net_rcu() and avoid a 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ndisc_send_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)
Affected Products
II. Public POCs for CVE-2025-21760
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-21760 (5)
Other References for CVE-2025-21760 (3)
Same Patch Batch · Linux · 2025-02-27 · 177 CVEs total
| CVE-2025-21756 | 7.8 HIGH | vsock: Keep the binding until socket destruction |
| CVE-2025-21773 | can: etas_es58x: fix potential NULL pointer dereference on udev->serial | |
| CVE-2025-21763 | neighbour: use RCU protection in __neigh_notify() | |
| CVE-2025-21762 | arp: use RCU protection in arp_xmit() | |
| CVE-2025-21764 | ndisc: use RCU protection in ndisc_alloc_skb() | |
| CVE-2025-21765 | ipv6: use RCU protection in ip6_default_advmss() | |
| CVE-2025-21766 | ipv4: use RCU protection in __ip_rt_update_pmtu() | |
| CVE-2025-21767 | clocksource: Use migrate_disable() to avoid calling get_random_u32() in atomic context | |
| CVE-2025-21769 | ptp: vmclock: Add .owner to vmclock_miscdev_fops | |
| CVE-2025-21768 | net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels | |
| CVE-2025-21771 | sched_ext: Fix incorrect autogroup migration detection | |
| CVE-2025-21770 | iommu: Fix potential memory leak in iopf_queue_remove_device() | |
| CVE-2025-21777 | ring-buffer: Validate the persistent meta data subbuf array | |
| CVE-2025-21783 | gpiolib: Fix crash on error in gpiochip_get_ngpios() | |
| CVE-2025-21781 | batman-adv: fix panic during interface removal | |
| CVE-2025-21780 | drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() | |
| CVE-2025-21779 | KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel | |
| CVE-2025-21778 | tracing: Do not allow mmap() of persistent ring buffer | |
| CVE-2025-21774 | can: rockchip: rkcanfd_handle_rx_fifo_overflow_int(): bail out if skb cannot be allocated | |
| CVE-2025-21772 | partitions: mac: fix handling of bogus partition table |
Showing top 20 of 177 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2025-21760
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