{"id":"CVE-2023-54240","state":"PUBLISHED","title":"net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all()\n\nrule_locs is allocated in ethtool_get_rxnfc and the size is determined by\nrule_cnt from user space. So rule_cnt needs to be check before using\nrule_locs to avoid NULL pointer dereference.","publishedAt":"2025-12-30T12:11:29.039Z","updatedAt":"2026-05-11T19:58:09.830Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"7776591e5ae2befff86579f68916a171971c6aab","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"751b2e22a188b0c306029d094da29b6b8de31430","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"653fbddbdfc6673bba01b13dae5a4384ad8f92ec","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"75f2de75c1182e80708c932418e4895dbc88b68f","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"072324cfab9b96071c0782f51f53cc5aea1e9d5b","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"ff5faed5f5487b0fd2b640ba1304f82a5ebaab42","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"fe0195fe48f85182bc7e7eabcad925bd3cbc10f5","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"e4c79810755f66c9a933ca810da2724133b1165a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mediatek/mtk_eth_soc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"4.14.326","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.295","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.257","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.195","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.132","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.54","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.5.4","status":"unaffected","lessThanOrEqual":"6.5.*","versionType":"semver"},{"version":"6.6","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/mediatek/mtk_eth_soc.c"]}],"references":["https://git.kernel.org/stable/c/7776591e5ae2befff86579f68916a171971c6aab","https://git.kernel.org/stable/c/751b2e22a188b0c306029d094da29b6b8de31430","https://git.kernel.org/stable/c/653fbddbdfc6673bba01b13dae5a4384ad8f92ec","https://git.kernel.org/stable/c/75f2de75c1182e80708c932418e4895dbc88b68f","https://git.kernel.org/stable/c/072324cfab9b96071c0782f51f53cc5aea1e9d5b","https://git.kernel.org/stable/c/ff5faed5f5487b0fd2b640ba1304f82a5ebaab42","https://git.kernel.org/stable/c/fe0195fe48f85182bc7e7eabcad925bd3cbc10f5","https://git.kernel.org/stable/c/e4c79810755f66c9a933ca810da2724133b1165a"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:42.242Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/54xxx/CVE-2023-54240.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-54240","state":"PUBLISHED","datePublished":"2025-12-30T12:11:29.039Z","dateUpdated":"2026-05-11T19:58:09.830Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:44.509Z"},"containers":{"cna":{"title":"net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all()\n\nrule_locs is allocated in ethtool_get_rxnfc and the size is determined by\nrule_cnt from user space. So rule_cnt needs to be check before using\nrule_locs to avoid NULL pointer dereference."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"7776591e5ae2befff86579f68916a171971c6aab","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"751b2e22a188b0c306029d094da29b6b8de31430","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"653fbddbdfc6673bba01b13dae5a4384ad8f92ec","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"75f2de75c1182e80708c932418e4895dbc88b68f","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"072324cfab9b96071c0782f51f53cc5aea1e9d5b","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"ff5faed5f5487b0fd2b640ba1304f82a5ebaab42","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"fe0195fe48f85182bc7e7eabcad925bd3cbc10f5","versionType":"git"},{"version":"7aab747e5563ecbc9f3cb64ddea13fe7b9fee2bd","status":"affected","lessThan":"e4c79810755f66c9a933ca810da2724133b1165a","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/mediatek/mtk_eth_soc.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"4.14.326","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.295","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.257","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.195","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.132","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.54","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.5.4","status":"unaffected","lessThanOrEqual":"6.5.*","versionType":"semver"},{"version":"6.6","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/mediatek/mtk_eth_soc.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7776591e5ae2befff86579f68916a171971c6aab"},{"url":"https://git.kernel.org/stable/c/751b2e22a188b0c306029d094da29b6b8de31430"},{"url":"https://git.kernel.org/stable/c/653fbddbdfc6673bba01b13dae5a4384ad8f92ec"},{"url":"https://git.kernel.org/stable/c/75f2de75c1182e80708c932418e4895dbc88b68f"},{"url":"https://git.kernel.org/stable/c/072324cfab9b96071c0782f51f53cc5aea1e9d5b"},{"url":"https://git.kernel.org/stable/c/ff5faed5f5487b0fd2b640ba1304f82a5ebaab42"},{"url":"https://git.kernel.org/stable/c/fe0195fe48f85182bc7e7eabcad925bd3cbc10f5"},{"url":"https://git.kernel.org/stable/c/e4c79810755f66c9a933ca810da2724133b1165a"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:58:09.830Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"4.14.326"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"4.19.295"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.4.257"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.195"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.15.132"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.1.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.5.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.6"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}