UBUNTU-CVE-2023-52975: Use After Free

Q: Who is realistically exposed to this issue?

Systems running the listed Ubuntu Linux kernel packages are in scope when they use the iSCSI TCP transport. The CVSS vector identifies this as a local attack requiring low privileges, rather than a network-reachable issue.

Q: What conditions are needed to trigger the flaw?

The race occurs during iSCSI session logout when another task accesses the SCSI host ipaddress sysfs attribute. Exploitation therefore depends on concurrent logout activity and access to that attribute.

Q: How can I tell whether the issue has occurred on a system?

A KASAN-enabled kernel may report a use-after-free involving iscsi_sw_tcp_host_get_param, show_host_param_ISCSI_HOST_PARAM_IPADDRESS, and _raw_spin_lock_bh. The supplied report shows the access originating from a task reading the relevant sysfs attribute during logout.

Published Mar 27, 2025

Updated

In the Linux kernel, the following vulnerability has been resolved: scsi: iscsitcp: Fix UAF during logout when accessing the shost ipaddress Bug report and analysis from Ding Hui. During iSCSI session logout, if another task accesses the shost ipaddress attr, we can get a KASAN UAF report like this: [ 276.942144] BUG: KASAN: use-after-free in rawspinlockbh+0x78/0xe0 [ 276.942535] Write of size 4 at addr ffff8881053b45b8 by task cat/4088 [ 276.943511] CPU: 2 PID: 4088 Comm: cat Tainted: G E 6.1.0-rc8+ #3 [ 276.943997] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020 [ 276.944470] Call Trace: [ 276.944943] <TASK> [ 276.945397] dumpstacklvl+0x34/0x48 [ 276.945887] printaddressdescription.constprop.0+0x86/0x1e7 [ 276.946421] printreport+0x36/0x4f [ 276.947358] kasanreport+0xad/0x130 [ 276.948234] kasancheckrange+0x35/0x1c0 [ 276.948674] rawspinlockbh+0x78/0xe0 [ 276.949989] iscsiswtcphostgetparam+0xad/0x2e0 [iscsitcp] [ 276.951765] showhostparamISCSIHOSTPARAMIPADDRESS+0xe9/0x130 [scsitransportiscsi] [ 276.952185] devattrshow+0x3f/0x80 [ 276.953005] sysfskfseqshow+0x1fb/0x3e0 [ 276.953401] seqreaditer+0x402/0x1020 [ 276.954260] vfsread+0x532/0x7b0 [ 276.955113] ksysread+0xed/0x1c0 [ 276.955952] dosyscall64+0x38/0x90 [ 276.956347] entrySYSCALL64afterhwframe+0x63/0xcd [ 276.956769] RIP: 0033:0x7f5d3a679222 [ 276.957161] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 32 c0 0b 00 e8 a5 fe 01 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89 54 24 [ 276.958009] RSP: 002b:00007ffc864d16a8 EFLAGS: 00000246 ORIGRAX: 0000000000000000 [ 276.958431] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f5d3a679222 [ 276.958857] RDX: 0000000000020000 RSI: 00007f5d3a4fe000 RDI: 0000000000000003 [ 276.959281] RBP: 00007f5d3a4fe000 R08: 00000000ffffffff R09: 0000000000000000 [ 276.959682] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000020000 [ 276.960126] R13: 0000000000000003 R14: 0000000000000000 R15: 0000557a26dada58 [ 276.960536] </TASK> [ 276.961357] Allocated by task 2209: [ 276.961756] kasansavestack+0x1e/0x40 [ 276.962170] kasansettrack+0x21/0x30 [ 276.962557] kasankmalloc+0x7e/0x90 [ 276.962923] kmalloc+0x5b/0x140 [ 276.963308] iscsiallocsession+0x28/0x840 [scsitransportiscsi] [ 276.963712] iscsisessionsetup+0xda/0xba0 [libiscsi] [ 276.964078] iscsiswtcpsessioncreate+0x1fd/0x330 [iscsitcp] [ 276.964431] iscsiifcreatesession.isra.0+0x50/0x260 [scsitransportiscsi] [ 276.964793] iscsiifrecvmsg+0xc5a/0x2660 [scsitransportiscsi] [ 276.965153] iscsiifrx+0x198/0x4b0 [scsitransportiscsi] [ 276.965546] netlinkunicast+0x4d5/0x7b0 [ 276.965905] netlinksendmsg+0x78d/0xc30 [ 276.966236] socksendmsg+0xe5/0x120 [ 276.966576] syssendmsg+0x5fe/0x860 [ 276.966923] syssendmsg+0xe0/0x170 [ 276.967300] syssendmsg+0xc8/0x170 [ 276.967666] dosyscall64+0x38/0x90 [ 276.968028] entrySYSCALL64afterhwframe+0x63/0xcd [ 276.968773] Freed by task 2209: [ 276.969111] kasansavestack+0x1e/0x40 [ 276.969449] kasansettrack+0x21/0x30 [ 276.969789] kasansavefreeinfo+0x2a/0x50 [ 276.970146] kasanslabfree+0x106/0x190 [ 276.970470] kmemcachefree+0x133/0x270 [ 276.970816] devicerelease+0x98/0x210 [ 276.971145] kobjectcleanup+0x101/0x360 [ 276.971462] iscsisessionteardown+0x3fb/0x530 [libiscsi] [ 276.971775] iscsiswtcpsessiondestroy+0xd8/0x130 [iscsitcp] [ 276.972143] iscsiifrecvmsg+0x1bf1/0x2660 [scsitransportiscsi] [ 276.972485] iscsiifrx+0x198/0x4b0 [scsitransportiscsi] [ 276.972808] netlinkunicast+0x4d5/0x7b0 [ 276.973201] netlinksendmsg+0x78d/0xc30 [ 276.973544] socksendmsg+0xe5/0x120 [ 276.973864] syssendmsg+0x5fe/0x860 [ 276.974248] sys ---truncated---

