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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2025-21758

ipv6: mcast: add RCU protection to mld_newpack()

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 to < 29fa42197f26a97cde29fa8c40beddf44ea5c8f3affected
  • b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 to < e8af3632a7f2da83e27b083f787bced1faba00b1affected
  • b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 to < 1b91c597b0214b1b462eb627ec02658c944623f2affected
  • b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 to < 25195f9d5ffcc8079ad743a50c0409dbdc48d98aaffected
  • b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 to < d60d493b0e65647e0335e6a7c4547abcea7df8e9affected
  • b8ad0cbc58f703972e9e37c4e2a8081dd7e6a551 to < a527750d877fd334de87eef81f1cb5f0f0ca3373affected

Linux Linux

Default version status: affected

  • 2.6.26affected
  • 0 to < 2.6.26unaffected
  • 5.15.179 to ≤ 5.15.*unaffected
  • 6.1.129 to ≤ 6.1.*unaffected
  • 6.6.79 to ≤ 6.6.*unaffected
  • 6.12.16 to ≤ 6.12.*unaffected
  • 6.13.4 to ≤ 6.13.*unaffected
  • 6.14 to ≤ *unaffected

References