Unrated severityNVD Advisory· Published May 2, 2025· Updated May 4, 2025

loop: Fix use-after-free issues

CVE-2023-53111

Description

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

do_req_filebacked() calls blk_mq_complete_request() synchronously or asynchronously when using asynchronous I/O unless memory allocation fails. Hence, modify loop_handle_cmd() such that it does not dereference 'cmd' nor 'rq' after do_req_filebacked() finished unless we are sure that the request has not yet been completed. This patch fixes the following kernel crash:

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000054 Call trace: css_put.42938+0x1c/0x1ac loop_process_work+0xc8c/0xfd4 loop_rootcg_workfn+0x24/0x34 process_one_work+0x244/0x558 worker_thread+0x400/0x8fc kthread+0x16c/0x1e0 ret_from_fork+0x10/0x20

Affected products

Linux/Linux Kernel Rtllm-fuzzy
osv-coords83 versions
pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/kernel-livepatch-SLE15-SP4_Update_41&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4 pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_27&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Manager%20Server%204.3
< 5.14.21-150400.24.167.1+ 82 more
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150500.55.110.1.150500.6.51.3
- (no CPE)range: < 5.14.21-150500.55.110.1.150500.6.51.3
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150500.55.110.1.150500.6.51.3
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150500.55.110.1.150500.6.51.3
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150500.55.110.1.150500.6.51.3
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150400.24.167.1.150400.24.84.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 1-150400.9.3.1
- (no CPE)range: < 1-150500.11.7.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.15.121.1
- (no CPE)range: < 5.14.21-150400.15.121.1
- (no CPE)range: < 5.14.21-150500.13.97.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.15.121.1
- (no CPE)range: < 5.14.21-150400.15.121.1
- (no CPE)range: < 5.14.21-150500.13.97.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150400.24.167.1
- (no CPE)range: < 5.14.21-150500.55.110.1
- (no CPE)range: < 5.14.21-150400.24.167.1
Linux/Linuxcpe-rescue
Range: 4.4

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

News mentions

No linked articles in our index yet.

cvss	0.000
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000