{"id":"CVE-2026-89879","revision":"537cd6a6e71c436eb2e809ec3e337f37","records":[{"revision":"537cd6a6e71c436eb2e809ec3e337f37","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89879","aliases":[],"title":"media: s2255: bound JPEG frame size before copying into the buffer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: s2255: bound JPEG frame size before copying into the buffer\n\ns2255_fillbuff() memcpy()s vc->jpg_size bytes of a captured JPEG/MJPEG\nframe into the vb2 plane.  vc->jpg_size is taken verbatim from the\nS2255_MARKER_FRAME header the device sends (pdword[4] in save_frame())\nand, unlike the frame payload length just above it, is never bounded:\n\n\tpayload = le32_to_cpu(pdword[3]);\n\tif (payload > vc->req_image_size)\t/* payload is checked ... */\n\t\treturn -EINVAL;\n\tvc->pkt_size = payload;\n\tvc->jpg_size = le32_to_cpu(pdword[4]);\t/* ... jpg_size is not */\n\nA malicious or malfunctioning device can therefore report a jpg_size\nlarger than the destination vb2 plane, and the memcpy() writes past it.\njpg_size is a signed int, so a value with the top bit set also turns\ninto a huge length.\n\nReject a frame whose jpg_size is negative or exceeds the plane size\nbefore copying it.","state":0,"publishedAt":"2026-09-16T10:31:45.564+00:00","modifiedAt":"2026-10-19T08:54:12.05+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/usb/s2255/s2255drv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"32a595dd3e8634544e5cfbc47f906dff3d3c1ef8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"4b6f7bccc6559ae5c54573c284fe76eafc9989b2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"2542516a147bfad740e7e411c251b639fad260ff\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"d2ecaaab6a4f165abb54cdf61be60030b5782bf8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"68d664f1b4efe525e99154b7058fcb0378bdaff7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"dd739517560c8d0ec4463a53e717bf40b988d7da\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7\",\n                            \"lessThan\": \"e504cc888f42999dd76b6a43788c422610f2aad2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/media/usb/s2255/s2255drv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.27\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.27\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/32a595dd3e8634544e5cfbc47f906dff3d3c1ef8","https://git.kernel.org/stable/c/4b6f7bccc6559ae5c54573c284fe76eafc9989b2","https://git.kernel.org/stable/c/2542516a147bfad740e7e411c251b639fad260ff","https://git.kernel.org/stable/c/79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77","https://git.kernel.org/stable/c/d2ecaaab6a4f165abb54cdf61be60030b5782bf8","https://git.kernel.org/stable/c/68d664f1b4efe525e99154b7058fcb0378bdaff7","https://git.kernel.org/stable/c/dd739517560c8d0ec4463a53e717bf40b988d7da","https://git.kernel.org/stable/c/e504cc888f42999dd76b6a43788c422610f2aad2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89879","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89879","identifiers":["CVE-2026-89879"]},"retained":false,"historicalAffected":[]}],"coverage":[]}