{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-26884", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix hashtab overflow check on 32-bit arches\n\nThe hashtab code relies on roundup_pow_of_two() to compute the number of\nhash buckets, and contains an overflow check by checking if the\nresulting value is 0. However, on 32-bit arches, the roundup code itself\ncan overflow by doing a 32-bit left-shift of an unsigned long value,\nwhich is undefined behaviour, so it is not guaranteed to truncate\nneatly. This was triggered by syzbot on the DEVMAP_HASH type, which\ncontains the same check, copied from the hashtab code. So apply the same\nfix to hashtab, by moving the overflow check to before the roundup." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "daaf427c6ab3", "version_value": "33ec04cadb77" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "3.19", "status": "affected" }, { "version": "0", "lessThan": "3.19", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.311", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.273", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/33ec04cadb77605b71d9298311919303d390c4d5", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/33ec04cadb77605b71d9298311919303d390c4d5" }, { "url": "https://git.kernel.org/stable/c/92c81fbb3ed2e0dfc33a4183a67135e1ab566ace", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/92c81fbb3ed2e0dfc33a4183a67135e1ab566ace" }, { "url": "https://git.kernel.org/stable/c/64f00b4df0597590b199b62a37a165473bf658a6", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/64f00b4df0597590b199b62a37a165473bf658a6" }, { "url": "https://git.kernel.org/stable/c/3b08cfc65f07b1132c1979d73f014ae6e04de55d", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/3b08cfc65f07b1132c1979d73f014ae6e04de55d" }, { "url": "https://git.kernel.org/stable/c/a83fdaeaea3677b83a53f72ace2d73a19bcd6d93", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/a83fdaeaea3677b83a53f72ace2d73a19bcd6d93" }, { "url": "https://git.kernel.org/stable/c/8435f0961bf3dc65e204094349bd9aeaac1f8868", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/8435f0961bf3dc65e204094349bd9aeaac1f8868" }, { "url": "https://git.kernel.org/stable/c/d817f0d34d927f2deb17dadbfe212c9a6a32ac3e", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/d817f0d34d927f2deb17dadbfe212c9a6a32ac3e" }, { "url": "https://git.kernel.org/stable/c/a6fa75b5096c0f9826a4fabe22d907b0a5bb1016", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/a6fa75b5096c0f9826a4fabe22d907b0a5bb1016" }, { "url": "https://git.kernel.org/stable/c/6787d916c2cf9850c97a0a3f73e08c43e7d973b1", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/6787d916c2cf9850c97a0a3f73e08c43e7d973b1" } ] }, "generator": { "engine": "bippy-9e1c9544281a" } }