{"id":"CVE-2026-89878","state":"PUBLISHED","title":"media: s2255: check firmware size before reading trailing marker","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: s2255: check firmware size before reading trailing marker\n\ns2255_probe() reads a 4-byte marker and version from the last 8 bytes\nof the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the\nfirmware file is shorter than 8 bytes, fw_size - 8 underflows and the\naccess reads out of bounds. Validate the firmware size before indexing.","publishedAt":"2026-09-16T10:31:44.876Z","updatedAt":"2026-10-19T08:54:11.089Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"6f6a5b0b0a84c2de0e152f2841e57bc226db924f","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"8eca0f85eeb0789be40e637bcf9a21c4265b6c6f","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"ffc27411ea60b8a09f1fea3d664b65210fdeb454","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"5626785b0e4665326e4d96736c106161da09b2f0","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"342632a4d8ba3fafc1556deee0b7a48dd7860336","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"7d221859ba45d7228d0138c9a3e55bd3bb31e14e","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"330f2936ab768c7215322a476f033143e8891d28","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/s2255/s2255drv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.28","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.28","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/s2255/s2255drv.c"]}],"references":["https://git.kernel.org/stable/c/6f6a5b0b0a84c2de0e152f2841e57bc226db924f","https://git.kernel.org/stable/c/8eca0f85eeb0789be40e637bcf9a21c4265b6c6f","https://git.kernel.org/stable/c/ffc27411ea60b8a09f1fea3d664b65210fdeb454","https://git.kernel.org/stable/c/5626785b0e4665326e4d96736c106161da09b2f0","https://git.kernel.org/stable/c/3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d","https://git.kernel.org/stable/c/342632a4d8ba3fafc1556deee0b7a48dd7860336","https://git.kernel.org/stable/c/7d221859ba45d7228d0138c9a3e55bd3bb31e14e","https://git.kernel.org/stable/c/330f2936ab768c7215322a476f033143e8891d28"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89878.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89878","state":"PUBLISHED","datePublished":"2026-09-16T10:31:44.876Z","dateUpdated":"2026-10-19T08:54:11.089Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.772Z"},"containers":{"cna":{"title":"media: s2255: check firmware size before reading trailing marker","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: s2255: check firmware size before reading trailing marker\n\ns2255_probe() reads a 4-byte marker and version from the last 8 bytes\nof the firmware blob (fw->data[fw_size - 8] and [fw_size - 4]). If the\nfirmware file is shorter than 8 bytes, fw_size - 8 underflows and the\naccess reads out of bounds. Validate the firmware size before indexing."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"6f6a5b0b0a84c2de0e152f2841e57bc226db924f","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"8eca0f85eeb0789be40e637bcf9a21c4265b6c6f","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"ffc27411ea60b8a09f1fea3d664b65210fdeb454","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"5626785b0e4665326e4d96736c106161da09b2f0","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"342632a4d8ba3fafc1556deee0b7a48dd7860336","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"7d221859ba45d7228d0138c9a3e55bd3bb31e14e","versionType":"git"},{"version":"14d962602c8bf86e63c9b9272be1f0360d0a448a","status":"affected","lessThan":"330f2936ab768c7215322a476f033143e8891d28","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/s2255/s2255drv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.28","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.28","versionType":"semver"},{"version":"5.10.270","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.221","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.188","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.157","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.110","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.51","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.5","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/media/usb/s2255/s2255drv.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6f6a5b0b0a84c2de0e152f2841e57bc226db924f"},{"url":"https://git.kernel.org/stable/c/8eca0f85eeb0789be40e637bcf9a21c4265b6c6f"},{"url":"https://git.kernel.org/stable/c/ffc27411ea60b8a09f1fea3d664b65210fdeb454"},{"url":"https://git.kernel.org/stable/c/5626785b0e4665326e4d96736c106161da09b2f0"},{"url":"https://git.kernel.org/stable/c/3e03f1209c1c8a45a7bc559f4ecd79d9b33f706d"},{"url":"https://git.kernel.org/stable/c/342632a4d8ba3fafc1556deee0b7a48dd7860336"},{"url":"https://git.kernel.org/stable/c/7d221859ba45d7228d0138c9a3e55bd3bb31e14e"},{"url":"https://git.kernel.org/stable/c/330f2936ab768c7215322a476f033143e8891d28"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:54:11.089Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.28","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}