{"id":"CVE-2025-68798","state":"PUBLISHED","title":"perf/x86/amd: Check event before enable to avoid GPF","description":"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->events[idx] can become NULL in a subtle race\ncondition with NMI->throttle->x86_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 <IRQ>\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 </IRQ>","publishedAt":"2026-01-13T15:29:08.329Z","updatedAt":"2026-10-15T01:10:15.720Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"49324a0c40f7e9bae1bd0362d23fc42232e14621","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"e1028fb38b328084bc683a4efb001c95d3108573","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"43c2e5c2acaae50e99d1c20a5a46e367c442fb3b","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"866cf36bfee4fba6a492d2dcc5133f857e3446b0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/events/amd/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","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":["arch/x86/events/amd/core.c"]}],"references":["https://git.kernel.org/stable/c/49324a0c40f7e9bae1bd0362d23fc42232e14621","https://git.kernel.org/stable/c/6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f","https://git.kernel.org/stable/c/e1028fb38b328084bc683a4efb001c95d3108573","https://git.kernel.org/stable/c/43c2e5c2acaae50e99d1c20a5a46e367c442fb3b","https://git.kernel.org/stable/c/866cf36bfee4fba6a492d2dcc5133f857e3446b0","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68798.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68798","state":"PUBLISHED","datePublished":"2026-01-13T15:29:08.329Z","dateUpdated":"2026-10-15T01:10:15.720Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T10:30:51.042Z"},"containers":{"cna":{"title":"perf/x86/amd: Check event before enable to avoid GPF","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->events[idx] can become NULL in a subtle race\ncondition with NMI->throttle->x86_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 <IRQ>\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 </IRQ>"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"49324a0c40f7e9bae1bd0362d23fc42232e14621","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"6e41d9ec8d7cc3f01b9ba785e05f0ebef8b3b37f","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"e1028fb38b328084bc683a4efb001c95d3108573","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"43c2e5c2acaae50e99d1c20a5a46e367c442fb3b","versionType":"git"},{"version":"ada543459cab7f653dcacdaba4011a8bb19c627c","status":"affected","lessThan":"866cf36bfee4fba6a492d2dcc5133f857e3446b0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/events/amd/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.19","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.19","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","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":["arch/x86/events/amd/core.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:53:32.717Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.1.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.6.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC 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