In the Linux kernel, the following vulnerability has been resolved:

jfs: Fix shift-out-of-bounds in dbDiscardAG

When searching for the next smaller log2 block, BLKSTOL2() returned 0,
causing shift exponent -1 to be negative.

This patch fixes the issue by exiting the loop directly when negative
shift is found.
Advisories
Source ID Title
Debian DLA Debian DLA DLA-4008-1 linux-6.1 security update
Debian DLA Debian DLA DLA-4178-1 linux security update
Debian DSA Debian DSA DSA-5782-1 linux security update
Ubuntu USN Ubuntu USN USN-7154-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7155-1 Linux kernel (NVIDIA) vulnerabilities
Ubuntu USN Ubuntu USN USN-7156-1 Linux kernel (GKE) vulnerabilities
Ubuntu USN Ubuntu USN USN-7154-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-7196-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-7332-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7332-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7332-3 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7342-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7344-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7344-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7387-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7387-2 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-7387-3 Linux kernel (Real-time) vulnerabilities
Ubuntu USN Ubuntu USN USN-7388-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7389-1 Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN Ubuntu USN USN-7390-1 Linux kernel (Xilinx ZynqMP) vulnerabilities
Ubuntu USN Ubuntu USN USN-7391-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7392-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7392-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-7392-3 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-7392-4 Linux kernel (AWS FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-7393-1 Linux kernel (FIPS) vulnerabilities
Ubuntu USN Ubuntu USN USN-7401-1 Linux kernel (AWS) vulnerabilities
Ubuntu USN Ubuntu USN USN-7407-1 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-7413-1 Linux kernel (IoT) vulnerabilities
Ubuntu USN Ubuntu USN USN-7421-1 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-7458-1 Linux kernel (IBM) vulnerabilities
Ubuntu USN Ubuntu USN USN-7459-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-7459-2 Linux kernel (GCP) vulnerabilities
Ubuntu USN Ubuntu USN USN-7463-1 Linux kernel (IBM) vulnerabilities
Ubuntu USN Ubuntu USN USN-7539-1 Linux kernel (Raspberry Pi) vulnerabilities
Ubuntu USN Ubuntu USN USN-7540-1 Linux kernel (Raspberry Pi) vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 03 Nov 2025 23:30:00 +0000

Type Values Removed Values Added
References

Mon, 03 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Fri, 02 May 2025 06:30:00 +0000


Wed, 06 Nov 2024 02:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-682

Thu, 12 Sep 2024 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses CWE-787
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 29 Aug 2024 16:45:00 +0000


Tue, 27 Aug 2024 15:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate


Mon, 26 Aug 2024 11:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: jfs: Fix shift-out-of-bounds in dbDiscardAG When searching for the next smaller log2 block, BLKSTOL2() returned 0, causing shift exponent -1 to be negative. This patch fixes the issue by exiting the loop directly when negative shift is found.
Title jfs: Fix shift-out-of-bounds in dbDiscardAG
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-11-03T22:13:42.650Z

Reserved: 2024-08-21T05:34:56.664Z

Link: CVE-2024-44938

cve-icon Vulnrichment

Updated: 2025-11-03T22:13:42.650Z

cve-icon NVD

Status : Modified

Published: 2024-08-26T12:15:05.960

Modified: 2025-11-03T23:15:42.970

Link: CVE-2024-44938

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-08-26T00:00:00Z

Links: CVE-2024-44938 - Bugzilla

cve-icon OpenCVE Enrichment

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