Affected Software

159 affected componentsFixes available

ubuntu/linux<3.13.0-209.260

3.13.0-209.260

ubuntu/linux-aws<4.4.0-1146.152

4.4.0-1146.152

ubuntu/linux-azure<4.15.0-1191.206~14.04.1

4.15.0-1191.206~14.04.1

ubuntu/linux-lts-xenial<4.4.0-271.305~14.04.1

4.4.0-271.305~14.04.1

ubuntu/linux<4.4.0-271.305

4.4.0-271.305

ubuntu/linux-aws<4.4.0-1184.199

4.4.0-1184.199

ubuntu/linux-aws-hwe<4.15.0-1183.196~16.04.1

4.15.0-1183.196~16.04.1

ubuntu/linux-azure<4.15.0-1191.206~16.04.1

4.15.0-1191.206~16.04.1

ubuntu/linux-gcp<4.15.0-1176.193~16.04.1

4.15.0-1176.193~16.04.1

ubuntu/linux-hwe<4.15.0-240.252~16.04.1

4.15.0-240.252~16.04.1

ubuntu/linux-kvm<4.4.0-1147.158

4.4.0-1147.158

ubuntu/linux-oracle<4.15.0-1145.156~16.04.1

4.15.0-1145.156~16.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-fips<4.4.0-1116.123

4.4.0-1116.123

ubuntu/linux-fips*

ubuntu/linux<4.15.0-240.252

4.15.0-240.252

ubuntu/linux-aws<4.15.0-1183.196

4.15.0-1183.196

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1149.159~18.04.1

5.4.0-1149.159~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15<4.15.0-1191.206

4.15.0-1191.206

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1154.161~18.04.1

5.4.0-1154.161~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15<4.15.0-1176.193

4.15.0-1176.193

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1152.161~18.04.1

5.4.0-1152.161~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-220.240~18.04.1

5.4.0-220.240~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1095.100~18.04.1

5.4.0-1095.100~18.04.1

ubuntu/linux-kvm<4.15.0-1166.171

4.15.0-1166.171

ubuntu/linux-oem*

ubuntu/linux-oracle<4.15.0-1145.156

4.15.0-1145.156

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1148.158~18.04.1

5.4.0-1148.158~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1132.145~18.04.1

5.4.0-1132.145~18.04.1

ubuntu/linux-aws-fips<4.15.0-2121.127

4.15.0-2121.127

ubuntu/linux-azure-fips<4.15.0-2100.106

4.15.0-2100.106

ubuntu/linux-fips<4.15.0-1138.149

4.15.0-1138.149

ubuntu/linux-gcp-fips<4.15.0-2084.90

4.15.0-2084.90

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-5.15<5.15.0-1036.40~20.04.1

5.15.0-1036.40~20.04.1

ubuntu/linux-azure-5.15<5.15.0-1038.45~20.04.1

5.15.0-1038.45~20.04.1

ubuntu/linux-gcp-5.15<5.15.0-1034.42~20.04.1

5.15.0-1034.42~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-72.79~20.04.1

5.15.0-72.79~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1030.35~20.04.1

5.15.0-1030.35~20.04.1

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-72.79~20.04.1

5.15.0-72.79~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1014.14~20.04.1

