[ciqlts9_6] macvlan: fix possible UAF in macvlan_forward_source()#1016
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roxanan1996 merged 1 commit intociqlts9_6from Mar 26, 2026
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[ciqlts9_6] macvlan: fix possible UAF in macvlan_forward_source()#1016roxanan1996 merged 1 commit intociqlts9_6from
roxanan1996 merged 1 commit intociqlts9_6from
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jira VULN-174919 cve CVE-2026-23001 commit-author Eric Dumazet <edumazet@google.com> commit 7470a7a 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)). Fixes: 79cf79a ("macvlan: add source mode") Reported-by: syzbot+7182fbe91e58602ec1fe@syzkaller.appspotmail.com https: //lore.kernel.org/netdev/695fb1e8.050a0220.1c677c.039f.GAE@google.com/T/#u Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20260108133651.1130486-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> (cherry picked from commit 7470a7a) Signed-off-by: CIQ Kernel Automation <ciq_kernel_automation@ciq.com>
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shreeya-patel98
approved these changes
Mar 26, 2026
roxanan1996
approved these changes
Mar 26, 2026
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