CVE-2026-74693

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74693", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.926Z", "datePublished": "2026-08-22T15:32:56.491Z", "dateUpdated": "2026-08-22T15:32:56.491Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-22T15:32:56.491Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: prestera: validate firmware header length\n\nprestera_fw_hdr_parse() reads the firmware header before checking\nthat the firmware image contains that header.\n\nReject images shorter than struct prestera_fw_header before decoding the\nmagic and version fields."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/marvell/prestera/prestera_pci.c"], "versions": [{"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240", "status": "affected", "versionType": "git"}, {"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "0fbcceb9d19f2d1dcdf099aee590f2517cb718bb", "status": "affected", "versionType": "git"}, {"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "e0f382e8084117f0b11ffb070fe1079e38c0d7f9", "status": "affected", "versionType": "git"}, {"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "6fad06bb793d7089ae05b9fcf46e11be2dfe4850", "status": "affected", "versionType": "git"}, {"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "470ac9cce7308e60cf2dceb448749cdd006e73de", "status": "affected", "versionType": "git"}, {"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "363e048a9d0a6c245cbc348c8a220170afed046a", "status": "affected", "versionType": "git"}, {"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "7fa8a12296d8d5aa4b1c3904f0b354d81124cf29", "status": "affected", "versionType": "git"}, {"version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "lessThan": "8ae344eb540af3f457179b52bc6061416752485c", "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/net/ethernet/marvell/prestera/prestera_pci.c"], "versions": [{"version": "5.10", "status": "affected"}, {"version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.152", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.104", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.45", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.9", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.10", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.6.152"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.12.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "6.18.45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "7.1.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240"}, {"url": "https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb"}, {"url": "https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9"}, {"url": "https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850"}, {"url": "https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de"}, {"url": "https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a"}, {"url": "https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29"}, {"url": "https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c"}], "title": "net: prestera: validate firmware header length", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/prestera/prestera_pci.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}, {"lessThan": "0fbcceb9d19f2d1dcdf099aee590f2517cb718bb", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}, {"lessThan": "e0f382e8084117f0b11ffb070fe1079e38c0d7f9", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}, {"lessThan": "6fad06bb793d7089ae05b9fcf46e11be2dfe4850", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}, {"lessThan": "470ac9cce7308e60cf2dceb448749cdd006e73de", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}, {"lessThan": "363e048a9d0a6c245cbc348c8a220170afed046a", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}, {"lessThan": "7fa8a12296d8d5aa4b1c3904f0b354d81124cf29", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}, {"lessThan": "8ae344eb540af3f457179b52bc6061416752485c", "status": "affected", "version": "4c2703dfd7fabb0824b3bc345f9fa47e33248c14", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/prestera/prestera_pci.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.10"}, {"lessThan": "5.10", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.152", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.104", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nnet: prestera: validate firmware header length\n\nprestera_fw_hdr_parse() reads the firmware header before checking\nthat the firmware image contains that header.\n\nReject images shorter than struct prestera_fw_header before decoding the\nmagic and version fields."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnet: prestera: validar la longitud del encabezado del firmware\n\nprestera_fw_hdr_parse() lee el encabezado del firmware antes de verificar que la imagen del firmware contiene ese encabezado.\n\nRechazar im\u00e1genes m\u00e1s cortas que struct prestera_fw_header antes de decodificar los campos magic y version."}], "id": "CVE-2026-74693", "lastModified": "2026-10-14T13:10:00.187", "metrics": {}, "published": "2026-08-22T16:16:43.807", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: prestera: validate firmware header length", "id": "2521407", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2521407"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: prestera: validate firmware header length\nprestera_fw_hdr_parse() reads the firmware header before checking\nthat the firmware image contains that header.\nReject images shorter than struct prestera_fw_header before decoding the\nmagic and version fields.", "A flaw was found in the `prestera` network driver in the Linux kernel. The `prestera_fw_hdr_parse()` function reads the firmware header before checking that the firmware image contains the entire header. This oversight could allow a local attacker to provide a specially crafted, malformed firmware image, potentially leading to a denial of service (DoS) by causing the system to crash or become unstable."], "name": "CVE-2026-74693", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74693\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74693\nhttps://lore.kernel.org/linux-cve-announce/2026082234-CVE-2026-74693-ba3f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,0fbcceb9d19f2d1dcdf099aee590f2517cb718bb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,e0f382e8084117f0b11ffb070fe1079e38c0d7f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,6fad06bb793d7089ae05b9fcf46e11be2dfe4850)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,470ac9cce7308e60cf2dceb448749cdd006e73de)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,363e048a9d0a6c245cbc348c8a220170afed046a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,7fa8a12296d8d5aa4b1c3904f0b354d81124cf29)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[4c2703dfd7fabb0824b3bc345f9fa47e33248c14,8ae344eb540af3f457179b52bc6061416752485c)"}}], "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": "generic", "value": "5.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.265,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.216,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.183,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.152,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.104,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.45,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.9,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "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": "2026-08-22T18:15:03.690709+00:00", "updated": "2026-08-25T21:45:03.473219+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}