{"id":"CVE-2026-23212","title":"bonding: annotate data-races around slave->last_rx","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbonding: annotate data-races around slave->last_rx\n\nslave->last_rx and slave->target_last_arp_rx[...] can be read and written\nlocklessly. Add READ_ONCE() and WRITE_ONCE…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < a7516cb0165926d308187e231ccd330e5e3ebff7","Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < 8c0be3277e7aefb2f900fc37ca3fe7df362e26f5","Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < b956289b83887e0a306067b6003c3fcd81bfdf84","Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < bd98324e327e41de04b13e372cc16f73150df254","Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < f6c3665b6dc53c3ab7d31b585446a953a74340ef","Linux 2.6.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-10T20:42:09.675357Z"},"published":"2026-02-18","updated":"2026-10-19","sourceUpdated":"2026-10-19T18:35:39.012Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23212","references":[{"url":"https://git.kernel.org/stable/c/a7516cb0165926d308187e231ccd330e5e3ebff7"},{"url":"https://git.kernel.org/stable/c/8c0be3277e7aefb2f900fc37ca3fe7df362e26f5"},{"url":"https://git.kernel.org/stable/c/b956289b83887e0a306067b6003c3fcd81bfdf84"},{"url":"https://git.kernel.org/stable/c/bd98324e327e41de04b13e372cc16f73150df254"},{"url":"https://git.kernel.org/stable/c/f6c3665b6dc53c3ab7d31b585446a953a74340ef"}],"tags":["cve.org"],"epss":0.00098,"epssPercentile":0.00741,"ingestedAt":"2026-10-19T19:38:06.499Z","slug":"CVE-2026-23212","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbonding: annotate data-races around slave->last_rx\n\nslave->last_rx and slave->target_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 -> 0x0000000100005366\n\n## Affected\n\n- `Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < a7516cb0165926d308187e231ccd330e5e3ebff7`\n- `Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < 8c0be3277e7aefb2f900fc37ca3fe7df362e26f5`\n- `Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < b956289b83887e0a306067b6003c3fcd81bfdf84`\n- `Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < bd98324e327e41de04b13e372cc16f73150df254`\n- `Linux >= f5b2b966f032f22d3a289045a5afd4afa09f09c6 < f6c3665b6dc53c3ab7d31b585446a953a74340ef`\n- `Linux 2.6.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}