{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49707", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:21:30.444Z", "datePublished": "2025-02-26T02:24:25.441Z", "dateUpdated": "2026-05-11T19:05:11.366Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:05:11.366Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: add reserved GDT blocks check\n\nWe capture a NULL pointer issue when resizing a corrupt ext4 image which\nis freshly clear resize_inode feature (not run e2fsck). It could be\nsimply reproduced by following steps. The problem is because of the\nresize_inode feature was cleared, and it will convert the filesystem to\nmeta_bg mode in ext4_resize_fs(), but the es->s_reserved_gdt_blocks was\nnot reduced to zero, so could we mistakenly call reserve_backup_gdb()\nand passing an uninitialized resize_inode to it when adding new group\ndescriptors.\n\n mkfs.ext4 /dev/sda 3G\n tune2fs -O ^resize_inode /dev/sda #forget to run requested e2fsck\n mount /dev/sda /mnt\n resize2fs /dev/sda 8G\n\n ========\n BUG: kernel NULL pointer dereference, address: 0000000000000028\n CPU: 19 PID: 3243 Comm: resize2fs Not tainted 5.18.0-rc7-00001-gfde086c5ebfd #748\n ...\n RIP: 0010:ext4_flex_group_add+0xe08/0x2570\n ...\n Call Trace:\n \n ext4_resize_fs+0xbec/0x1660\n __ext4_ioctl+0x1749/0x24e0\n ext4_ioctl+0x12/0x20\n __x64_sys_ioctl+0xa6/0x110\n do_syscall_64+0x3b/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n RIP: 0033:0x7f2dd739617b\n ========\n\nThe fix is simple, add a check in ext4_resize_begin() to make sure that\nthe es->s_reserved_gdt_blocks is zero when the resize_inode feature is\ndisabled." } ], "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": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "0dc2fca8e4f9ac4a40e8424a10163369cca0cc06", "status": "affected", "versionType": "git" }, { "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "7c921328ac760bba780bdace41f4cd045f7f1405", "status": "affected", "versionType": "git" }, { "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "b9747263b13e5290ac4d63bec47e38f701303cad", "status": "affected", "versionType": "git" }, { "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "fba54289176702a7caac0b64738406775817f451", "status": "affected", "versionType": "git" }, { "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "bfd004a1d3a062aac300523d406ac1f3e5f1a82c", "status": "affected", "versionType": "git" }, { "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "33b1bba31f4c784d33d2c2517964bdccdc9204cd", "status": "affected", "versionType": "git" }, { "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "af75c481a2e45e70f62f5942c93695e95bf7bd21", "status": "affected", "versionType": "git" }, { "version": "1c6bd7173d66b3dfdefcedb38cabc1fb03997509", "lessThan": "b55c3cd102a6f48b90e61c44f7f3dda8c290c694", "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": "3.7", "status": "affected" }, { "version": "0", "lessThan": "3.7", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.320", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.285", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.249", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.200", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.124", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.49", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.6", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "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": "3.7", "versionEndExcluding": "4.9.320" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "4.14.285" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "4.19.249" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.4.200" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.10.124" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.15.49" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.18.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0dc2fca8e4f9ac4a40e8424a10163369cca0cc06" }, { "url": "https://git.kernel.org/stable/c/7c921328ac760bba780bdace41f4cd045f7f1405" }, { "url": "https://git.kernel.org/stable/c/b9747263b13e5290ac4d63bec47e38f701303cad" }, { "url": "https://git.kernel.org/stable/c/fba54289176702a7caac0b64738406775817f451" }, { "url": "https://git.kernel.org/stable/c/bfd004a1d3a062aac300523d406ac1f3e5f1a82c" }, { "url": "https://git.kernel.org/stable/c/33b1bba31f4c784d33d2c2517964bdccdc9204cd" }, { "url": "https://git.kernel.org/stable/c/af75c481a2e45e70f62f5942c93695e95bf7bd21" }, { "url": "https://git.kernel.org/stable/c/b55c3cd102a6f48b90e61c44f7f3dda8c290c694" } ], "title": "ext4: add reserved GDT blocks check", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49707", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2025-10-01T19:32:29.329505Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:36:45.352Z" } } ] } }