# CVE-2024-42104: linux: In the Linux kernel, the following vulnerability has been resolved:  nilfs2: add missing check for inode numbers on d...

CVE-2024-42104 is fixed in 40 products on 1 platform, first by DEBIAN-CVE-2024-42104, released July 30, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2024-42104
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 30, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  nilfs2: add missing check for inode numbers on directory entries  Syzbot reported that mounting and unmounting a specific pattern of corrupted nilfs2 filesystem images causes a use-after-free of metadata file inodes, which triggers a kernel bug in lru_add_fn().  As Jan Kara pointed out, this is because the link count of a metadata file gets corrupted to 0, and nilfs_evict_inode(), which is called from iput(), tries to delete that inode (ifile inode in this case).  The inconsistency occurs because directories containing the inode numbers of these metadata files that should not be visible in the namespace are read without checking.  Fix this issue by treating the inode numbers of these internal files as errors in the sanity check helper when reading directory folios/pages.  Also thanks to Hillf Danton and Matthew Wilcox for their initial mm-layer analysis.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | bpftool ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| 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 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek ol 8 | 0:5.4.17-2136.335.4.el8uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| Linux | kernel-uek ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-container ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-container ol 8 | 0:5.4.17-2136.335.4.el8 | [ELSA-2024-12612](https://patchblox.com/security/data/fix/linux/elsa-2024-12612.md) | Sep 11, 2024 |
| Linux | kernel-uek-container ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.4.17-2136.335.4.el8 | [ELSA-2024-12612](https://patchblox.com/security/data/fix/linux/elsa-2024-12612.md) | Sep 11, 2024 |
| Linux | kernel-uek-container-debug ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-core ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-core ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug ol 8 | 0:5.4.17-2136.335.4.el8uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| Linux | kernel-uek-debug ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-core ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-core ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.4.17-2136.335.4.el8uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| Linux | kernel-uek-debug-devel ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-modules ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-modules ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-modules-extra ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-debug-modules-extra ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-devel ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-devel ol 8 | 0:5.4.17-2136.335.4.el8uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| Linux | kernel-uek-devel ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-doc ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-doc ol 8 | 0:5.4.17-2136.335.4.el8uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| Linux | kernel-uek-doc ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-modules ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-modules ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-modules-extra ol 8 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-modules-extra ol 9 | 0:5.15.0-210.163.7.el9uek | [ELSA-2024-12618](https://patchblox.com/security/data/fix/linux/elsa-2024-12618.md) | Sep 12, 2024 |
| Linux | kernel-uek-tools ol 8 | 0:5.4.17-2136.335.4.el7uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| Linux | kernel-uek-tools-libs ol 8 | 0:5.4.17-2136.335.4.el7uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| 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) | 6.1.98-1 | [DEBIAN-CVE-2024-42104](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42104.md) | Jul 30, 2024 |
| Linux | linux Debian 13.5 (trixie) | 6.9.9-1 | [DEBIAN-CVE-2024-42104](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42104.md) | Jul 30, 2024 |
| Linux | linux Debian 14 | 6.9.9-1 | [DEBIAN-CVE-2024-42104](https://patchblox.com/security/data/fix/linux/debian-cve-2024-42104.md) | Jul 30, 2024 |
| Linux | perf ol 8 | 0:5.4.17-2136.335.4.el7uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |
| Linux | python-perf ol 8 | 0:5.4.17-2136.335.4.el7uek | [ELSA-2024-12610](https://patchblox.com/security/data/fix/linux/elsa-2024-12610.md) | Sep 10, 2024 |

---

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