{"dataType": "CVE_RECORD", "dataVersion": "5.1", "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": "2025-05-04T07:49:52.100Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-05-04T07:49:52.100Z"}, "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": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "d6c1447e483c05dbcfb3ff77ac04237a82070b8c", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "59eee0cdf8c036f554add97a4da7c06d7a9ff34a", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "0d8a6c9a6415999fee1259ccf1796480c026b7d6", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "3f00c476da8fe7c4c34ea16abb55d74127120413", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "01a821aacc64d4b05dafd239dbc9b7856686002f", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9cb27b1e76f0cc886ac09055bc41c0ab3f205167", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "lessThan": "9e9a4cc5486356158554f6ad73027d8635a48b34", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "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": "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:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.14.310"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.19.278"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.4.237"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.10.175"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.15.103"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.1.20"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionEndExcluding": "6.2.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "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"}}}}

{}

{"cveTags": [], "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."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: i_disksize cero al inicializar el inodo del cargador de arranque. Si el inodo del cargador de arranque nunca se ha usado antes, el inodo EXT4_IOC_SWAP_BOOT lo inicializar\u00e1, incluyendo el establecimiento de i_size a 0. Sin embargo, si el cargador de arranque \"nunca usado antes\" tiene un i_size distinto de cero, entonces i_disksize ser\u00e1 distinto de cero, y la inconsistencia entre i_size e i_disksize puede activar una advertencia del kernel: ADVERTENCIA: CPU: 0 PID: 2580 en fs/ext4/file.c:319 CPU: 0 PID: 2580 Comm: bb No contaminado 6.3.0-rc1-00004-g703695902cfa RIP: 0010:ext4_file_write_iter+0xbc7/0xd10 Rastreo de llamadas: vfs_write+0x3b1/0x5c0 ksys_write+0x77/0x160 __x64_sys_write+0x22/0x30 do_syscall_64+0x39/0x80 Reproductor: 1. crear una imagen da\u00f1ada y montarla: mke2fs -t ext4 /tmp/foo.img 200 debugfs -wR \"sif &lt;5&gt; size 25700\" /tmp/foo.img mount -t ext4 /tmp/foo.img /mnt cd /mnt echo 123 &gt; file 2. Ejecutar el programa reproductor: posix_memalign(&amp;buf, 1024, 1024) fd = open(\"file\", O_RDWR | Solucione esto configurando i_disksize e i_size en cero al iniciar el inodo del cargador de arranque."}], "id": "CVE-2023-53101", "lastModified": "2025-05-05T20:54:45.973", "metrics": {}, "published": "2025-05-02T16:15:29.023", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/01a821aacc64d4b05dafd239dbc9b7856686002f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0d8a6c9a6415999fee1259ccf1796480c026b7d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f00c476da8fe7c4c34ea16abb55d74127120413"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/59eee0cdf8c036f554add97a4da7c06d7a9ff34a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9cb27b1e76f0cc886ac09055bc41c0ab3f205167"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9e9a4cc5486356158554f6ad73027d8635a48b34"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d6c1447e483c05dbcfb3ff77ac04237a82070b8c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f5361da1e60d54ec81346aee8e3d8baf1be0b762"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: ext4: zero i_disksize when initializing the bootloader inode", "id": "2363759", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2363759"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\next4: zero i_disksize when initializing the bootloader inode\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:\nWARNING: CPU: 0 PID: 2580 at fs/ext4/file.c:319\nCPU: 0 PID: 2580 Comm: bb Not tainted 6.3.0-rc1-00004-g703695902cfa\nRIP: 0010:ext4_file_write_iter+0xbc7/0xd10\nCall Trace:\nvfs_write+0x3b1/0x5c0\nksys_write+0x77/0x160\n__x64_sys_write+0x22/0x30\ndo_syscall_64+0x39/0x80\nReproducer:\n1. create corrupted image and mount it:\nmke2fs -t ext4 /tmp/foo.img 200\ndebugfs -wR \"sif <5> size 25700\" /tmp/foo.img\nmount -t ext4 /tmp/foo.img /mnt\ncd /mnt\necho 123 > file\n2. Run the reproducer program:\nposix_memalign(&buf, 1024, 1024)\nfd = open(\"file\", O_RDWR | O_DIRECT);\nioctl(fd, EXT4_IOC_SWAP_BOOT);\nwrite(fd, buf, 1024);\nFix this by setting i_disksize as well as i_size to zero when\ninitiaizing the boot loader inode."], "name": "CVE-2023-53101", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-05-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-53101\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53101\nhttps://lore.kernel.org/linux-cve-announce/2025050224-CVE-2023-53101-3002@gregkh/T"], "statement": "Issue in EXT4_IOC_SWAP_BOOT where i_disksize may remain inconsistent, causing a kernel warning on crafted ext4 images. Requires root access and manual filesystem manipulation. No security impact in real-world scenarios.", "threat_severity": "Moderate"}