Vulnerability-Lookup

GHSA-V753-HW9Q-P9VJ

Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-01-13 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

perf/x86/amd: Check event before enable to avoid GPF

On AMD machines cpuc->events[idx] can become NULL in a subtle race condition with NMI->throttle->x86_pmu_stop().

Check event for NULL in amd_pmu_enable_all() before enable to avoid a GPF. This appears to be an AMD only issue.

Syzkaller reported a GPF in amd_pmu_enable_all.

INFO: NMI handler (perf_event_nmi_handler) took too long to run: 13.143 msecs Oops: general protection fault, probably for non-canonical address 0xdffffc0000000034: 0000 PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x00000000000001a0-0x00000000000001a7] CPU: 0 UID: 0 PID: 328415 Comm: repro_36674776 Not tainted 6.12.0-rc1-syzk RIP: 0010:x86_pmu_enable_event (arch/x86/events/perf_event.h:1195 arch/x86/events/core.c:1430) RSP: 0018:ffff888118009d60 EFLAGS: 00010012 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000034 RSI: 0000000000000000 RDI: 00000000000001a0 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 R13: ffff88811802a440 R14: ffff88811802a240 R15: ffff8881132d8601 FS: 00007f097dfaa700(0000) GS:ffff888118000000(0000) GS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200001c0 CR3: 0000000103d56000 CR4: 00000000000006f0 Call Trace: amd_pmu_enable_all (arch/x86/events/amd/core.c:760 (discriminator 2)) x86_pmu_enable (arch/x86/events/core.c:1360) event_sched_out (kernel/events/core.c:1191 kernel/events/core.c:1186 kernel/events/core.c:2346) __perf_remove_from_context (kernel/events/core.c:2435) event_function (kernel/events/core.c:259) remote_function (kernel/events/core.c:92 (discriminator 1) kernel/events/core.c:72 (discriminator 1)) __flush_smp_call_function_queue (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/csd.h:64 kernel/smp.c:135 kernel/smp.c:540) __sysvec_call_function_single (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./arch/x86/include/asm/trace/irq_vectors.h:99 arch/x86/kernel/smp.c:272) sysvec_call_function_single (arch/x86/kernel/smp.c:266 (discriminator 47) arch/x86/kernel/smp.c:266 (discriminator 47))

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-68798"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-13T16:16:01Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/amd: Check event before enable to avoid GPF\n\nOn AMD machines cpuc-\u003eevents[idx] can become NULL in a subtle race\ncondition with NMI-\u003ethrottle-\u003ex86_pmu_stop().\n\nCheck event for NULL in amd_pmu_enable_all() before enable to avoid a GPF.\nThis appears to be an AMD only issue.\n\nSyzkaller reported a GPF in amd_pmu_enable_all.\n\nINFO: NMI handler (perf_event_nmi_handler) took too long to run: 13.143\n    msecs\nOops: general protection fault, probably for non-canonical address\n    0xdffffc0000000034: 0000  PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x00000000000001a0-0x00000000000001a7]\nCPU: 0 UID: 0 PID: 328415 Comm: repro_36674776 Not tainted 6.12.0-rc1-syzk\nRIP: 0010:x86_pmu_enable_event (arch/x86/events/perf_event.h:1195\n    arch/x86/events/core.c:1430)\nRSP: 0018:ffff888118009d60 EFLAGS: 00010012\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: 0000000000000034 RSI: 0000000000000000 RDI: 00000000000001a0\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002\nR13: ffff88811802a440 R14: ffff88811802a240 R15: ffff8881132d8601\nFS:  00007f097dfaa700(0000) GS:ffff888118000000(0000) GS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00000000200001c0 CR3: 0000000103d56000 CR4: 00000000000006f0\nCall Trace:\n \u003cIRQ\u003e\namd_pmu_enable_all (arch/x86/events/amd/core.c:760 (discriminator 2))\nx86_pmu_enable (arch/x86/events/core.c:1360)\nevent_sched_out (kernel/events/core.c:1191 kernel/events/core.c:1186\n    kernel/events/core.c:2346)\n__perf_remove_from_context (kernel/events/core.c:2435)\nevent_function (kernel/events/core.c:259)\nremote_function (kernel/events/core.c:92 (discriminator 1)\n    kernel/events/core.c:72 (discriminator 1))\n__flush_smp_call_function_queue (./arch/x86/include/asm/jump_label.h:27\n    ./include/linux/jump_label.h:207 ./include/trace/events/csd.h:64\n    kernel/smp.c:135 kernel/smp.c:540)\n__sysvec_call_function_single (./arch/x86/include/asm/jump_label.h:27\n    ./include/linux/jump_label.h:207\n    ./arch/x86/include/asm/trace/irq_vectors.h:99 arch/x86/kernel/smp.c:272)\nsysvec_call_function_single (arch/x86/kernel/smp.c:266 (discriminator 47)\n    arch/x86/kernel/smp.c:266 (discriminator 47))\n \u003c/IRQ\u003e",
  "id": "GHSA-v753-hw9q-p9vj",
  "modified": "2026-01-13T18:31:04Z",
  "published": "2026-01-13T18:31:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68798"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43c2e5c2acaae50e99d1c20a5a46e367c442fb3b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49324a0c40f7e9bae1bd0362d23fc42232e14621"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/866cf36bfee4fba6a492d2dcc5133f857e3446b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e1028fb38b328084bc683a4efb001c95d3108573"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68798 (GCVE-0-2025-68798)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-01-14 08:51

