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CVE-2023-53450— ext4: remove a BUG_ON in ext4_mb_release_group_pa()

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，该漏洞源于块组计算可能发生整数下溢，可能导致内核崩溃。

AI Predicted 4.4 Difficulty: Theoretical EPSS 0.15% · P5

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux c9de560ded61faa5b754137b7753da252391c55a< d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b affected
c9de560ded61faa5b754137b7753da252391c55a< ef16d8a1798db1a1604ac44ca1bd73ec6bebf483 affected
c9de560ded61faa5b754137b7753da252391c55a< 185062a21976fbc38f2efd296951b02c4500cf65 affected
c9de560ded61faa5b754137b7753da252391c55a< b0fc279de4bf17e1710bb7e83906538ff8f11111 affected
c9de560ded61faa5b754137b7753da252391c55a< 978e5e9111af18741449b81fefd531a622dd969a affected
c9de560ded61faa5b754137b7753da252391c55a< d87a4e4094c9879fc8acdff8ce59fdffa979c8e0 affected
c9de560ded61faa5b754137b7753da252391c55a< bf2a16eb4e6d06124bd8436d4546f61539a65f29 affected
c9de560ded61faa5b754137b7753da252391c55a< 53c14e7cc2257191ba15425c15638fc4f8abb92b affected
… +12 more rows
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I. Basic Information for CVE-2023-53450

Vulnerability Information
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Vulnerability Title
ext4: remove a BUG_ON in ext4_mb_release_group_pa()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUG_ON in ext4_mb_release_group_pa() If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the s_first_data_block is set to a very large number, the calculation of the block group can underflow, and trigger a BUG_ON check. Change this to be an ext4_warning so that we don't crash the kernel.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于块组计算可能发生整数下溢，可能导致内核崩溃。
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 c9de560ded61faa5b754137b7753da252391c55a ~ d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b -
Linux Linux 2.6.25 -

II. Public POCs for CVE-2023-53450

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III. Intelligence Information for CVE-2023-53450

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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total

CVE-2023-53517 9.8 CRITICAL tipc: do not update mtu if msg_max is too small in mtu negotiation
CVE-2023-53454 8.8 HIGH HID: multitouch: Correct devm device reference for hidinput input_dev name
CVE-2025-39918 8.8 HIGH wifi: mt76: fix linked list corruption
CVE-2025-39919 8.8 HIGH wifi: mt76: mt7996: add missing check for rx wcid entries
CVE-2022-50442 8.4 HIGH fs/ntfs3: Validate buffer length while parsing index
CVE-2023-53493 8.4 HIGH accel/qaic: tighten bounds checking in decode_message()
CVE-2023-53465 7.8 HIGH soundwire: qcom: fix storing port config out-of-bounds
CVE-2023-53485 7.8 HIGH fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev
CVE-2022-50440 7.8 HIGH drm/vmwgfx: Validate the box size for the snooped cursor
CVE-2022-50454 7.8 HIGH drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()
CVE-2025-39924 7.8 HIGH erofs: fix invalid algorithm for encoded extents
CVE-2023-53510 7.8 HIGH scsi: ufs: core: Fix handling of lrbp->cmd
CVE-2025-39927 7.8 HIGH ceph: fix race condition validating r_parent before applying state
CVE-2023-53506 7.8 HIGH udf: Do not bother merging very long extents
CVE-2022-50421 7.8 HIGH rpmsg: char: Avoid double destroy of default endpoint
CVE-2022-50437 7.8 HIGH drm/msm/hdmi: fix memory corruption with too many bridges
CVE-2023-53495 7.8 HIGH net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc()
CVE-2023-53494 7.8 HIGH crypto: xts - Handle EBUSY correctly
CVE-2022-50432 7.8 HIGH kernfs: fix use-after-free in __kernfs_remove
CVE-2023-53492 7.8 HIGH netfilter: nf_tables: do not ignore genmask when looking up chain by id

Showing top 20 of 169 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53450

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