UBUNTU-CVE-2025-22020: Use After Free

Q: Which systems are exposed to this issue?

The affected software list includes Ubuntu linux, linux-aws-fips, linux-azure-fips, linux-fips, linux-gcp-fips, linux-azure, linux-gcp, and linux-oracle packages. The flaw is in the rtsx_usb_ms memstick driver.

Q: What condition triggers the vulnerable code path?

The reported use-after-free occurs in the rtsx_usb_ms_poll_card workqueue handler while the rtsx_usb_ms driver is being removed. This indicates exposure depends on use of the affected Realtek USB Memory Stick driver and a driver-removal or device-disconnection scenario.

Q: What is the potential impact?

The vulnerability is a use-after-free that can cause a kernel crash, as demonstrated by the KASAN report. The supplied severity vector rates confidentiality, integrity, and availability impact as high.

Published Apr 16, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved: memstick: rtsxusbms: Fix slab-use-after-free in rtsxusbmsdrvremove This fixes the following crash: ================================================================== BUG: KASAN: slab-use-after-free in rtsxusbmspollcard+0x159/0x200 [rtsxusbms] Read of size 8 at addr ffff888136335380 by task kworker/6:0/140241 CPU: 6 UID: 0 PID: 140241 Comm: kworker/6:0 Kdump: loaded Tainted: G E 6.14.0-rc6+ #1 Tainted: [E]=UNSIGNEDMODULE Hardware name: LENOVO 30FNA1V7CW/1057, BIOS S0EKT54A 07/01/2024 Workqueue: events rtsxusbmspollcard [rtsxusbms] Call Trace: <TASK> dumpstacklvl+0x51/0x70 printaddressdescription.constprop.0+0x27/0x320 ? rtsxusbmspollcard+0x159/0x200 [rtsxusbms] printreport+0x3e/0x70 kasanreport+0xab/0xe0 ? rtsxusbmspollcard+0x159/0x200 [rtsxusbms] rtsxusbmspollcard+0x159/0x200 [rtsxusbms] ? pfxrtsxusbmspollcard+0x10/0x10 [rtsxusbms] ? pfxschedule+0x10/0x10 ? kickpool+0x3b/0x270 processonework+0x357/0x660 workerthread+0x390/0x4c0 ? pfxworkerthread+0x10/0x10 kthread+0x190/0x1d0 ? pfxkthread+0x10/0x10 retfromfork+0x2d/0x50 ? pfxkthread+0x10/0x10 retfromforkasm+0x1a/0x30 </TASK> Allocated by task 161446: kasansavestack+0x20/0x40 kasansavetrack+0x10/0x30 kasankmalloc+0x7b/0x90 kmallocnoprof+0x1a7/0x470 memstickallochost+0x1f/0xe0 [memstick] rtsxusbmsdrvprobe+0x47/0x320 [rtsxusbms] platformprobe+0x60/0xe0 calldriverprobe+0x35/0x120 reallyprobe+0x123/0x410 driverprobedevice+0xc7/0x1e0 driverprobedevice+0x49/0xf0 deviceattachdriver+0xc6/0x160 busforeachdrv+0xe4/0x160 deviceattach+0x13a/0x2b0 busprobedevice+0xbd/0xd0 deviceadd+0x4a5/0x760 platformdeviceadd+0x189/0x370 mfdadddevice+0x587/0x5e0 mfdadddevices+0xb1/0x130 rtsxusbprobe+0x28e/0x2e0 [rtsxusb] usbprobeinterface+0x15c/0x460 calldriverprobe+0x35/0x120 reallyprobe+0x123/0x410 driverprobedevice+0xc7/0x1e0 driverprobedevice+0x49/0xf0 deviceattachdriver+0xc6/0x160 busforeachdrv+0xe4/0x160 deviceattach+0x13a/0x2b0 rebindmarkedinterfaces.isra.0+0xcc/0x110 usbresetdevice+0x352/0x410 usbdevdoioctl+0xe5c/0x1860 usbdevioctl+0xa/0x20 x64sysioctl+0xc5/0xf0 dosyscall64+0x59/0x170 entrySYSCALL64afterhwframe+0x76/0x7e Freed by task 161506: kasansavestack+0x20/0x40 kasansavetrack+0x10/0x30 kasansavefreeinfo+0x36/0x60 kasanslabfree+0x34/0x50 kfree+0x1fd/0x3b0 devicerelease+0x56/0xf0 kobjectcleanup+0x73/0x1c0 rtsxusbmsdrvremove+0x13d/0x220 [rtsxusbms] platformremove+0x2f/0x50 devicereleasedriverinternal+0x24b/0x2e0 busremovedevice+0x124/0x1d0 devicedel+0x239/0x530 platformdevicedel.part.0+0x19/0xe0 platformdeviceunregister+0x1c/0x40 mfdremovedevicesfn+0x167/0x170 deviceforeachchildreverse+0xc9/0x130 mfdremovedevices+0x6e/0xa0 rtsxusbdisconnect+0x2e/0xd0 [rtsxusb] usbunbindinterface+0xf3/0x3f0 devicereleasedriverinternal+0x24b/0x2e0 procdisconnectclaim+0x13d/0x220 usbdevdoioctl+0xb5e/0x1860 usbdevioctl+0xa/0x20 x64sysioctl+0xc5/0xf0 dosyscall64+0x59/0x170 entrySYSCALL64afterhwframe+0x76/0x7e Last potentially related work creation: kasansavestack+0x20/0x40 kasanrecordauxstack+0x85/0x90 insertwork+0x29/0x100 queuework+0x34a/0x540 calltimerfn+0x2a/0x160 expiretimers+0x5f/0x1f0 runtimerbase.part.0+0x1b6/0x1e0 runtimersoftirq+0x8b/0xe0 handlesoftirqs+0xf9/0x360 irqexitrcu+0x114/0x130 sysvecapictimerinterrupt+0x72/0x90 asmsysvecapictimerinterrupt+0x16/0x20 Second to last potentially related work creation: kasansavestack+0x20/0x40 kasanrecordauxstack+0x85/0x90 insertwork+0x29/0x100 queuework+0x34a/0x540 calltimerfn+0x2a/0x160 expiretimers+0x5f/0x1f0 runtimerbase.part.0+0x1b6/0x1e0 runtimersoftirq+0x8b/0xe0 handlesoftirqs+0xf9/0x ---truncated---

