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CVE-2024-56619— nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()

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nilfs2模块中nilfs_find_entry函数中潜在的越界内存访问。

CVSS 7.8 · High EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1564 · Hide Artifacts

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 2ba466d74ed74f073257f86e61519cb8f8f46184< 09d6d05579fd46e61abf6e457bb100ff11f3a9d3 affected
2ba466d74ed74f073257f86e61519cb8f8f46184< e3732102a9d638d8627d14fdf7b208462f0520e0 affected
2ba466d74ed74f073257f86e61519cb8f8f46184< 48eb6e7404948032bbe811c5affbe39f6b316951 affected
2ba466d74ed74f073257f86e61519cb8f8f46184< 5af8366625182f01f6d8465c9a3210574673af57 affected
2ba466d74ed74f073257f86e61519cb8f8f46184< c3afea07477baccdbdec4483f8d5e59d42a3f67f affected
2ba466d74ed74f073257f86e61519cb8f8f46184< 31f7b57a77d4c82a34ddcb6ff35b5aa577ef153e affected
2ba466d74ed74f073257f86e61519cb8f8f46184< 985ebec4ab0a28bb5910c3b1481a40fbf7f9e61d affected
2.6.30 affected
… +8 more rows
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I. Basic Information for CVE-2024-56619

Vulnerability Information
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Vulnerability Title
nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry() Syzbot reported that when searching for records in a directory where the inode's i_size is corrupted and has a large value, memory access outside the folio/page range may occur, or a use-after-free bug may be detected if KASAN is enabled. This is because nilfs_last_byte(), which is called by nilfs_find_entry() and others to calculate the number of valid bytes of directory data in a page from i_size and the page index, loses the upper 32 bits of the 64-bit size information due to an inappropriate type of local variable to which the i_size value is assigned. This caused a large byte offset value due to underflow in the end address calculation in the calling nilfs_find_entry(), resulting in memory access that exceeds the folio/page size. Fix this issue by changing the type of the local variable causing the bit loss from "unsigned int" to "u64". The return value of nilfs_last_byte() is also of type "unsigned int", but it is truncated so as not to exceed PAGE_SIZE and no bit loss occurs, so no change is required.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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nilfs2模块中nilfs_find_entry函数中潜在的越界内存访问。
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 2ba466d74ed74f073257f86e61519cb8f8f46184 ~ 09d6d05579fd46e61abf6e457bb100ff11f3a9d3 -
Linux Linux 2.6.30 -

II. Public POCs for CVE-2024-56619

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III. Intelligence Information for CVE-2024-56619

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Patches & Fixes for CVE-2024-56619 (7)

Same Patch Batch · Linux · 2024-12-27 · 221 CVEs total

CVE-2024-56640 9.8 CRITICAL net/smc: fix LGR and link use-after-free issue
CVE-2024-56645 9.8 CRITICAL can: j1939: j1939_session_new(): fix skb reference counting
CVE-2024-53169 9.8 CRITICAL nvme-fabrics: fix kernel crash while shutting down controller
CVE-2024-53209 9.8 CRITICAL bnxt_en: Fix receive ring space parameters when XDP is active
CVE-2024-53206 9.8 CRITICAL tcp: Fix use-after-free of nreq in reqsk_timer_handler().
CVE-2024-56656 9.8 CRITICAL bnxt_en: Fix aggregation ID mask to prevent oops on 5760X chips
CVE-2024-53186 9.8 CRITICAL ksmbd: fix use-after-free in SMB request handling
CVE-2024-53176 9.8 CRITICAL smb: During unmount, ensure all cached dir instances drop their dentry
CVE-2024-53177 9.8 CRITICAL smb: prevent use-after-free due to open_cached_dir error paths
CVE-2024-53179 9.8 CRITICAL smb: client: fix use-after-free of signing key
CVE-2024-56591 8.8 HIGH Bluetooth: hci_conn: Use disable_delayed_work_sync
CVE-2024-56626 8.8 HIGH ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write
CVE-2024-53237 8.8 HIGH Bluetooth: fix use-after-free in device_for_each_child()
CVE-2024-53224 8.8 HIGH RDMA/mlx5: Move events notifier registration to be after device registration
CVE-2024-56651 8.8 HIGH can: hi311x: hi3110_can_ist(): fix potential use-after-free
CVE-2024-56653 8.8 HIGH Bluetooth: btmtk: avoid UAF in btmtk_process_coredump
CVE-2024-56669 8.8 HIGH iommu/vt-d: Remove cache tags before disabling ATS
CVE-2024-56627 8.1 HIGH ksmbd: fix Out-of-Bounds Read in ksmbd_vfs_stream_read
CVE-2024-53232 7.8 HIGH iommu/s390: Implement blocking domain
CVE-2024-56606 7.8 HIGH af_packet: avoid erroring out after sock_init_data() in packet_create()

Showing top 20 of 221 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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