{"id":"CVE-2026-74693","state":"PUBLISHED","title":"net: prestera: validate firmware header length","description":"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.","publishedAt":"2026-08-22T15:32:56.491Z","updatedAt":"2026-08-22T15:32:56.491Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"0fbcceb9d19f2d1dcdf099aee590f2517cb718bb","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"e0f382e8084117f0b11ffb070fe1079e38c0d7f9","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"6fad06bb793d7089ae05b9fcf46e11be2dfe4850","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"470ac9cce7308e60cf2dceb448749cdd006e73de","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"363e048a9d0a6c245cbc348c8a220170afed046a","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"7fa8a12296d8d5aa4b1c3904f0b354d81124cf29","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"8ae344eb540af3f457179b52bc6061416752485c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/prestera/prestera_pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.152","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.104","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.45","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.9","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/prestera/prestera_pci.c"]}],"references":["https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240","https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb","https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9","https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850","https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de","https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a","https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29","https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74693.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74693","state":"PUBLISHED","datePublished":"2026-08-22T15:32:56.491Z","dateUpdated":"2026-08-22T15:32:56.491Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.926Z"},"containers":{"cna":{"title":"net: prestera: validate firmware header length","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"0fbcceb9d19f2d1dcdf099aee590f2517cb718bb","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"e0f382e8084117f0b11ffb070fe1079e38c0d7f9","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"6fad06bb793d7089ae05b9fcf46e11be2dfe4850","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"470ac9cce7308e60cf2dceb448749cdd006e73de","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"363e048a9d0a6c245cbc348c8a220170afed046a","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"7fa8a12296d8d5aa4b1c3904f0b354d81124cf29","versionType":"git"},{"version":"4c2703dfd7fabb0824b3bc345f9fa47e33248c14","status":"affected","lessThan":"8ae344eb540af3f457179b52bc6061416752485c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/prestera/prestera_pci.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.10","versionType":"semver"},{"version":"5.10.265","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.216","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.183","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.152","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.104","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.45","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.9","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/marvell/prestera/prestera_pci.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-22T15:32:56.491Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}