CVE-2026-23212 (GCVE-0-2026-23212)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:16 – Updated: 2026-02-18 14:16
VLAI?
Title
bonding: annotate data-races around slave->last_rx
Summary
In the Linux kernel, the following vulnerability has been resolved: bonding: annotate data-races around slave->last_rx slave->last_rx and slave->target_last_arp_rx[...] can be read and written locklessly. Add READ_ONCE() and WRITE_ONCE() annotations. syzbot reported: BUG: KCSAN: data-race in bond_rcv_validate / bond_rcv_validate write to 0xffff888149f0d428 of 8 bytes by interrupt on cpu 1: bond_rcv_validate+0x202/0x7a0 drivers/net/bonding/bond_main.c:3335 bond_handle_frame+0xde/0x5e0 drivers/net/bonding/bond_main.c:1533 __netif_receive_skb_core+0x5b1/0x1950 net/core/dev.c:6039 __netif_receive_skb_one_core net/core/dev.c:6150 [inline] __netif_receive_skb+0x59/0x270 net/core/dev.c:6265 netif_receive_skb_internal net/core/dev.c:6351 [inline] netif_receive_skb+0x4b/0x2d0 net/core/dev.c:6410 ... write to 0xffff888149f0d428 of 8 bytes by interrupt on cpu 0: bond_rcv_validate+0x202/0x7a0 drivers/net/bonding/bond_main.c:3335 bond_handle_frame+0xde/0x5e0 drivers/net/bonding/bond_main.c:1533 __netif_receive_skb_core+0x5b1/0x1950 net/core/dev.c:6039 __netif_receive_skb_one_core net/core/dev.c:6150 [inline] __netif_receive_skb+0x59/0x270 net/core/dev.c:6265 netif_receive_skb_internal net/core/dev.c:6351 [inline] netif_receive_skb+0x4b/0x2d0 net/core/dev.c:6410 br_netif_receive_skb net/bridge/br_input.c:30 [inline] NF_HOOK include/linux/netfilter.h:318 [inline] ... value changed: 0x0000000100005365 -> 0x0000000100005366
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f5b2b966f032f22d3a289045a5afd4afa09f09c6 , < a7516cb0165926d308187e231ccd330e5e3ebff7 (git)
Affected: f5b2b966f032f22d3a289045a5afd4afa09f09c6 , < 8c0be3277e7aefb2f900fc37ca3fe7df362e26f5 (git)
Affected: f5b2b966f032f22d3a289045a5afd4afa09f09c6 , < b956289b83887e0a306067b6003c3fcd81bfdf84 (git)
Affected: f5b2b966f032f22d3a289045a5afd4afa09f09c6 , < bd98324e327e41de04b13e372cc16f73150df254 (git)
Affected: f5b2b966f032f22d3a289045a5afd4afa09f09c6 , < f6c3665b6dc53c3ab7d31b585446a953a74340ef (git)
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    Linux Linux Affected: 2.6.19
Unaffected: 0 , < 2.6.19 (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.123 , ≤ 6.6.* (semver)
Unaffected: 6.12.69 , ≤ 6.12.* (semver)
Unaffected: 6.18.9 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/bonding/bond_main.c",
            "drivers/net/bonding/bond_options.c",
            "include/net/bonding.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          ]
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/bonding/bond_main.c",
            "drivers/net/bonding/bond_options.c",
            "include/net/bonding.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "2.6.19"
            },
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              "lessThan": "2.6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.123",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.69",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-18T14:16:28.104Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a7516cb0165926d308187e231ccd330e5e3ebff7"
        },
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          "url": "https://git.kernel.org/stable/c/8c0be3277e7aefb2f900fc37ca3fe7df362e26f5"
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        },
        {
          "url": "https://git.kernel.org/stable/c/f6c3665b6dc53c3ab7d31b585446a953a74340ef"
        }
      ],
      "title": "bonding: annotate data-races around slave-\u003elast_rx",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23212",
    "datePublished": "2026-02-18T14:16:28.104Z",
    "dateReserved": "2026-01-13T15:37:45.986Z",
    "dateUpdated": "2026-02-18T14:16:28.104Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23212\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-18T15:18:42.470\",\"lastModified\":\"2026-02-18T17:51:53.510\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8c0be3277e7aefb2f900fc37ca3fe7df362e26f5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a7516cb0165926d308187e231ccd330e5e3ebff7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b956289b83887e0a306067b6003c3fcd81bfdf84\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bd98324e327e41de04b13e372cc16f73150df254\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f6c3665b6dc53c3ab7d31b585446a953a74340ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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