CVE-2026-90274

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90274", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.797Z", "datePublished": "2026-09-17T16:08:07.269Z", "dateUpdated": "2026-10-19T09:00:51.909Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:00:51.909Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: etm4x: fix underflow for usage of (nrseqstate - 1)\n\nAccording to IHI006H Embedded Trace Macrocell Architecture\nSpecification[0], TRCSEQEVR<n> is implemented only when\nTRCIDR5.NUMSEQSTATE is 0b100, in which case n ranges from 0 to 2;\notherwise, TRCIDR5.NUMSEQSTATE is 0b000.\n\nIOW, the number of usage in the initialisation or setting\nTRCSEQEVR<n> with drvdata->nrseqstate - 1 in the loop could make\nunderflow issue when TRCIDR5.NUMSEQSTATE is 0b000.\n\nTherefore, introduce nr_seq_ctrls field and untie it from nrseqstate.\nAs part of this introduce ETM_MAX_SEQ_TRANSITIONS macro and\napply nr_seq_ctrls and above macro to TRCSEQEVR<n> relevant fields setup."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hwtracing/coresight/coresight-etm4x-cfg.c", "drivers/hwtracing/coresight/coresight-etm4x-core.c", "drivers/hwtracing/coresight/coresight-etm4x-sysfs.c", "drivers/hwtracing/coresight/coresight-etm4x.h"], "versions": [{"version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "lessThan": "8d669db59f7283b838e029af29da12e505265fae", "status": "affected", "versionType": "git"}, {"version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "lessThan": "4091f2d5b26d117c992ffcce1a5df425a0daedcd", "status": "affected", "versionType": "git"}, {"version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "lessThan": "be7b2de5b9a96ae68ffa3528e0a40d63e0fd8148", "status": "affected", "versionType": "git"}, {"version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "lessThan": "4f9a0f548413bf864f609c9f4bc56e3f1b3577d4", "status": "affected", "versionType": "git"}, {"version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "lessThan": "1ade9a335c69fc735cb7b3f222ed35ab135540fb", "status": "affected", "versionType": "git"}, {"version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "lessThan": "5ac900f73ce1d4d8308f40752b51bc8a02b244d2", "status": "affected", "versionType": "git"}, {"version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "lessThan": "1674d9bff8073bdee5dbc200f56fc3caa28d0566", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/hwtracing/coresight/coresight-etm4x-cfg.c", "drivers/hwtracing/coresight/coresight-etm4x-core.c", "drivers/hwtracing/coresight/coresight-etm4x-sysfs.c", "drivers/hwtracing/coresight/coresight-etm4x.h"], "versions": [{"version": "4.2", "status": "affected"}, {"version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.15.221"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.1.188"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.6.157"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.12.110"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8d669db59f7283b838e029af29da12e505265fae"}, {"url": "https://git.kernel.org/stable/c/4091f2d5b26d117c992ffcce1a5df425a0daedcd"}, {"url": "https://git.kernel.org/stable/c/be7b2de5b9a96ae68ffa3528e0a40d63e0fd8148"}, {"url": "https://git.kernel.org/stable/c/4f9a0f548413bf864f609c9f4bc56e3f1b3577d4"}, {"url": "https://git.kernel.org/stable/c/1ade9a335c69fc735cb7b3f222ed35ab135540fb"}, {"url": "https://git.kernel.org/stable/c/5ac900f73ce1d4d8308f40752b51bc8a02b244d2"}, {"url": "https://git.kernel.org/stable/c/1674d9bff8073bdee5dbc200f56fc3caa28d0566"}], "title": "coresight: etm4x: fix underflow for usage of (nrseqstate - 1)", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/hwtracing/coresight/coresight-etm4x-cfg.c", "drivers/hwtracing/coresight/coresight-etm4x-core.c", "drivers/hwtracing/coresight/coresight-etm4x-sysfs.c", "drivers/hwtracing/coresight/coresight-etm4x.