Title

perf/x86/amd: Check event before enable to avoid GPF

Summary

In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd: Check event before enable to avoid GPF On AMD machines cpuc->events[idx] can become NULL in a subtle race condition with NMI->throttle->x86_pmu_stop(). Check event for NULL in amd_pmu_enable_all() before enable to avoid a GPF. This appears to be an AMD only issue. Syzkaller reported a GPF in amd_pmu_enable_all. INFO: NMI handler (perf_event_nmi_handler) took too long to run: 13.143 msecs Oops: general protection fault, probably for non-canonical address 0xdffffc0000000034: 0000 PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x00000000000001a0-0x00000000000001a7] CPU: 0 UID: 0 PID: 328415 Comm: repro_36674776 Not tainted 6.12.0-rc1-syzk RIP: 0010:x86_pmu_enable_event (arch/x86/events/perf_event.h:1195 arch/x86/events/core.c:1430) RSP: 0018:ffff888118009d60 EFLAGS: 00010012 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000034 RSI: 0000000000000000 RDI: 00000000000001a0 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002 R13: ffff88811802a440 R14: ffff88811802a240 R15: ffff8881132d8601 FS: 00007f097dfaa700(0000) GS:ffff888118000000(0000) GS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200001c0 CR3: 0000000103d56000 CR4: 00000000000006f0 Call Trace: <IRQ> amd_pmu_enable_all (arch/x86/events/amd/core.c:760 (discriminator 2)) x86_pmu_enable (arch/x86/events/core.c:1360) event_sched_out (kernel/events/core.c:1191 kernel/events/core.c:1186 kernel/events/core.c:2346) __perf_remove_from_context (kernel/events/core.c:2435) event_function (kernel/events/core.c:259) remote_function (kernel/events/core.c:92 (discriminator 1) kernel/events/core.c:72 (discriminator 1)) __flush_smp_call_function_queue (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/csd.h:64 kernel/smp.c:135 kernel/smp.c:540) __sysvec_call_function_single (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./arch/x86/include/asm/trace/irq_vectors.h:99 arch/x86/kernel/smp.c:272) sysvec_call_function_single (arch/x86/kernel/smp.c:266 (discriminator 47) arch/x86/kernel/smp.c:266 (discriminator 47)) </IRQ>

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/49324a0c40f7e9bae…
	https://git.kernel.org/stable/c/6e41d9ec8d7cc3f01…
	https://git.kernel.org/stable/c/e1028fb38b328084b…
	https://git.kernel.org/stable/c/43c2e5c2acaae50e9…
	https://git.kernel.org/stable/c/866cf36bfee4fba6a…

Impacted products

Vendor

Product

Version

Linux

Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 49324a0c40f7e9bae1bd0362d23fc42232e14621 (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < e1028fb38b328084bc683a4efb001c95d3108573 (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 43c2e5c2acaae50e99d1c20a5a46e367c442fb3b (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 866cf36bfee4fba6a492d2dcc5133f857e3446b0 (git)