Affected Software

206 affected componentsFixes available

ubuntu/linux-azure*

ubuntu/linux-aws-hwe*

ubuntu/linux-azure*

ubuntu/linux-gcp*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-oracle*

ubuntu/linux*

ubuntu/linux-aws*

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1147.157~18.04.1

5.4.0-1147.157~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1152.159~18.04.1

5.4.0-1152.159~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1150.159~18.04.1

5.4.0-1150.159~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-218.238~18.04.1

5.4.0-218.238~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1093.98~18.04.1

5.4.0-1093.98~18.04.1

ubuntu/linux-kvm*

ubuntu/linux-oem*

ubuntu/linux-oracle*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1145.155~18.04.1

5.4.0-1145.155~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1130.143~18.04.1

5.4.0-1130.143~18.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.4.0-218.238

5.4.0-218.238

ubuntu/linux-aws<5.4.0-1147.157

5.4.0-1147.157

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.15<5.15.0-1086.93~20.04.1

5.15.0-1086.93~20.04.1

ubuntu/linux-aws-5.8*

ubuntu/linux-azure<5.4.0-1152.159

5.4.0-1152.159

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.15<5.15.0-1091.100~20.04.1

5.15.0-1091.100~20.04.1

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-bluefield<5.4.0-1106.113

5.4.0-1106.113

ubuntu/linux-gcp<5.4.0-1150.159

5.4.0-1150.159

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.15<5.15.0-1085.94~20.04.1

5.15.0-1085.94~20.04.1

ubuntu/linux-gcp-5.8*

ubuntu/linux-gke*

ubuntu/linux-gke-5.15*

ubuntu/linux-gkeop*

ubuntu/linux-gkeop-5.15*

ubuntu/linux-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.15<5.15.0-142.152~20.04.1

