{"id":"CVE-2026-53114","state":"PUBLISHED","title":"perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler\n\nCalling perf_allow_kernel() from the NMI context is unsafe and could be\nfatal. Capture the permission at event-initialization time by storing it\nin event->hw.flags, and have the NMI handler rely on that cached flag\ninstead of making the call directly.","publishedAt":"2026-06-24T16:30:46.662Z","updatedAt":"2026-06-24T16:30:46.662Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"50a53b60e141d7e31368a87e222e4dd5597bd4ae","status":"affected","lessThan":"2783ed2442ce69ae240b787aee6dae801cef7aec","versionType":"git"},{"version":"50a53b60e141d7e31368a87e222e4dd5597bd4ae","status":"affected","lessThan":"0584e74fa2b27e9e722cfb5b579f79263df20040","versionType":"git"},{"version":"50a53b60e141d7e31368a87e222e4dd5597bd4ae","status":"affected","lessThan":"b0a09142622a994c4f4088c3f61db5da87cfc711","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/events/amd/ibs.c","arch/x86/events/perf_event_flags.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","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/ibs.c","arch/x86/events/perf_event_flags.h"]}],"references":["https://git.kernel.org/stable/c/2783ed2442ce69ae240b787aee6dae801cef7aec","https://git.kernel.org/stable/c/0584e74fa2b27e9e722cfb5b579f79263df20040","https://git.kernel.org/stable/c/b0a09142622a994c4f4088c3f61db5da87cfc711"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:16.098Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53114.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53114","state":"PUBLISHED","datePublished":"2026-06-24T16:30:46.662Z","dateUpdated":"2026-06-24T16:30:46.662Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.385Z"},"containers":{"cna":{"title":"perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler\n\nCalling perf_allow_kernel() from the NMI context is unsafe and could be\nfatal. Capture the permission at event-initialization time by storing it\nin event->hw.flags, and have the NMI handler rely on that cached flag\ninstead of making the call directly."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"50a53b60e141d7e31368a87e222e4dd5597bd4ae","status":"affected","lessThan":"2783ed2442ce69ae240b787aee6dae801cef7aec","versionType":"git"},{"version":"50a53b60e141d7e31368a87e222e4dd5597bd4ae","status":"affected","lessThan":"0584e74fa2b27e9e722cfb5b579f79263df20040","versionType":"git"},{"version":"50a53b60e141d7e31368a87e222e4dd5597bd4ae","status":"affected","lessThan":"b0a09142622a994c4f4088c3f61db5da87cfc711","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/x86/events/amd/ibs.c","arch/x86/events/perf_event_flags.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.14","versionType":"semver"},{"version":"6.18.33","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.10","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","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/ibs.c","arch/x86/events/perf_event_flags.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/2783ed2442ce69ae240b787aee6dae801cef7aec"},{"url":"https://git.kernel.org/stable/c/0584e74fa2b27e9e722cfb5b579f79263df20040"},{"url":"https://git.kernel.org/stable/c/b0a09142622a994c4f4088c3f61db5da87cfc711"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-24T16:30:46.662Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}