{"id":"CVE-2026-23212","state":"PUBLISHED","title":"bonding: annotate data-races around slave->last_rx","description":"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() 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","publishedAt":"2026-02-18T14:16:28.104Z","updatedAt":"2026-10-19T18:35:39.012Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"a7516cb0165926d308187e231ccd330e5e3ebff7","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"8c0be3277e7aefb2f900fc37ca3fe7df362e26f5","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"b956289b83887e0a306067b6003c3fcd81bfdf84","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"bd98324e327e41de04b13e372cc16f73150df254","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"f6c3665b6dc53c3ab7d31b585446a953a74340ef","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c","drivers/net/bonding/bond_options.c","include/net/bonding.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.19","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.123","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.69","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.9","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c","drivers/net/bonding/bond_options.c","include/net/bonding.h"]}],"references":["https://git.kernel.org/stable/c/a7516cb0165926d308187e231ccd330e5e3ebff7","https://git.kernel.org/stable/c/8c0be3277e7aefb2f900fc37ca3fe7df362e26f5","https://git.kernel.org/stable/c/b956289b83887e0a306067b6003c3fcd81bfdf84","https://git.kernel.org/stable/c/bd98324e327e41de04b13e372cc16f73150df254","https://git.kernel.org/stable/c/f6c3665b6dc53c3ab7d31b585446a953a74340ef"],"weaknesses":["CWE-362"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23212.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23212","state":"PUBLISHED","datePublished":"2026-02-18T14:16:28.104Z","dateUpdated":"2026-10-19T18:35:39.012Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:45.986Z"},"containers":{"cna":{"title":"bonding: annotate data-races around slave->last_rx","descriptions":[{"lang":"en","value":"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() 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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"a7516cb0165926d308187e231ccd330e5e3ebff7","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"8c0be3277e7aefb2f900fc37ca3fe7df362e26f5","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"b956289b83887e0a306067b6003c3fcd81bfdf84","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"bd98324e327e41de04b13e372cc16f73150df254","versionType":"git"},{"version":"f5b2b966f032f22d3a289045a5afd4afa09f09c6","status":"affected","lessThan":"f6c3665b6dc53c3ab7d31b585446a953a74340ef","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c","drivers/net/bonding/bond_options.c","include/net/bonding.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.19","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.123","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.69","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.9","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/bonding/bond_main.c","drivers/net/bonding/bond_options.c","include/net/bonding.h"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:02:29.466Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.19","versionEndExcluding":"6.1.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.19","versionEndExcluding":"6.6.123"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.19","versionEndExcluding":"6.12.69"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.19","versionEndExcluding":"6.18.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.19","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-23212","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-06-10T20:42:09.675357Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-362","lang":"en","type":"CWE","description":"CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-19T18:35:39.012Z"}}]}}}