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CVE-2024-50191— ext4: don't set SB_RDONLY after filesystem errors

EPSS 0.03% · P9
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I. Basic Information for CVE-2024-50191

Vulnerability Information
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Vulnerability Title
ext4: don't set SB_RDONLY after filesystem errors
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: don't set SB_RDONLY after filesystem errors When the filesystem is mounted with errors=remount-ro, we were setting SB_RDONLY flag to stop all filesystem modifications. We knew this misses proper locking (sb->s_umount) and does not go through proper filesystem remount procedure but it has been the way this worked since early ext2 days and it was good enough for catastrophic situation damage mitigation. Recently, syzbot has found a way (see link) to trigger warnings in filesystem freezing because the code got confused by SB_RDONLY changing under its hands. Since these days we set EXT4_FLAGS_SHUTDOWN on the superblock which is enough to stop all filesystem modifications, modifying SB_RDONLY shouldn't be needed. So stop doing that.
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，该漏洞源于在文件系统错误后不当设置只读问题。
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 95257987a6387f02970eda707e55a06cce734e18 ~ 58c0648e4c773f5b54f0cb63bc8c7c6bf52719a9 -
LinuxLinux 6.6 -

II. Public POCs for CVE-2024-50191

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III. Intelligence Information for CVE-2024-50191

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Same Patch Batch · Linux · 2024-11-08 · 38 CVEs total

CVE-2024-50203bpf, arm64: Fix address emission with tag-based KASAN enabled
CVE-2024-50194arm64: probes: Fix uprobes for big-endian kernels
CVE-2024-50195posix-clock: Fix missing timespec64 check in pc_clock_settime()
CVE-2024-50196pinctrl: ocelot: fix system hang on level based interrupts
CVE-2024-50197pinctrl: intel: platform: fix error path in device_for_each_child_node()
CVE-2024-50198iio: light: veml6030: fix IIO device retrieval from embedded device
CVE-2024-50199mm/swapfile: skip HugeTLB pages for unuse_vma
CVE-2024-50200maple_tree: correct tree corruption on spanning store
CVE-2024-50201drm/radeon: Fix encoder->possible_clones
CVE-2024-50202nilfs2: propagate directory read errors from nilfs_find_entry()
CVE-2024-50193x86/entry_32: Clear CPU buffers after register restore in NMI return
CVE-2024-50204fs: don't try and remove empty rbtree node
CVE-2024-50205ALSA: firewire-lib: Avoid division by zero in apply_constraint_to_size()
CVE-2024-50206net: ethernet: mtk_eth_soc: fix memory corruption during fq dma init
CVE-2024-50207ring-buffer: Fix reader locking when changing the sub buffer order
CVE-2024-50209RDMA/bnxt_re: Add a check for memory allocation
CVE-2024-50208RDMA/bnxt_re: Fix a bug while setting up Level-2 PBL pages
CVE-2024-50210posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime()
CVE-2024-50211udf: refactor inode_bmap() to handle error
CVE-2024-50183scsi: lpfc: Ensure DA_ID handling completion before deleting an NPIV instance

Showing top 20 of 38 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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