CVE-2025-21760

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < 10a1f3fece2f0d23a3a618b72b2b4e6f408ef7d1affected
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < 4d576202b90b1b95a7c428a80b536f91b8201bccaffected
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < e24d225e4cb8cf108bde00b76594499b98f0a74daffected
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < a9319d800b5701e7f5e3fa71a5b7c4831fc20d6daffected
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < ae38982f521621c216fc2f5182cd091f4734641daffected
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < 789230e5a8c1097301afc802e242c79bc8835c67affected
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < 04e05112f10354ffc3bb6cc796d553bab161594caffected
LinuxLinux1762f7e88eb34f653b4a915be99a102e347dd45e < ed6ae1f325d3c43966ec1b62ac1459e2b8e45640affected
LinuxLinux2.6.26affected
LinuxLinux0 < 2.6.26unaffected
LinuxLinux5.4.291 <= 5.4.*unaffected
LinuxLinux5.10.235 <= 5.10.*unaffected
LinuxLinux5.15.179 <= 5.15.*unaffected
LinuxLinux6.1.129 <= 6.1.*unaffected
LinuxLinux6.6.79 <= 6.6.*unaffected
LinuxLinux6.12.16 <= 6.12.*unaffected
LinuxLinux6.13.4 <= 6.13.*unaffected
LinuxLinux6.14 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

CVE Program Container

Additional References

Additional References

References