CVE-2023-54086 (GCVE-0-2023-54086)
Vulnerability from cvelistv5
Published
2025-12-24 13:06
Modified
2025-12-24 13:06
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Add preempt_count_{sub,add} into btf id deny list The recursion check in __bpf_prog_enter* and __bpf_prog_exit* leave preempt_count_{sub,add} unprotected. When attaching trampoline to them we get panic as follows, [ 867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28) [ 867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI [ 867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4 [ 867.843100] Call Trace: [ 867.843101] <TASK> [ 867.843104] asm_exc_int3+0x3a/0x40 [ 867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0 [ 867.843135] __bpf_prog_enter_recur+0x17/0x90 [ 867.843148] bpf_trampoline_6442468108_0+0x2e/0x1000 [ 867.843154] ? preempt_count_sub+0x1/0xa0 [ 867.843157] preempt_count_sub+0x5/0xa0 [ 867.843159] ? migrate_enable+0xac/0xf0 [ 867.843164] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843168] bpf_trampoline_6442468108_0+0x55/0x1000 ... [ 867.843788] preempt_count_sub+0x5/0xa0 [ 867.843793] ? migrate_enable+0xac/0xf0 [ 867.843829] __bpf_prog_exit_recur+0x2d/0x40 [ 867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35) [ 867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c) [ 867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec) [ 867.843842] bpf_trampoline_6442468108_0+0x55/0x1000 ... That is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are called after prog->active is decreased. Fixing this by adding these two functions into btf ids deny list.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "095018267c87b8bfbbb12eeb1c0ebf2359e1782c",
              "status": "affected",
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              "versionType": "git"
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              "lessThan": "60039bf72f81638baa28652a11a68e9b0b7b5b2d",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
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              "versionType": "git"
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              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.113",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Add preempt_count_{sub,add} into btf id deny list\n\nThe recursion check in __bpf_prog_enter* and __bpf_prog_exit*\nleave preempt_count_{sub,add} unprotected. When attaching trampoline to\nthem we get panic as follows,\n\n[  867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28)\n[  867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI\n[  867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4\n[  867.843100] Call Trace:\n[  867.843101]  \u003cTASK\u003e\n[  867.843104]  asm_exc_int3+0x3a/0x40\n[  867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0\n[  867.843135]  __bpf_prog_enter_recur+0x17/0x90\n[  867.843148]  bpf_trampoline_6442468108_0+0x2e/0x1000\n[  867.843154]  ? preempt_count_sub+0x1/0xa0\n[  867.843157]  preempt_count_sub+0x5/0xa0\n[  867.843159]  ? migrate_enable+0xac/0xf0\n[  867.843164]  __bpf_prog_exit_recur+0x2d/0x40\n[  867.843168]  bpf_trampoline_6442468108_0+0x55/0x1000\n...\n[  867.843788]  preempt_count_sub+0x5/0xa0\n[  867.843793]  ? migrate_enable+0xac/0xf0\n[  867.843829]  __bpf_prog_exit_recur+0x2d/0x40\n[  867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35)\n[  867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c)\n[  867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec)\n[  867.843842]  bpf_trampoline_6442468108_0+0x55/0x1000\n...\n\nThat is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are\ncalled after prog-\u003eactive is decreased.\n\nFixing this by adding these two functions into btf ids deny list."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T13:06:16.857Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/095018267c87b8bfbbb12eeb1c0ebf2359e1782c"
        },
        {
          "url": "https://git.kernel.org/stable/c/60039bf72f81638baa28652a11a68e9b0b7b5b2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/b9168d41b83d182f34ba927ee822edaee18d5fc8"
        },
        {
          "url": "https://git.kernel.org/stable/c/c11bd046485d7bf1ca200db0e7d0bdc4bafdd395"
        }
      ],
      "title": "bpf: Add preempt_count_{sub,add} into btf id deny list",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54086",
    "datePublished": "2025-12-24T13:06:16.857Z",
    "dateReserved": "2025-12-24T13:02:52.515Z",
    "dateUpdated": "2025-12-24T13:06:16.857Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54086\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:10.453\",\"lastModified\":\"2025-12-24T13:16:10.453\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: Add preempt_count_{sub,add} into btf id deny list\\n\\nThe recursion check in __bpf_prog_enter* and __bpf_prog_exit*\\nleave preempt_count_{sub,add} unprotected. When attaching trampoline to\\nthem we get panic as follows,\\n\\n[  867.843050] BUG: TASK stack guard page was hit at 0000000009d325cf (stack is 0000000046a46a15..00000000537e7b28)\\n[  867.843064] stack guard page: 0000 [#1] PREEMPT SMP NOPTI\\n[  867.843067] CPU: 8 PID: 11009 Comm: trace Kdump: loaded Not tainted 6.2.0+ #4\\n[  867.843100] Call Trace:\\n[  867.843101]  \u003cTASK\u003e\\n[  867.843104]  asm_exc_int3+0x3a/0x40\\n[  867.843108] RIP: 0010:preempt_count_sub+0x1/0xa0\\n[  867.843135]  __bpf_prog_enter_recur+0x17/0x90\\n[  867.843148]  bpf_trampoline_6442468108_0+0x2e/0x1000\\n[  867.843154]  ? preempt_count_sub+0x1/0xa0\\n[  867.843157]  preempt_count_sub+0x5/0xa0\\n[  867.843159]  ? migrate_enable+0xac/0xf0\\n[  867.843164]  __bpf_prog_exit_recur+0x2d/0x40\\n[  867.843168]  bpf_trampoline_6442468108_0+0x55/0x1000\\n...\\n[  867.843788]  preempt_count_sub+0x5/0xa0\\n[  867.843793]  ? migrate_enable+0xac/0xf0\\n[  867.843829]  __bpf_prog_exit_recur+0x2d/0x40\\n[  867.843837] BUG: IRQ stack guard page was hit at 0000000099bd8228 (stack is 00000000b23e2bc4..000000006d95af35)\\n[  867.843841] BUG: IRQ stack guard page was hit at 000000005ae07924 (stack is 00000000ffd69623..0000000014eb594c)\\n[  867.843843] BUG: IRQ stack guard page was hit at 00000000028320f0 (stack is 00000000034b6438..0000000078d1bcec)\\n[  867.843842]  bpf_trampoline_6442468108_0+0x55/0x1000\\n...\\n\\nThat is because in __bpf_prog_exit_recur, the preempt_count_{sub,add} are\\ncalled after prog-\u003eactive is decreased.\\n\\nFixing this by adding these two functions into btf ids deny list.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/095018267c87b8bfbbb12eeb1c0ebf2359e1782c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/60039bf72f81638baa28652a11a68e9b0b7b5b2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b9168d41b83d182f34ba927ee822edaee18d5fc8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c11bd046485d7bf1ca200db0e7d0bdc4bafdd395\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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