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CVE-2025-21758

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CVE-2025-21758

Published: Feb 27, 2025

Modified: May 12, 2026

PUBLISHED

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: mcast: add RCU protection to mld_newpack() mld_newpack() can be called without RTNL or RCU being held. Note that we no longer can use sock_alloc_send_skb() because ipv6.igmp_sk uses GFP_KERNEL allocations which can sleep. Instead use alloc_skb() and charge the net->ipv6.igmp_sk socket under RCU protection.

VendorProductVersions

Linux

Linux

affected
b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 - < 29fa42197f26a97cde29fa8c40beddf44ea5c8f3
affected
b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 - < e8af3632a7f2da83e27b083f787bced1faba00b1
affected
b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 - < 1b91c597b0214b1b462eb627ec02658c944623f2
affected
b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 - < 25195f9d5ffcc8079ad743a50c0409dbdc48d98a
affected
b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 - < d60d493b0e65647e0335e6a7c4547abcea7df8e9

+1 more versions

Linux

Linux

affected
2.6.26
unaffected
0 - < 2.6.26
unaffected
5.15.179 - <= 5.15.*
unaffected
6.1.129 - <= 6.1.*
unaffected
6.6.79 - <= 6.6.*

+3 more versions

References

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