CVE-2023-53101
Vulnerability Scoring
Analysis In Progress
CVE-2023-53101 Vulnerability Analysis & Exploit Details
CVE-2023-53101
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2023-53101 Details
Status: Awaiting Analysis
Last updated: 🕣 05 May 2025, 20:54 UTC
Originally published on: 🕓 02 May 2025, 16:15 UTC
Time between publication and last update: 3 days
CVSS Release:
CVE-2023-53101 Vulnerability Summary
CVE-2023-53101: In the Linux kernel, the following vulnerability has been resolved: ext4: zero i_disksize when initializing the bootloader inode If the boot loader inode has never been used before, the EXT4_IOC_SWAP_BOOT inode will initialize it, including setting the i_size to 0. However, if the "never before used" boot loader has a non-zero i_size, then i_disksize will be non-zero, and the inconsistency between i_size and i_disksize can trigger a kernel warning: WARNING: CPU: 0 PID: 2580 at fs/ext4/file.c:319 CPU: 0 PID: 2580 Comm: bb Not tainted 6.3.0-rc1-00004-g703695902cfa RIP: 0010:ext4_file_write_iter+0xbc7/0xd10 Call Trace: vfs_write+0x3b1/0x5c0 ksys_write+0x77/0x160 __x64_sys_write+0x22/0x30 do_syscall_64+0x39/0x80 Reproducer: 1. create corrupted image and mount it: mke2fs -t ext4 /tmp/foo.img 200 debugfs -wR "sif <5> size 25700" /tmp/foo.img mount -t ext4 /tmp/foo.img /mnt cd /mnt echo 123 > file 2. Run the reproducer program: posix_memalign(&buf, 1024, 1024) fd = open("file", O_RDWR | O_DIRECT); ioctl(fd, EXT4_IOC_SWAP_BOOT); write(fd, buf, 1024); Fix this by setting i_disksize as well as i_size to zero when initiaizing the boot loader inode.
Assessing the Risk of CVE-2023-53101
Access Complexity Graph
The exploitability of CVE-2023-53101 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2023-53101
No exploitability data is available for CVE-2023-53101.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2023-53101, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2023-53101, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2023-53101 does not compromise confidentiality.
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Integrity:
None
CVE-2023-53101 does not impact data integrity.
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Availability:
None
CVE-2023-53101 does not affect system availability.
CVE-2023-53101 References
External References
- https://git.kernel.org/stable/c/01a821aacc64d4b05dafd239dbc9b7856686002f
- https://git.kernel.org/stable/c/0d8a6c9a6415999fee1259ccf1796480c026b7d6
- https://git.kernel.org/stable/c/3f00c476da8fe7c4c34ea16abb55d74127120413
- https://git.kernel.org/stable/c/59eee0cdf8c036f554add97a4da7c06d7a9ff34a
- https://git.kernel.org/stable/c/9cb27b1e76f0cc886ac09055bc41c0ab3f205167
- https://git.kernel.org/stable/c/9e9a4cc5486356158554f6ad73027d8635a48b34
- https://git.kernel.org/stable/c/d6c1447e483c05dbcfb3ff77ac04237a82070b8c
- https://git.kernel.org/stable/c/f5361da1e60d54ec81346aee8e3d8baf1be0b762
CWE Common Weakness Enumeration
Unknown
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