5.15.0-142.152~20.04.1

ubuntu/linux-hwe-5.8*

ubuntu/linux-ibm<5.4.0-1093.98

5.4.0-1093.98

ubuntu/linux-ibm-5.15<5.15.0-1078.81~20.04.1

5.15.0-1078.81~20.04.1

ubuntu/linux-intel-5.13*

ubuntu/linux-intel-iotg-5.15<5.15.0-1083.89~20.04.1

5.15.0-1083.89~20.04.1

ubuntu/linux-iot<5.4.0-1051.54

5.4.0-1051.54

ubuntu/linux-kvm<5.4.0-1134.143

5.4.0-1134.143

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-142.152~20.04.1

5.15.0-142.152~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1039.39~20.04.1

5.15.0-1039.39~20.04.1

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle<5.4.0-1145.155

5.4.0-1145.155

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.15<5.15.0-1083.89~20.04.1

5.15.0-1083.89~20.04.1

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi<5.4.0-1130.143

5.4.0-1130.143

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.15<5.15.0-1081.85~20.04.1

5.15.0-1081.85~20.04.1

ubuntu/linux-riscv-5.8*

ubuntu/linux-xilinx-zynqmp<5.4.0-1065.69

5.4.0-1065.69

ubuntu/linux-aws-fips<5.4.0-1147.157+fips1

5.4.0-1147.157+fips1

ubuntu/linux-azure-fips<5.4.0-1153.160+fips1

5.4.0-1153.160+fips1

ubuntu/linux-fips<5.4.0-1121.131

5.4.0-1121.131

ubuntu/linux-gcp-fips<5.4.0-1150.159+fips1

5.4.0-1150.159+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-142.152

5.15.0-142.152

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1086.93

5.15.0-1086.93

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1041.43~22.04.1

6.8.0-1041.43~22.04.1

ubuntu/linux-azure<5.15.0-1091.100

5.15.0-1091.100

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1041.47~22.04.1

6.8.0-1041.47~22.04.1

ubuntu/linux-azure-fde<5.15.0-1091.100.1

5.15.0-1091.100.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1085.94

5.15.0-1085.94

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1042.45~22.04.1

6.8.0-1042.45~22.04.1

ubuntu/linux-gke<5.15.0-1083.89

5.15.0-1083.89

ubuntu/linux-gkeop<5.15.0-1068.76

5.15.0-1068.76

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-86.87~22.04.1

6.8.0-86.87~22.04.1

ubuntu/linux-ibm<5.15.0-1078.81

5.15.0-1078.81

ubuntu/linux-ibm-6.8<6.8.0-1039.39~22.04.1

6.8.0-1039.39~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1081.87

5.15.0-1081.87

ubuntu/linux-kvm<5.15.0-1082.87

5.15.0-1082.87

ubuntu/linux-lowlatency<5.15.0-142.152

5.15.0-142.152

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-86.87.1~22.04.1

6.8.0-86.87.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1080.81

5.15.0-1080.81

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1041.44~22.04.2

6.8.0-1041.44~22.04.2

ubuntu/linux-nvidia-tegra<5.15.0-1039.39

5.15.0-1039.39

ubuntu/linux-nvidia-tegra-igx<5.15.0-1028.28

5.15.0-1028.28

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1083.89

5.15.0-1083.89

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1038.39~22.04.1

6.8.0-1038.39~22.04.1

ubuntu/linux-raspi<5.15.0-1080.83

5.15.0-1080.83

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-86.87~22.04.1

6.8.0-86.87~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1050.54

5.15.0-1050.54

ubuntu/linux-bluefield<5.15.0-1069.71

5.15.0-1069.71

ubuntu/linux-intel-iot-realtime<5.15.0-1079.81

5.15.0-1079.81

ubuntu/linux-realtime<5.15.0-1086.95

5.15.0-1086.95

ubuntu/linux-realtime-6.8<6.8.1-1036.37~22.04.1

6.8.1-1036.37~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1086.93+fips1

5.15.0-1086.93+fips1

ubuntu/linux-azure-fips<5.15.0-1091.100+fips1

5.15.0-1091.100+fips1

ubuntu/linux-fips<5.15.0-142.152+fips1

5.15.0-142.152+fips1

ubuntu/linux-gcp-fips<5.15.0-1085.94+fips1

5.15.0-1085.94+fips1

ubuntu/linux<6.8.0-86.87

6.8.0-86.87

ubuntu/linux-aws<6.8.0-1041.43

6.8.0-1041.43

ubuntu/linux-azure<6.8.0-1041.47

6.8.0-1041.47

ubuntu/linux-azure-6.11<6.11.0-1018.18~24.04.1

6.11.0-1018.18~24.04.1

ubuntu/linux-azure-nvidia<6.8.0-1029.32

6.8.0-1029.32

ubuntu/linux-gcp<6.8.0-1042.45

6.8.0-1042.45

ubuntu/linux-gcp-6.11<6.11.0-1016.16~24.04.1

6.11.0-1016.16~24.04.1

ubuntu/linux-gke<6.8.0-1038.43

6.8.0-1038.43

ubuntu/linux-gkeop<6.8.0-1025.28

6.8.0-1025.28

ubuntu/linux-hwe-6.11<6.11.0-28.28~24.04.1

6.11.0-28.28~24.04.1

ubuntu/linux-ibm<6.8.0-1039.39

6.8.0-1039.39

ubuntu/linux-intel*

ubuntu/linux-lowlatency<6.8.0-86.87.1

6.8.0-86.87.1

ubuntu/linux-lowlatency-hwe-6.11<6.11.0-1015.16~24.04.2

6.11.0-1015.16~24.04.2

ubuntu/linux-nvidia<6.8.0-1041.44

6.8.0-1041.44

ubuntu/linux-nvidia-6.11<6.11.0-1012.12

6.11.0-1012.12

ubuntu/linux-nvidia-lowlatency<6.8.0-1041.44.1

6.8.0-1041.44.1

