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CVE-2021-46945— ext4: always panic when errors=panic is specified

EPSS 0.02% · P5
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I. Basic Information for CVE-2021-46945

Vulnerability Information
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Vulnerability Title
ext4: always panic when errors=panic is specified
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: always panic when errors=panic is specified Before commit 014c9caa29d3 ("ext4: make ext4_abort() use __ext4_error()"), the following series of commands would trigger a panic: 1. mount /dev/sda -o ro,errors=panic test 2. mount /dev/sda -o remount,abort test After commit 014c9caa29d3, remounting a file system using the test mount option "abort" will no longer trigger a panic. This commit will restore the behaviour immediately before commit 014c9caa29d3. (However, note that the Linux kernel's behavior has not been consistent; some previous kernel versions, including 5.4 and 4.19 similarly did not panic after using the mount option "abort".) This also makes a change to long-standing behaviour; namely, the following series commands will now cause a panic, when previously it did not: 1. mount /dev/sda -o ro,errors=panic test 2. echo test > /sys/fs/ext4/sda/trigger_fs_error However, this makes ext4's behaviour much more consistent, so this is a good thing.
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，该漏洞源于指定 errors=panic 时总是出现 panic。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 014c9caa29d3a44e0de695c99ef18bec3e887d52 ~ 64e1eebe2131183174f4fbb6b1491355f96c6cde -
LinuxLinux 5.11 -

II. Public POCs for CVE-2021-46945

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III. Intelligence Information for CVE-2021-46945

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Same Patch Batch · Linux · 2024-02-27 · 67 CVEs total

CVE-2021-46951tpm: efi: Use local variable for calculating final log size
CVE-2021-46971perf/core: Fix unconditional security_locked_down() call
CVE-2021-46970bus: mhi: pci_generic: Remove WQ_MEM_RECLAIM flag from state workqueue
CVE-2021-46969bus: mhi: core: Fix invalid error returning in mhi_queue
CVE-2021-46957riscv/kprobe: fix kernel panic when invoking sys_read traced by kprobe
CVE-2021-46956virtiofs: fix memory leak in virtio_fs_probe()
CVE-2021-46955openvswitch: fix stack OOB read while fragmenting IPv4 packets
CVE-2021-46954net/sched: sch_frag: fix stack OOB read while fragmenting IPv4 packets
CVE-2021-46953ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
CVE-2021-46952NFS: fs_context: validate UDP retrans to prevent shift out-of-bounds
CVE-2021-46958btrfs: fix race between transaction aborts and fsyncs leading to use-after-free
CVE-2021-46950md/raid1: properly indicate failure when ending a failed write request
CVE-2021-46949sfc: farch: fix TX queue lookup in TX flush done handling
CVE-2021-46948sfc: farch: fix TX queue lookup in TX event handling
CVE-2021-46947sfc: adjust efx->xdp_tx_queue_count with the real number of initialized queues
CVE-2021-46944media: staging/intel-ipu3: Fix memory leak in imu_fmt
CVE-2021-46943media: staging/intel-ipu3: Fix set_fmt error handling
CVE-2021-46942io_uring: fix shared sqpoll cancellation hangs
CVE-2021-46941usb: dwc3: core: Do core softreset when switch mode
CVE-2021-46940tools/power turbostat: Fix offset overflow issue in index converting

Showing top 20 of 67 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-46945

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