{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2023-52622","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-03-06T09:52:12.090Z","datePublished":"2024-03-26T17:19:23.838Z","dateUpdated":"2026-05-11T19:30:32.665Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:30:32.665Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: avoid online resizing failures due to oversized flex bg\n\nWhen we online resize an ext4 filesystem with a oversized flexbg_size,\n\n     mkfs.ext4 -F -G 67108864 $dev -b 4096 100M\n     mount $dev $dir\n     resize2fs $dev 16G\n\nthe following WARN_ON is triggered:\n==================================================================\nWARNING: CPU: 0 PID: 427 at mm/page_alloc.c:4402 __alloc_pages+0x411/0x550\nModules linked in: sg(E)\nCPU: 0 PID: 427 Comm: resize2fs Tainted: G  E  6.6.0-rc5+ #314\nRIP: 0010:__alloc_pages+0x411/0x550\nCall Trace:\n <TASK>\n __kmalloc_large_node+0xa2/0x200\n __kmalloc+0x16e/0x290\n ext4_resize_fs+0x481/0xd80\n __ext4_ioctl+0x1616/0x1d90\n ext4_ioctl+0x12/0x20\n __x64_sys_ioctl+0xf0/0x150\n do_syscall_64+0x3b/0x90\n==================================================================\n\nThis is because flexbg_size is too large and the size of the new_group_data\narray to be allocated exceeds MAX_ORDER. Currently, the minimum value of\nMAX_ORDER is 8, the minimum value of PAGE_SIZE is 4096, the corresponding\nmaximum number of groups that can be allocated is:\n\n (PAGE_SIZE << MAX_ORDER) / sizeof(struct ext4_new_group_data) ≈ 21845\n\nAnd the value that is down-aligned to the power of 2 is 16384. Therefore,\nthis value is defined as MAX_RESIZE_BG, and the number of groups added\neach time does not exceed this value during resizing, and is added multiple\ntimes to complete the online resizing. The difference is that the metadata\nin a flex_bg may be more dispersed."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/resize.c"],"versions":[{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"cd1f93ca97a9136989f3bd2bf90696732a2ed644","status":"affected","versionType":"git"},{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"b183fe8702e78bba3dcef8e7193cab6898abee07","status":"affected","versionType":"git"},{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"cfbbb3199e71b63fc26cee0ebff327c47128a1e8","status":"affected","versionType":"git"},{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"d76c8d7ffe163c6bf2f1ef680b0539c2b3902b90","status":"affected","versionType":"git"},{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"6d2cbf517dcabc093159cf138ad5712c9c7fa954","status":"affected","versionType":"git"},{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"8b1413dbfe49646eda2c00c0f1144ee9d3368e0c","status":"affected","versionType":"git"},{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"dc3e0f55bec4410f3d74352c4a7c79f518088ee2","status":"affected","versionType":"git"},{"version":"28c7bac0091687e6116ebd6c179e154ae4053c90","lessThan":"5d1935ac02ca5aee364a449a35e2977ea84509b0","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ext4/resize.c"],"versions":[{"version":"3.3","status":"affected"},{"version":"0","lessThan":"3.3","status":"unaffected","versionType":"semver"},{"version":"4.19.307","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.269","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.210","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.149","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.77","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.16","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.4","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"4.19.307"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.4.269"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.10.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"5.15.149"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.1.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.6.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.7.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.3","versionEndExcluding":"6.8"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/cd1f93ca97a9136989f3bd2bf90696732a2ed644"},{"url":"https://git.kernel.org/stable/c/b183fe8702e78bba3dcef8e7193cab6898abee07"},{"url":"https://git.kernel.org/stable/c/cfbbb3199e71b63fc26cee0ebff327c47128a1e8"},{"url":"https://git.kernel.org/stable/c/d76c8d7ffe163c6bf2f1ef680b0539c2b3902b90"},{"url":"https://git.kernel.org/stable/c/6d2cbf517dcabc093159cf138ad5712c9c7fa954"},{"url":"https://git.kernel.org/stable/c/8b1413dbfe49646eda2c00c0f1144ee9d3368e0c"},{"url":"https://git.kernel.org/stable/c/dc3e0f55bec4410f3d74352c4a7c79f518088ee2"},{"url":"https://git.kernel.org/stable/c/5d1935ac02ca5aee364a449a35e2977ea84509b0"}],"title":"ext4: avoid online resizing failures due to oversized flex bg","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-09T19:32:18.763669Z","id":"CVE-2023-52622","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-07-09T19:32:30.135Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T23:03:21.365Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/cd1f93ca97a9136989f3bd2bf90696732a2ed644","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/b183fe8702e78bba3dcef8e7193cab6898abee07","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/cfbbb3199e71b63fc26cee0ebff327c47128a1e8","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/d76c8d7ffe163c6bf2f1ef680b0539c2b3902b90","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/6d2cbf517dcabc093159cf138ad5712c9c7fa954","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/8b1413dbfe49646eda2c00c0f1144ee9d3368e0c","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/dc3e0f55bec4410f3d74352c4a7c79f518088ee2","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/5d1935ac02ca5aee364a449a35e2977ea84509b0","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html","tags":["x_transferred"]}]}]},"dataVersion":"5.2"}