Read the docs
TI-2023-29740 Aliases CVE-2023-53450GHSA-x72c-72g3-7ffp

ext4: remove a BUG_ON in ext4_mb_release_group_pa()

Priority LOW 24CWE-617Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 4 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-617.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00163 5th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.14.315, 4.19.283, 5.4.243 +6Red Hat: 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux2.6.25 and later4.14.315, 4.19.283, 5.4.243, 5.10.180, 5.15.112, 6.1.29, 6.2.16, 6.3.3, 6.4Patch availableCNA
  • Linux VendorLinux Affected 2.6.25 and later Fixed in 4.14.315, 4.19.283, 5.4.243, 5.10.180, 5.15.112, 6.1.29, 6.2.16, 6.3.3, 6.4 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.25 to before 4.14.315; 4.15 to before 4.19.283; 4.20 to before 5.4.243; 5.5 to before 5.10.180; 5.11 to before 5.15.112; 5.16 to before 6.1.29; 6.2 to before 6.2.16; 6.3 to before 6.3.3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*6.4 rc1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.25 to before 4.14.315; 4.15 to before 4.19.283; 4.20 to before 5.4.243; 5.5 to before 5.10.180; 5.11 to before 5.15.112; 5.16 to before 6.1.29; 6.2 to before 6.2.16; 6.3 to before 6.3.3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:* Versions 6.4 rc1 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.14.315, 4.19.283, 5.4.243, 5.10.180, 5.15.112, 6.1.29, 6.2.16, 6.3.3, 6.4

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Not affected: 1 product
  • Red Hat Enterprise Linux 10

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-53450
  2. 2026-10-03 Alias added: GHSA-x72c-72g3-7ffp
  3. 2026-11-05 CISA SSVC decision points changed

References

Patch 9

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences