{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53101", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-05-02T15:51:43.553Z", "datePublished": "2025-05-02T15:55:43.804Z", "dateUpdated": "2026-05-11T19:38:32.982Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:38:32.982Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: zero i_disksize when initializing the bootloader inode\n\nIf the boot loader inode has never been used before, the\nEXT4_IOC_SWAP_BOOT inode will initialize it, including setting the\ni_size to 0. However, if the \"never before used\" boot loader has a\nnon-zero i_size, then i_disksize will be non-zero, and the\ninconsistency between i_size and i_disksize can trigger a kernel\nwarning:\n\n WARNING: CPU: 0 PID: 2580 at fs/ext4/file.c:319\n CPU: 0 PID: 2580 Comm: bb Not tainted 6.3.0-rc1-00004-g703695902cfa\n RIP: 0010:ext4_file_write_iter+0xbc7/0xd10\n Call Trace:\n vfs_write+0x3b1/0x5c0\n ksys_write+0x77/0x160\n __x64_sys_write+0x22/0x30\n do_syscall_64+0x39/0x80\n\nReproducer:\n 1. create corrupted image and mount it:\n mke2fs -t ext4 /tmp/foo.img 200\n debugfs -wR \"sif <5> size 25700\" /tmp/foo.img\n mount -t ext4 /tmp/foo.img /mnt\n cd /mnt\n echo 123 > file\n 2. Run the reproducer program:\n posix_memalign(&buf, 1024, 1024)\n fd = open(\"file\", O_RDWR | O_DIRECT);\n ioctl(fd, EXT4_IOC_SWAP_BOOT);\n write(fd, buf, 1024);\n\nFix this by setting i_disksize as well as i_size to zero when\ninitiaizing the boot loader inode." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/ioctl.c" ], "versions": [ { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "d6c1447e483c05dbcfb3ff77ac04237a82070b8c", "status": "affected", "versionType": "git" }, { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "59eee0cdf8c036f554add97a4da7c06d7a9ff34a", "status": "affected", "versionType": "git" }, { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "0d8a6c9a6415999fee1259ccf1796480c026b7d6", "status": "affected", "versionType": "git" }, { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "3f00c476da8fe7c4c34ea16abb55d74127120413", "status": "affected", "versionType": "git" }, { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "01a821aacc64d4b05dafd239dbc9b7856686002f", "status": "affected", "versionType": "git" }, { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "9cb27b1e76f0cc886ac09055bc41c0ab3f205167", "status": "affected", "versionType": "git" }, { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "9e9a4cc5486356158554f6ad73027d8635a48b34", "status": "affected", "versionType": "git" }, { "version": "393d1d1d76933886d5e1ce603214c9987589c6d5", "lessThan": "f5361da1e60d54ec81346aee8e3d8baf1be0b762", "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/ioctl.c" ], "versions": [ { "version": "3.10", "status": "affected" }, { "version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.310", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.278", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.237", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.175", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.103", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.20", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.7", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3", "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": "3.10", "versionEndExcluding": "4.14.310" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "4.19.278" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.4.237" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.10.175" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "5.15.103" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.1.20" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.2.7" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/d6c1447e483c05dbcfb3ff77ac04237a82070b8c" }, { "url": "https://git.kernel.org/stable/c/59eee0cdf8c036f554add97a4da7c06d7a9ff34a" }, { "url": "https://git.kernel.org/stable/c/0d8a6c9a6415999fee1259ccf1796480c026b7d6" }, { "url": "https://git.kernel.org/stable/c/3f00c476da8fe7c4c34ea16abb55d74127120413" }, { "url": "https://git.kernel.org/stable/c/01a821aacc64d4b05dafd239dbc9b7856686002f" }, { "url": "https://git.kernel.org/stable/c/9cb27b1e76f0cc886ac09055bc41c0ab3f205167" }, { "url": "https://git.kernel.org/stable/c/9e9a4cc5486356158554f6ad73027d8635a48b34" }, { "url": "https://git.kernel.org/stable/c/f5361da1e60d54ec81346aee8e3d8baf1be0b762" } ], "title": "ext4: zero i_disksize when initializing the bootloader inode", "x_generator": { "engine": "bippy-1.2.0" } } } }