{"id":"AZL-77865","summary":"CVE-2026-23212 affecting package kernel for versions less than 6.6.126.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: annotate data-races around slave-\u003elast_rx\n\nslave-\u003elast_rx and slave-\u003etarget_last_arp_rx[...] can be read and written\nlocklessly. Add READ_ONCE() and WRITE_ONCE() annotations.\n\nsyzbot reported:\n\nBUG: KCSAN: data-race in bond_rcv_validate / bond_rcv_validate\n\nwrite to 0xffff888149f0d428 of 8 bytes by interrupt on cpu 1:\n  bond_rcv_validate+0x202/0x7a0 drivers/net/bonding/bond_main.c:3335\n  bond_handle_frame+0xde/0x5e0 drivers/net/bonding/bond_main.c:1533\n  __netif_receive_skb_core+0x5b1/0x1950 net/core/dev.c:6039\n  __netif_receive_skb_one_core net/core/dev.c:6150 [inline]\n  __netif_receive_skb+0x59/0x270 net/core/dev.c:6265\n  netif_receive_skb_internal net/core/dev.c:6351 [inline]\n  netif_receive_skb+0x4b/0x2d0 net/core/dev.c:6410\n...\n\nwrite to 0xffff888149f0d428 of 8 bytes by interrupt on cpu 0:\n  bond_rcv_validate+0x202/0x7a0 drivers/net/bonding/bond_main.c:3335\n  bond_handle_frame+0xde/0x5e0 drivers/net/bonding/bond_main.c:1533\n  __netif_receive_skb_core+0x5b1/0x1950 net/core/dev.c:6039\n  __netif_receive_skb_one_core net/core/dev.c:6150 [inline]\n  __netif_receive_skb+0x59/0x270 net/core/dev.c:6265\n  netif_receive_skb_internal net/core/dev.c:6351 [inline]\n  netif_receive_skb+0x4b/0x2d0 net/core/dev.c:6410\n  br_netif_receive_skb net/bridge/br_input.c:30 [inline]\n  NF_HOOK include/linux/netfilter.h:318 [inline]\n...\n\nvalue changed: 0x0000000100005365 -\u003e 0x0000000100005366","modified":"2026-08-28T17:47:51.815859057Z","published":"2026-02-18T15:18:42Z","upstream":["CVE-2026-23212"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23212"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.126.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-77865.json"}}],"schema_version":"1.9.0"}