CVE-2025-21758 (GCVE-0-2025-21758)
Vulnerability from cvelistv5
Published
2025-02-27 02:18
Modified
2025-05-04 07:20
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551
Version: b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551
Version: b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551
Version: b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551
Version: b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551
Version: b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551
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{
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          "programFiles": [
            "net/ipv6/mcast.c"
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        "dateUpdated": "2025-05-04T07:20:29.913Z",
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    "dateReserved": "2024-12-29T08:45:45.761Z",
    "dateUpdated": "2025-05-04T07:20:29.913Z",
    "state": "PUBLISHED"
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  }
}


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