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8d669db59f7283b838e029af29da12e505265fae", "status": "affected", "version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "versionType": "git"}, {"lessThan": "4091f2d5b26d117c992ffcce1a5df425a0daedcd", "status": "affected", "version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "versionType": "git"}, {"lessThan": "be7b2de5b9a96ae68ffa3528e0a40d63e0fd8148", "status": "affected", "version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "versionType": "git"}, {"lessThan": "4f9a0f548413bf864f609c9f4bc56e3f1b3577d4", "status": "affected", "version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "versionType": "git"}, {"lessThan": "1ade9a335c69fc735cb7b3f222ed35ab135540fb", "status": "affected", "version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "versionType": "git"}, {"lessThan": "5ac900f73ce1d4d8308f40752b51bc8a02b244d2", "status": "affected", "version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "versionType": "git"}, {"lessThan": "1674d9bff8073bdee5dbc200f56fc3caa28d0566", "status": "affected", "version": "2e1cdfe184b5202d51e0611d7a051e2bea303946", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/hwtracing/coresight/coresight-etm4x-cfg.c", "drivers/hwtracing/coresight/coresight-etm4x-core.c", "drivers/hwtracing/coresight/coresight-etm4x-sysfs.c", "drivers/hwtracing/coresight/coresight-etm4x.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.2"}, {"lessThan": "4.2", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.221", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.188", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.157", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.110", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: etm4x: fix underflow for usage of (nrseqstate - 1)\n\nAccording to IHI006H Embedded Trace Macrocell Architecture\nSpecification[0], TRCSEQEVR<n> is implemented only when\nTRCIDR5.NUMSEQSTATE is 0b100, in which case n ranges from 0 to 2;\notherwise, TRCIDR5.NUMSEQSTATE is 0b000.\n\nIOW, the number of usage in the initialisation or setting\nTRCSEQEVR<n> with drvdata->nrseqstate - 1 in the loop could make\nunderflow issue when TRCIDR5.NUMSEQSTATE is 0b000.\n\nTherefore, introduce nr_seq_ctrls field and untie it from nrseqstate.\nAs part of this introduce ETM_MAX_SEQ_TRANSITIONS macro and\napply nr_seq_ctrls and above macro to TRCSEQEVR<n> relevant fields setup."}], "id": "CVE-2026-90274", "lastModified": "2026-10-19T09:19:20.947", "metrics": {}, "published": "2026-09-17T17:17:23.997", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1674d9bff8073bdee5dbc200f56fc3caa28d0566"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ade9a335c69fc735cb7b3f222ed35ab135540fb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4091f2d5b26d117c992ffcce1a5df425a0daedcd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4f9a0f548413bf864f609c9f4bc56e3f1b3577d4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5ac900f73ce1d4d8308f40752b51bc8a02b244d2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8d669db59f7283b838e029af29da12e505265fae"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/be7b2de5b9a96ae68ffa3528e0a40d63e0fd8148"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e1cdfe184b5202d51e0611d7a051e2bea303946,8d669db59f7283b838e029af29da12e505265fae)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e1cdfe184b5202d51e0611d7a051e2bea303946,4091f2d5b26d117c992ffcce1a5df425a0daedcd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e1cdfe184b5202d51e0611d7a051e2bea303946,be7b2de5b9a96ae68ffa3528e0a40d63e0fd8148)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e1cdfe184b5202d51e0611d7a051e2bea303946,4f9a0f548413bf864f609c9f4bc56e3f1b3577d4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e1cdfe184b5202d51e0611d7a051e2bea303946,1ade9a335c69fc735cb7b3f222ed35ab135540fb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e1cdfe184b5202d51e0611d7a051e2bea303946,5ac900f73ce1d4d8308f40752b51bc8a02b244d2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e1cdfe184b5202d51e0611d7a051e2bea303946,1674d9bff8073bdee5dbc200f56fc3caa28d0566)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.2"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.2)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.221,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.188,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-19T04:15:13.631605+00:00", "updated": "2026-09-20T02:15:17.046137+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-188", "CWE-787"]}