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CVE-2024-50230— nilfs2: fix kernel bug due to missing clearing of checked flag

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于缺少清除checked标志而导致内核错误。

CVSS 7.8 · High EPSS 0.28% · P20

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8c26c4e2694a163d525976e804d81cd955bbb40c< 994b2fa13a6c9cf3feca93090a9c337d48e3d60d affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 64afad73e4623308d8943645e5631f2c7a2d7971 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< aa0cee46c5d3fd9a39575a4c8a4f65f25f095b89 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< f05dbebb8ee34882505d53d83af7d18f28a49248 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< cd0cdb51b15203fa27d4b714be83b7dfffa0b752 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< f2f1fa446676c21edb777e6d2bc4fa8f956fab68 affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 56c6171932a7fb267ac6cb4ff8759b93ee1d0e2e affected
8c26c4e2694a163d525976e804d81cd955bbb40c< 41e192ad2779cae0102879612dfe46726e4396aa affected
… +10 more rows
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I. Basic Information for CVE-2024-50230

Vulnerability Information
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Vulnerability Title
nilfs2: fix kernel bug due to missing clearing of checked flag
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel bug due to missing clearing of checked flag Syzbot reported that in directory operations after nilfs2 detects filesystem corruption and degrades to read-only, __block_write_begin_int(), which is called to prepare block writes, may fail the BUG_ON check for accesses exceeding the folio/page size, triggering a kernel bug. This was found to be because the "checked" flag of a page/folio was not cleared when it was discarded by nilfs2's own routine, which causes the sanity check of directory entries to be skipped when the directory page/folio is reloaded. So, fix that. This was necessary when the use of nilfs2's own page discard routine was applied to more than just metadata files.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于缺少清除checked标志而导致内核错误。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8c26c4e2694a163d525976e804d81cd955bbb40c ~ 994b2fa13a6c9cf3feca93090a9c337d48e3d60d -
Linux Linux 3.10 -

II. Public POCs for CVE-2024-50230

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III. Intelligence Information for CVE-2024-50230

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Patches & Fixes for CVE-2024-50230 (8)

Same Patch Batch · Linux · 2024-11-09 · 49 CVEs total

CVE-2024-50215 8.1 HIGH nvmet-auth: assign dh_key to NULL after kfree_sensitive
CVE-2024-50235 7.8 HIGH wifi: cfg80211: clear wdev->cqm_config pointer on free
CVE-2024-50217 7.8 HIGH btrfs: fix use-after-free of block device file in __btrfs_free_extra_devids()
CVE-2024-50261 7.8 HIGH macsec: Fix use-after-free while sending the offloading packet
CVE-2024-50221 7.8 HIGH drm/amd/pm: Vangogh: Fix kernel memory out of bounds write
CVE-2024-50225 7.8 HIGH btrfs: fix error propagation of split bios
CVE-2024-50246 7.8 HIGH fs/ntfs3: Add rough attr alloc_size check
CVE-2024-50253 7.8 HIGH bpf: Check the validity of nr_words in bpf_iter_bits_new()
CVE-2024-50237 7.8 HIGH wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
CVE-2024-50250 7.8 HIGH fsdax: dax_unshare_iter needs to copy entire blocks
CVE-2024-50262 7.8 HIGH bpf: Fix out-of-bounds write in trie_get_next_key()
CVE-2024-50256 7.5 HIGH netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()
CVE-2024-50241 7.5 HIGH NFSD: Initialize struct nfsd4_copy earlier
CVE-2024-50247 7.3 HIGH fs/ntfs3: Check if more than chunk-size bytes are written
CVE-2024-50248 7.1 HIGH ntfs3: Add bounds checking to mi_enum_attr()
CVE-2024-50222 7.0 HIGH iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP
CVE-2024-50257 7.0 HIGH netfilter: Fix use-after-free in get_info()
CVE-2024-50245 fs/ntfs3: Fix possible deadlock in mi_read
CVE-2024-50239 phy: qcom: qmp-usb-legacy: fix NULL-deref on runtime suspend
CVE-2024-50244 fs/ntfs3: Additional check in ni_clear()

Showing top 20 of 49 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-50230

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