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

Vulnerability from cvelistv5 – Published: 2026-01-13 15:29 – Updated: 2026-09-08 08:43
VLAI
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
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 49324a0c40f7e9bae1bd0362d23fc42232e14621 (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < e1028fb38b328084bc683a4efb001c95d3108573 (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 43c2e5c2acaae50e99d1c20a5a46e367c442fb3b (git)
Affected: ada543459cab7f653dcacdaba4011a8bb19c627c , < 866cf36bfee4fba6a492d2dcc5133f857e3446b0 (git)
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Linux 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 , ≤ * (original_commit_for_fix)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.6 , < * (custom)
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Esto parece ser un problema exclusivo de AMD.\\n\\nSyzkaller inform\u00f3 un GPF en amd_pmu_enable_all.\\n\\nINFO: El manejador NMI (perf_event_nmi_handler) tard\u00f3 demasiado en ejecutarse: 13.143\\n    msecs\\nOops: fallo de protecci\u00f3n general, probablemente para direcci\u00f3n no can\u00f3nica\\n    0xdffffc0000000034: 0000  PREEMPT SMP KASAN NOPTI\\nKASAN: desreferencia de puntero nulo en el rango [0x00000000000001a0-0x00000000000001a7]\\nCPU: 0 UID: 0 PID: 328415 Comm: repro_36674776 No contaminado 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\\nRastro de Llamada:\\n \\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 \"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"arch/x86/events/amd/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"ada543459cab7f653dcacdaba4011a8bb19c627c\",\"lessThan\":\"49324a0c40f7e9bae1bd0362d23fc42232e14621\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ada543459cab7f653dcacdaba4011a8bb19c627c\",\"lessThan\":\"6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ada543459cab7f653dcacdaba4011a8bb19c627c\",\"lessThan\":\"e1028fb38b328084bc683a4efb001c95d3108573\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ada543459cab7f653dcacdaba4011a8bb19c627c\",\"lessThan\":\"43c2e5c2acaae50e99d1c20a5a46e367c442fb3b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ada543459cab7f653dcacdaba4011a8bb19c627c\",\"lessThan\":\"866cf36bfee4fba6a492d2dcc5133f857e3446b0\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"arch/x86/events/amd/core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.160\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.120\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.64\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.3\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]},{\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP\",\"defaultStatus\":\"unknown\",\"versions\":[{\"version\":\"V3.1.6\",\"lessThan\":\"*\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/43c2e5c2acaae50e99d1c20a5a46e367c442fb3b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/49324a0c40f7e9bae1bd0362d23fc42232e14621\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/866cf36bfee4fba6a492d2dcc5133f857e3446b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e1028fb38b328084bc683a4efb001c95d3108573\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-019113.html\",\"source\":\"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:11:20+00:00",
      "cve": "CVE-2025-68798",
      "id": "CVE-2025-68798",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:known_affected": "260",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: perf/x86/amd: Check event before enable to avoid GPF",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68798.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-30T01:41:34Z",
      "cve": "CVE-2025-68798",
      "id": "CVE-2025-68798",
      "initial_release_date": "2026-01-15T00:26:06Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "396",
      "product_status:known_not_affected": "389",
      "product_status:recommended": "289",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-68798",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68798.json",
      "version": "31"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.