Linux

Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/events/amd/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "49324a0c40f7e9bae1bd0362d23fc42232e14621",
              "status": "affected",
              "version": "ada543459cab7f653dcacdaba4011a8bb19c627c",
              "versionType": "git"
            },
            {
              "lessThan": "6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f",
              "status": "affected",
              "version": "ada543459cab7f653dcacdaba4011a8bb19c627c",
              "versionType": "git"
            },
            {
              "lessThan": "e1028fb38b328084bc683a4efb001c95d3108573",
              "status": "affected",
              "version": "ada543459cab7f653dcacdaba4011a8bb19c627c",
              "versionType": "git"
            },
            {
              "lessThan": "43c2e5c2acaae50e99d1c20a5a46e367c442fb3b",
              "status": "affected",
              "version": "ada543459cab7f653dcacdaba4011a8bb19c627c",
              "versionType": "git"
            },
            {
              "lessThan": "866cf36bfee4fba6a492d2dcc5133f857e3446b0",
              "status": "affected",
              "version": "ada543459cab7f653dcacdaba4011a8bb19c627c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/events/amd/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.160",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.64",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.3",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19-rc1",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/amd: Check event before enable to avoid GPF\n\nOn AMD machines cpuc-\u003eevents[idx] can become NULL in a subtle race\ncondition with NMI-\u003ethrottle-\u003ex86_pmu_stop().\n\nCheck event for NULL in amd_pmu_enable_all() before enable to avoid a GPF.\nThis appears to be an AMD only issue.\n\nSyzkaller reported a GPF in amd_pmu_enable_all.\n\nINFO: NMI handler (perf_event_nmi_handler) took too long to run: 13.143\n    msecs\nOops: general protection fault, probably for non-canonical address\n    0xdffffc0000000034: 0000  PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x00000000000001a0-0x00000000000001a7]\nCPU: 0 UID: 0 PID: 328415 Comm: repro_36674776 Not tainted 6.12.0-rc1-syzk\nRIP: 0010:x86_pmu_enable_event (arch/x86/events/perf_event.h:1195\n    arch/x86/events/core.c:1430)\nRSP: 0018:ffff888118009d60 EFLAGS: 00010012\nRAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000\nRDX: 0000000000000034 RSI: 0000000000000000 RDI: 00000000000001a0\nRBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000002\nR13: ffff88811802a440 R14: ffff88811802a240 R15: ffff8881132d8601\nFS:  00007f097dfaa700(0000) GS:ffff888118000000(0000) GS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00000000200001c0 CR3: 0000000103d56000 CR4: 00000000000006f0\nCall Trace:\n \u003cIRQ\u003e\namd_pmu_enable_all (arch/x86/events/amd/core.c:760 (discriminator 2))\nx86_pmu_enable (arch/x86/events/core.c:1360)\nevent_sched_out (kernel/events/core.c:1191 kernel/events/core.c:1186\n    kernel/events/core.c:2346)\n__perf_remove_from_context (kernel/events/core.c:2435)\nevent_function (kernel/events/core.c:259)\nremote_function (kernel/events/core.c:92 (discriminator 1)\n    kernel/events/core.c:72 (discriminator 1))\n__flush_smp_call_function_queue (./arch/x86/include/asm/jump_label.h:27\n    ./include/linux/jump_label.h:207 ./include/trace/events/csd.h:64\n    kernel/smp.c:135 kernel/smp.c:540)\n__sysvec_call_function_single (./arch/x86/include/asm/jump_label.h:27\n    ./include/linux/jump_label.h:207\n    ./arch/x86/include/asm/trace/irq_vectors.h:99 arch/x86/kernel/smp.c:272)\nsysvec_call_function_single (arch/x86/kernel/smp.c:266 (discriminator 47)\n    arch/x86/kernel/smp.c:266 (discriminator 47))\n \u003c/IRQ\u003e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-14T08:51:36.755Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/49324a0c40f7e9bae1bd0362d23fc42232e14621"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e1028fb38b328084bc683a4efb001c95d3108573"
        },
        {
          "url": "https://git.kernel.org/stable/c/43c2e5c2acaae50e99d1c20a5a46e367c442fb3b"
        },
        {
          "url": "https://git.kernel.org/stable/c/866cf36bfee4fba6a492d2dcc5133f857e3446b0"
        }
      ],
      "title": "perf/x86/amd: Check event before enable to avoid GPF",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68798",
    "datePublished": "2026-01-13T15:29:08.329Z",
    "dateReserved": "2025-12-24T10:30:51.042Z",
    "dateUpdated": "2026-01-14T08:51:36.755Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-V753-HW9Q-P9VJ

CVE-2025-68798 (GCVE-0-2025-68798)

Tags

Sightings

Nomenclature