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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-23001

macvlan: fix possible UAF in macvlan_forward_source()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: macvlan: fix possible UAF in macvlan_forward_source() Add RCU protection on (struct macvlan_source_entry)->vlan. Whenever macvlan_hash_del_source() is called, we must clear entry->vlan pointer before RCU grace period starts. This allows macvlan_forward_source() to skip over entries queued for freeing. Note that macvlan_dev are already RCU protected, as they are embedded in a standard netdev (netdev_priv(ndev)). https: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u

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

  • 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 8133e85b8a3ec9f10d861e0002ec6037256e987eaffected
  • 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 484919832e2db6ce1e8add92c469e5d459a516b5affected
  • 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 232afc74a6dde0fe1830988e5827921f5ec9bb3faffected
  • 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 15f6faf36e162532bec5cc05eb3fc622108bf2edaffected
  • 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 8518712a2ca952d6da2238c6f0a16b4ae5ea3f13affected
  • 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 6dbead9c7677186f22b7981dd085a0feec1f038eaffected
  • 79cf79abce71eb7dbc40e2f3121048ca5405cb47 to < 7470a7a63dc162f07c26dbf960e41ee1e248d80eaffected

Linux Linux

Default version status: affected

  • 3.18affected
  • 0 to < 3.18unaffected
  • 5.10.249 to ≤ 5.10.*unaffected
  • 5.15.199 to ≤ 5.15.*unaffected
  • 6.1.162 to ≤ 6.1.*unaffected
  • 6.6.122 to ≤ 6.6.*unaffected
  • 6.12.67 to ≤ 6.12.*unaffected
  • 6.18.7 to ≤ 6.18.*unaffected
  • 6.19 to ≤ *unaffected

References