# CVE-2024-44938: linux: In the Linux kernel, the following vulnerability has been resolved:  jfs: Fix shift-out-of-bounds in dbDiscardAG  Whe...

CVE-2024-44938 is fixed in 41 products on 1 platform, first by DEBIAN-CVE-2024-44938, released August 26, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2024-44938
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 26, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | bpftool ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | dtb-aarch64 opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-64kb opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-64kb sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-azure opensuse-leap 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-azure sles 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-debug opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-default opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-default sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-default-base opensuse-leap 15.6 | 6.4.0-150600.23.22.1.150600.12.8.3 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-default-base sles 15.6 | 6.4.0-150600.23.22.1.150600.12.8.3 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-docs opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-docs sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-kvmsmall opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-livepatch-SLE15-SP6-RT_Update_2 sles 15.6 | 1-150600.1.3.2 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-livepatch-SLE15-SP6_Update_4 sles 15.6 | 1-150600.13.3.3 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-obs-build opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-obs-build sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-obs-qa opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-rt opensuse-leap 15.6 | 6.4.0-150600.10.8.3 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-rt_debug opensuse-leap 15.6 | 6.4.0-150600.10.8.3 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-source opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-source sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-source-azure opensuse-leap 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-source-azure sles 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-source-rt opensuse-leap 15.6 | 6.4.0-150600.10.8.3 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-syms opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-syms sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-syms-azure opensuse-leap 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-syms-azure sles 15.6 | 6.4.0-150600.8.11.1 | [SUSE-SU-2024:3194-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3194-1.md) | Sep 10, 2024 |
| Linux | kernel-syms-rt opensuse-leap 15.6 | 6.4.0-150600.10.8.1 | [SUSE-SU-2024:3195-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3195-1.md) | Sep 10, 2024 |
| Linux | kernel-uek ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-container ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-container ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-container-debug ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-core ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-core ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-core ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-core ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-devel ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-modules ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-modules ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-modules-extra ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-debug-modules-extra ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-devel ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-devel ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-doc ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-doc ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-modules ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-modules ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-modules-extra ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek-modules-extra ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-core ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-core ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-devel ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-devel ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-modules ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-modules ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-modules-extra ol 8 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-uek64k-modules-extra ol 9 | 0:5.15.0-310.184.5.2.el9uek | [ELSA-2025-20470](https://patchblox.com/security/data/fix/linux/elsa-2025-20470.md) | Jul 14, 2025 |
| Linux | kernel-zfcpdump opensuse-leap 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | kernel-zfcpdump sles 15.6 | 6.4.0-150600.23.22.1 | [SUSE-SU-2024:3383-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3383-1.md) | Sep 23, 2024 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.112-1 | [DEBIAN-CVE-2024-44938](https://patchblox.com/security/data/fix/linux/debian-cve-2024-44938.md) | Aug 26, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.10.6-1 | [DEBIAN-CVE-2024-44938](https://patchblox.com/security/data/fix/linux/debian-cve-2024-44938.md) | Aug 26, 2024 |
| Linux | linux Debian 14 | 6.10.6-1 | [DEBIAN-CVE-2024-44938](https://patchblox.com/security/data/fix/linux/debian-cve-2024-44938.md) | Aug 26, 2024 |

---

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