5.15.0-1014.14~20.04.1

ubuntu/linux-oracle-5.15<5.15.0-1035.41~20.04.1

5.15.0-1035.41~20.04.1

ubuntu/linux-riscv-5.15<5.15.0-1033.37~20.04.1

5.15.0-1033.37~20.04.1

ubuntu/linux<5.4.0-220.240

5.4.0-220.240

ubuntu/linux-aws<5.4.0-1149.159

5.4.0-1149.159

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.8*

ubuntu/linux-azure<5.4.0-1154.161

5.4.0-1154.161

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-bluefield<5.4.0-1108.115

5.4.0-1108.115

ubuntu/linux-gcp<5.4.0-1152.161

5.4.0-1152.161

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

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-5.8*

ubuntu/linux-ibm<5.4.0-1095.100

5.4.0-1095.100

ubuntu/linux-intel-5.13*

ubuntu/linux-iot<5.4.0-1053.56

5.4.0-1053.56

ubuntu/linux-kvm<5.4.0-1136.145

5.4.0-1136.145

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle<5.4.0-1147.157

5.4.0-1147.157

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi<5.4.0-1132.145

5.4.0-1132.145

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.8*

ubuntu/linux-xilinx-zynqmp<5.4.0-1067.71

5.4.0-1067.71

ubuntu/linux-aws-fips<5.4.0-1149.159+fips1

5.4.0-1149.159+fips1

ubuntu/linux-azure-fips<5.4.0-1155.162+fips1

5.4.0-1155.162+fips1

ubuntu/linux-fips<5.4.0-1123.133

5.4.0-1123.133

ubuntu/linux-gcp-fips<5.4.0-1152.161+fips1

5.4.0-1152.161+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-72.79

5.15.0-72.79

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1036.40

5.15.0-1036.40

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-azure<5.15.0-1038.45

5.15.0-1038.45

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-fde<5.15.0-1038.45.1

5.15.0-1038.45.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1034.42

5.15.0-1034.42

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gke<5.15.0-1033.38

5.15.0-1033.38

ubuntu/linux-gkeop<5.15.0-1020.25

5.15.0-1020.25

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-ibm<5.15.0-1030.33

5.15.0-1030.33

ubuntu/linux-intel-iotg<5.15.0-1030.35

5.15.0-1030.35

ubuntu/linux-kvm<5.15.0-1033.38

5.15.0-1033.38

ubuntu/linux-lowlatency<5.15.0-72.79

5.15.0-72.79

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-nvidia<5.15.0-1025.25

5.15.0-1025.25

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1035.41

5.15.0-1035.41

ubuntu/linux-oracle-6.5*

ubuntu/linux-raspi<5.15.0-1029.31

5.15.0-1029.31

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-bluefield<5.15.0-1017.19

5.15.0-1017.19

ubuntu/linux-intel-iot-realtime<5.15.0-1028.33

5.15.0-1028.33

ubuntu/linux-realtime<5.15.0-1038.41

5.15.0-1038.41

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 3.13.0-209.260
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1146.152
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1191.206~14.04.1
Upgrade
Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.
Fixed in 4.4.0-271.305~14.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.4.0-271.305
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1184.199
Upgrade
Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-1183.196~16.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1191.206~16.04.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 4.15.0-1176.193~16.04.1
Upgrade
Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-240.252~16.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.4.0-1147.158
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1145.156~16.04.1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.4.0-1116.123
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.15.0-240.252
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.15.0-1183.196
Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1149.159~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1191.206
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1154.161~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1176.193
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.161~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-220.240~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1095.100~18.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.15.0-1166.171
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1145.156
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1148.158~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1132.145~18.04.1
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2121.127
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2100.106
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-1138.149
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2084.90
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1036.40~20.04.1
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1038.45~20.04.1
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1034.42~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-72.79~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.35~20.04.1
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-72.79~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1014.14~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1035.41~20.04.1
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.37~20.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-220.240
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1149.159
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1154.161
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1108.115
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.161
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1095.100
Upgrade
Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.
Fixed in 5.4.0-1053.56
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.4.0-1136.145
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.4.0-1147.157
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.4.0-1132.145
Upgrade
Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.
Fixed in 5.4.0-1067.71
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1149.159+fips1
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1155.162+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1123.133
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1152.161+fips1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.15.0-72.79
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.15.0-1036.40
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.15.0-1038.45
Upgrade
Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.
Fixed in 5.15.0-1038.45.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.15.0-1034.42
Upgrade
Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.38
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.15.0-1020.25
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.33
Upgrade
Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.35
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.15.0-1033.38
Upgrade
Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 5.15.0-72.79
Upgrade
Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 5.15.0-1025.25
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Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.15.0-1035.41
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Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.15.0-1029.31
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Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.15.0-1017.19
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Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1028.33
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Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1038.41

Event History

Mar 27, 2025

CVE Published

via OSV·05:15 PM

Data Sourced

via OSV·05:15 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

Who is realistically exposed to this issue?

Systems running the listed Ubuntu Linux kernel packages are in scope when they use the iSCSI TCP transport. The CVSS vector identifies this as a local attack requiring low privileges, rather than a network-reachable issue.

What conditions are needed to trigger the flaw?

The race occurs during iSCSI session logout when another task accesses the SCSI host ipaddress sysfs attribute. Exploitation therefore depends on concurrent logout activity and access to that attribute.

How can I tell whether the issue has occurred on a system?

A KASAN-enabled kernel may report a use-after-free involving iscsi_sw_tcp_host_get_param, show_host_param_ISCSI_HOST_PARAM_IPADDRESS, and _raw_spin_lock_bh. The supplied report shows the access originating from a task reading the relevant sysfs attribute during logout.

UBUNTU-CVE-2023-52975: Use After Free

Affected Software

Remediation

Event History

Frequently Asked Questions

Who is realistically exposed to this issue?

What conditions are needed to trigger the flaw?

How can I tell whether the issue has occurred on a system?

Company

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Frequently Asked Questions

Who is realistically exposed to this issue?

What conditions are needed to trigger the flaw?

How can I tell whether the issue has occurred on a system?