Unrated severityNVD Advisory· Published Oct 1, 2025· Updated Oct 29, 2025
ext4: improve error handling from ext4_dirhash()
CVE-2023-53473
Description
In the Linux kernel, the following vulnerability has been resolved:
ext4: improve error handling from ext4_dirhash()
The ext4_dirhash() will *almost* never fail, especially when the hash tree feature was first introduced. However, with the addition of support of encrypted, casefolded file names, that function can most certainly fail today.
So make sure the callers of ext4_dirhash() properly check for failures, and reflect the errors back up to their callers.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
85- osv-coords83 versionspkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Proxy%20LTS%204.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Proxy%20LTS%204.3pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-livepatch-SLE15-SP4_Update_45&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_31&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Proxy%20LTS%204.3pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Proxy%20LTS%204.3pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Server%20LTS%204.3pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Manager%20Server%20LTS%204.3
< 5.14.21-150400.24.179.1+ 82 more
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150500.55.124.1.150500.6.59.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1.150400.24.92.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 1-150400.9.3.1
- (no CPE)range: < 1-150500.11.3.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150500.13.109.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150400.15.133.1
- (no CPE)range: < 5.14.21-150500.13.109.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150400.24.179.1
- (no CPE)range: < 5.14.21-150500.55.124.1
- (no CPE)range: < 5.14.21-150400.24.179.1
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/4b3cb1d108bfc2aebb0d7c8a52261a53cf7f5786mitre
- git.kernel.org/stable/c/70d579aefa652a06af97e013e3fbbabbe5a43553mitre
- git.kernel.org/stable/c/b2531936118deb3f479c4fa1bcd787b74b8faa6amitre
- git.kernel.org/stable/c/c1fae027da61fe8e7eb99f7244297e81bc0f1e43mitre
- git.kernel.org/stable/c/f68876aeef96ef8b708ab10b9cb47ce0a5adb424mitre
News mentions
0No linked articles in our index yet.