ubuntu/linux-nvidia-tegra<6.8.0-1012.12

6.8.0-1012.12

ubuntu/linux-oem-6.11<6.11.0-1024.24

6.11.0-1024.24

ubuntu/linux-oem-6.8*

ubuntu/linux-oracle<6.8.0-1038.39

6.8.0-1038.39

ubuntu/linux-raspi<6.8.0-1041.45

6.8.0-1041.45

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-xilinx<6.8.0-1018.19

6.8.0-1018.19

ubuntu/linux-bluefield<6.8.0-1012.16

6.8.0-1012.16

ubuntu/linux-raspi-realtime<6.8.0-2032.33

6.8.0-2032.33

ubuntu/linux-realtime<6.8.1-1036.37

6.8.1-1036.37

ubuntu/linux-aws-fips<6.8.0-1041.43+fips1

6.8.0-1041.43+fips1

ubuntu/linux-azure-fips<6.8.0-1044.50+fips1

6.8.0-1044.50+fips1

ubuntu/linux-fips<6.8.0-86.87+fips1

6.8.0-86.87+fips1

ubuntu/linux-gcp-fips<6.8.0-1042.45+fips1

6.8.0-1042.45+fips1

ubuntu/linux-azure-fde*

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1147.157~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.159~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1150.159~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-218.238~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1093.98~18.04.1
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1145.155~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1130.143~18.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-218.238
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1147.157
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1086.93~20.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.159
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1091.100~20.04.1
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1106.113
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1150.159
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1085.94~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-142.152~20.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1093.98
Upgrade
Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1078.81~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1083.89~20.04.1
Upgrade
Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.
Fixed in 5.4.0-1051.54
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.4.0-1134.143
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-142.152~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1039.39~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.4.0-1145.155
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1083.89~20.04.1
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.4.0-1130.143
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1081.85~20.04.1
Upgrade
Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.
Fixed in 5.4.0-1065.69
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1147.157+fips1
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1153.160+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1121.131
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1150.159+fips1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.15.0-142.152
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.15.0-1086.93
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Fixed in 6.8.0-1041.43~22.04.1
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Fixed in 5.15.0-1091.100
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Fixed in 6.8.0-1041.47~22.04.1
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Fixed in 5.15.0-1091.100.1
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Fixed in 5.15.0-1085.94
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Fixed in 6.8.0-1042.45~22.04.1
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Fixed in 5.15.0-1083.89
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Fixed in 5.15.0-1068.76
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Fixed in 6.8.0-86.87~22.04.1
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Fixed in 5.15.0-1078.81
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Fixed in 6.8.0-1039.39~22.04.1
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Fixed in 5.15.0-1081.87
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Fixed in 5.15.0-1082.87
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Fixed in 5.15.0-142.152
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Fixed in 6.8.0-86.87.1~22.04.1
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Fixed in 5.15.0-1080.81
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Fixed in 6.8.0-1041.44~22.04.2
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Fixed in 5.15.0-1039.39
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Fixed in 5.15.0-1028.28
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Fixed in 5.15.0-1083.89
