{"id":"CVE-2026-45948","state":"PUBLISHED","title":"ext4: fix memory leak in ext4_ext_shift_extents()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leak in ext4_ext_shift_extents()\n\nIn ext4_ext_shift_extents(), if the extent is NULL in the while loop, the\nfunction returns immediately without releasing the path obtained via\next4_find_extent(), leading to a memory leak.\n\nFix this by jumping to the out label to ensure the path is properly\nreleased.","publishedAt":"2026-05-27T12:18:04.937Z","updatedAt":"2026-05-27T12:18:04.937Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"7e807cb8603b7664fa630a696cd891d9a03c248d","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"afc5e61e1a07b2b833bd72cbee36ecce9cd901e2","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"1bce219ee5512cf179ba40cf114945a14a16e21f","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"4a79fde8db7eba7f1128d971ceba4e3c9ac84aec","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"2f4b1052246ca646bb17bfe0f53df2fdf9729b58","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"12615ab4bfb69678e5d961b28bb70040299e51b1","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"bd7b52557e4a3ccd7595fdb3a585f1257de57935","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"ca81109d4a8f192dc1cbad4a1ee25246363c2833","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/extents.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.15","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/extents.c"]}],"references":["https://git.kernel.org/stable/c/7e807cb8603b7664fa630a696cd891d9a03c248d","https://git.kernel.org/stable/c/afc5e61e1a07b2b833bd72cbee36ecce9cd901e2","https://git.kernel.org/stable/c/1bce219ee5512cf179ba40cf114945a14a16e21f","https://git.kernel.org/stable/c/4a79fde8db7eba7f1128d971ceba4e3c9ac84aec","https://git.kernel.org/stable/c/2f4b1052246ca646bb17bfe0f53df2fdf9729b58","https://git.kernel.org/stable/c/12615ab4bfb69678e5d961b28bb70040299e51b1","https://git.kernel.org/stable/c/bd7b52557e4a3ccd7595fdb3a585f1257de57935","https://git.kernel.org/stable/c/ca81109d4a8f192dc1cbad4a1ee25246363c2833"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45948.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45948","state":"PUBLISHED","datePublished":"2026-05-27T12:18:04.937Z","dateUpdated":"2026-05-27T12:18:04.937Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-13T15:03:33.088Z"},"containers":{"cna":{"title":"ext4: fix memory leak in ext4_ext_shift_extents()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix memory leak in ext4_ext_shift_extents()\n\nIn ext4_ext_shift_extents(), if the extent is NULL in the while loop, the\nfunction returns immediately without releasing the path obtained via\next4_find_extent(), leading to a memory leak.\n\nFix this by jumping to the out label to ensure the path is properly\nreleased."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"7e807cb8603b7664fa630a696cd891d9a03c248d","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"afc5e61e1a07b2b833bd72cbee36ecce9cd901e2","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"1bce219ee5512cf179ba40cf114945a14a16e21f","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"4a79fde8db7eba7f1128d971ceba4e3c9ac84aec","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"2f4b1052246ca646bb17bfe0f53df2fdf9729b58","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"12615ab4bfb69678e5d961b28bb70040299e51b1","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"bd7b52557e4a3ccd7595fdb3a585f1257de57935","versionType":"git"},{"version":"a18ed359bdddcded4f97ff5e2f07793ff9336913","status":"affected","lessThan":"ca81109d4a8f192dc1cbad4a1ee25246363c2833","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/extents.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.15","versionType":"semver"},{"version":"5.10.252","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.202","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.165","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.128","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.75","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.14","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.4","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/extents.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7e807cb8603b7664fa630a696cd891d9a03c248d"},{"url":"https://git.kernel.org/stable/c/afc5e61e1a07b2b833bd72cbee36ecce9cd901e2"},{"url":"https://git.kernel.org/stable/c/1bce219ee5512cf179ba40cf114945a14a16e21f"},{"url":"https://git.kernel.org/stable/c/4a79fde8db7eba7f1128d971ceba4e3c9ac84aec"},{"url":"https://git.kernel.org/stable/c/2f4b1052246ca646bb17bfe0f53df2fdf9729b58"},{"url":"https://git.kernel.org/stable/c/12615ab4bfb69678e5d961b28bb70040299e51b1"},{"url":"https://git.kernel.org/stable/c/bd7b52557e4a3ccd7595fdb3a585f1257de57935"},{"url":"https://git.kernel.org/stable/c/ca81109d4a8f192dc1cbad4a1ee25246363c2833"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-27T12:18:04.937Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"5.10.252"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"5.15.202"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.1.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.6.128"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.12.75"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.18.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"6.19.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.15","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}