CVE-2024-42304— ext4: make sure the first directory block is not a hole
Affected Version Matrix 22
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3a17ca864baffc0c6f6e8aad525aa4365775a193< d81d7e347d1f1f48a5634607d39eb90c161c8afe | affected |
4e19d6b65fb4fc42e352ce9883649e049da14743< e02f9941e8c011aa3eafa799def6a134ce06bcfa | affected | ||
4e19d6b65fb4fc42e352ce9883649e049da14743< de2a011a13a46468a6e8259db58b1b62071fe136 | affected | ||
4e19d6b65fb4fc42e352ce9883649e049da14743< 9771e3d8365ae1dd5e8846a204cb9af14e3e656a | affected | ||
4e19d6b65fb4fc42e352ce9883649e049da14743< b609753cbbd38f8c0affd4956c0af178348523ac | affected | ||
4e19d6b65fb4fc42e352ce9883649e049da14743< c3893d9de8ee153baac56d127d844103488133b5 | affected | ||
4e19d6b65fb4fc42e352ce9883649e049da14743< 299bc6ffa57e04e74c6cce866d6c0741fb4897a1 | affected | ||
4e19d6b65fb4fc42e352ce9883649e049da14743< f9ca51596bbfd0f9c386dd1c613c394c78d9e5e6 | affected | ||
| … +14 more rows | |||
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I. Basic Information for CVE-2024-42304
Vulnerability Information
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Vulnerability Title
ext4: make sure the first directory block is not a hole
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: make sure the first directory block is not a hole The syzbot constructs a directory that has no dirblock but is non-inline, i.e. the first directory block is a hole. And no errors are reported when creating files in this directory in the following flow. ext4_mknod ... ext4_add_entry // Read block 0 ext4_read_dirblock(dir, block, DIRENT) bh = ext4_bread(NULL, inode, block, 0) if (!bh && (type == INDEX || type == DIRENT_HTREE)) // The first directory block is a hole // But type == DIRENT, so no error is reported. After that, we get a directory block without '.' and '..' but with a valid dentry. This may cause some code that relies on dot or dotdot (such as make_indexed_dir()) to crash. Therefore when ext4_read_dirblock() finds that the first directory block is a hole report that the filesystem is corrupted and return an error to avoid loading corrupted data from disk causing something bad.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未能正确检查根目录块是否为空。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2024-42304
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|---|
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Same Patch Batch · Linux · 2024-08-17 · 109 CVEs total
| CVE-2024-43820 | dm-raid: Fix WARN_ON_ONCE check for sync_thread in raid_resume | |
| CVE-2024-43833 | media: v4l: async: Fix NULL pointer dereference in adding ancillary links | |
| CVE-2024-43831 | media: mediatek: vcodec: Handle invalid decoder vsi | |
| CVE-2024-43832 | s390/uv: Don't call folio_wait_writeback() without a folio reference | |
| CVE-2024-43830 | leds: trigger: Unregister sysfs attributes before calling deactivate() | |
| CVE-2024-43829 | drm/qxl: Add check for drm_cvt_mode | |
| CVE-2024-43828 | ext4: fix infinite loop when replaying fast_commit | |
| CVE-2024-43827 | drm/amd/display: Add null check before access structs | |
| CVE-2024-43826 | nfs: pass explicit offset/count to trace events | |
| CVE-2024-43825 | iio: Fix the sorting functionality in iio_gts_build_avail_time_table | |
| CVE-2024-43823 | PCI: keystone: Fix NULL pointer dereference in case of DT error in ks_pcie_setup_rc_app_re | |
| CVE-2024-43824 | PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init() | |
| CVE-2024-43822 | ASoc: PCM6240: Return directly after a failed devm_kzalloc() in pcmdevice_i2c_probe() | |
| CVE-2024-43821 | scsi: lpfc: Fix a possible null pointer dereference | |
| CVE-2024-42318 | landlock: Don't lose track of restrictions on cred_transfer | |
| CVE-2024-42321 | net: flow_dissector: use DEBUG_NET_WARN_ON_ONCE | |
| CVE-2024-42320 | s390/dasd: fix error checks in dasd_copy_pair_store() | |
| CVE-2024-42319 | mailbox: mtk-cmdq: Move devm_mbox_controller_register() after devm_pm_runtime_enable() | |
| CVE-2024-42322 | ipvs: properly dereference pe in ip_vs_add_service | |
| CVE-2024-42317 | mm/huge_memory: avoid PMD-size page cache if needed |
Showing top 20 of 109 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length - CVE-2026-43489
liveupdate: luo_file: remember retrieve() status - CVE-2026-43487
ata: libata-core: Disable LPM on ST1000DM010-2EP102 - CVE-2026-43488
usb: xhci: Prevent interrupt storm on host controller error
Same vendor: Linux
- CVE-2026-46333
ptrace: slightly saner 'get_dumpable()' logic - CVE-2026-43490
ksmbd: validate inherited ACE SID length - CVE-2026-43489
liveupdate: luo_file: remember retrieve() status - CVE-2026-43487
ata: libata-core: Disable LPM on ST1000DM010-2EP102 - CVE-2026-43488
usb: xhci: Prevent interrupt storm on host controller error
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