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Fixed in 6.8.0-1038.39~22.04.1
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Fixed in 5.15.0-1080.83
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Fixed in 6.8.0-86.87~22.04.1
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Fixed in 5.15.0-1050.54
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Fixed in 5.15.0-1069.71
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Fixed in 5.15.0-1079.81
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Fixed in 5.15.0-1086.95
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Fixed in 6.8.1-1036.37~22.04.1
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Fixed in 5.15.0-1086.93+fips1
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Fixed in 5.15.0-1091.100+fips1
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Fixed in 5.15.0-142.152+fips1
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Fixed in 5.15.0-1085.94+fips1
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Fixed in 6.8.0-86.87
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Fixed in 6.8.0-1041.43
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Fixed in 6.8.0-1041.47
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Fixed in 6.11.0-1018.18~24.04.1
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Fixed in 6.8.0-1029.32
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Fixed in 6.8.0-1042.45
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Fixed in 6.11.0-1016.16~24.04.1
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Fixed in 6.8.0-1038.43
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Fixed in 6.8.0-1025.28
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Fixed in 6.11.0-28.28~24.04.1
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Fixed in 6.8.0-1039.39
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Fixed in 6.8.0-86.87.1
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Fixed in 6.11.0-1015.16~24.04.2
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Fixed in 6.8.0-1041.44
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Fixed in 6.11.0-1012.12
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Fixed in 6.8.0-1041.44.1
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Fixed in 6.8.0-1012.12
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Fixed in 6.11.0-1024.24
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Fixed in 6.8.0-1038.39
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Fixed in 6.8.0-1041.45
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Fixed in 6.8.0-1018.19
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Fixed in 6.8.0-1012.16
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Fixed in 6.8.0-2032.33
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Fixed in 6.8.1-1036.37
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Fixed in 6.8.0-1041.43+fips1
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Fixed in 6.8.0-1044.50+fips1
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Fixed in 6.8.0-86.87+fips1
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Fixed in 6.8.0-1042.45+fips1

Event History

Apr 16, 2025

CVE Published

via OSV·11:15 AM

Data Sourced

via OSV·11:15 AM

DescriptionSeverityAffected Software

Frequently Asked Questions

Which systems are exposed to this issue?

The affected software list includes Ubuntu linux, linux-aws-fips, linux-azure-fips, linux-fips, linux-gcp-fips, linux-azure, linux-gcp, and linux-oracle packages. The flaw is in the rtsx_usb_ms memstick driver.

What condition triggers the vulnerable code path?

The reported use-after-free occurs in the rtsx_usb_ms_poll_card workqueue handler while the rtsx_usb_ms driver is being removed. This indicates exposure depends on use of the affected Realtek USB Memory Stick driver and a driver-removal or device-disconnection scenario.

What is the potential impact?

The vulnerability is a use-after-free that can cause a kernel crash, as demonstrated by the KASAN report. The supplied severity vector rates confidentiality, integrity, and availability impact as high.

UBUNTU-CVE-2025-22020: Use After Free

Affected Software

Remediation

Event History

Frequently Asked Questions

Which systems are exposed to this issue?

What condition triggers the vulnerable code path?

What is the potential impact?

Company

Resources

Contact

Frequently Asked Questions

Which systems are exposed to this issue?

What condition triggers the vulnerable code path?

What is the potential impact?