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CVE-2025-21758

ipv6: mcast: add RCU protection to mld_newpack() PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 before 29fa42197f26a97cde29fa8c40beddf44ea5c8f3; affected b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 before e8af3632a7f2da83e27b083f787bced1faba00b1; affected b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 before 1b91c597b0214b1b462eb627ec02658c944623f2; affected b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 before 25195f9d5ffcc8079ad743a50c0409dbdc48d98a; affected b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 before d60d493b0e65647e0335e6a7c4547abcea7df8e9; affected b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 before a527750d877fd334de87eef81f1cb5f0f0ca3373
Linux / Linuxaffected 2.6.26; unaffected 0 before 2.6.26; unaffected 5.15.179 through 5.15.*; unaffected 6.1.129 through 6.1.*; unaffected 6.6.79 through 6.6.*; unaffected 6.12.16 through 6.12.*; unaffected 6.13.4 through 6.13.*; unaffected 6.14 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CVE

No English description supplied.

siemens-SADP

No English description supplied.