UBUNTU-CVE-2024-49935: Medium severity ubuntu/linux vulnerability

Q: Which Ubuntu kernel packages are listed as affected?

The listed packages are ubuntu/linux, ubuntu/linux-fips, ubuntu/linux-aws, ubuntu/linux-azure, ubuntu/linux-aws-fips, ubuntu/linux-azure-fips, ubuntu/linux-gcp, and ubuntu/linux-gcp-fips.

Q: What level of access does an attacker need?

The severity vector indicates local access and low privileges are required. No user interaction is required.

Q: What is the likely security impact?

The reported behavior is a kernel crash caused by an invalid memory access in the ACPI PAD path. The severity vector indicates high impact to availability, with no indicated confidentiality or integrity impact.

Q: What evidence could indicate that a system has encountered this issue?

Affected systems may log a kernel paging-request failure, with cpumask_clear_cpu() and exit_round_robin() in the call path. The supplied crash example also identifies the acpi_pad thread and power_saving_thread in the acpi_pad module.

Published Oct 21, 2024

Updated

In the Linux kernel, the following vulnerability has been resolved: ACPI: PAD: fix crash in exitroundrobin() The kernel occasionally crashes in cpumaskclearcpu(), which is called within exitroundrobin(), because when executing clearbit(nr, addr) with nr set to 0xffffffff, the address calculation may cause misalignment within the memory, leading to access to an invalid memory address. ---------- BUG: unable to handle kernel paging request at ffffffffe0740618 ... CPU: 3 PID: 2919323 Comm: acpipad/14 Kdump: loaded Tainted: G OE X --------- - - 4.18.0-425.19.2.el87.x8664 #1 ... RIP: 0010:powersavingthread+0x313/0x411 [acpipad] Code: 89 cd 48 89 d3 eb d1 48 c7 c7 55 70 72 c0 e8 64 86 b0 e4 c6 05 0d a1 02 00 01 e9 bc fd ff ff 45 89 e4 42 8b 04 a5 20 82 72 c0 <f0> 48 0f b3 05 f4 9c 01 00 42 c7 04 a5 20 82 72 c0 ff ff ff ff 31 RSP: 0018:ff72a5d51fa77ec8 EFLAGS: 00010202 RAX: 00000000ffffffff RBX: ff462981e5d8cb80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 RBP: ff46297556959d80 R08: 0000000000000382 R09: ff46297c8d0f38d8 R10: 0000000000000000 R11: 0000000000000001 R12: 000000000000000e R13: 0000000000000000 R14: ffffffffffffffff R15: 000000000000000e FS: 0000000000000000(0000) GS:ff46297a800c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffe0740618 CR3: 0000007e20410004 CR4: 0000000000771ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: ? acpipadadd+0x120/0x120 [acpipad] kthread+0x10b/0x130 ? setkthreadstruct+0x50/0x50 retfromfork+0x1f/0x40 ... CR2: ffffffffe0740618 crash> dis -lr ffffffffc0726923 ... /usr/src/debug/kernel-4.18.0-425.19.2.el87/linux-4.18.0-425.19.2.el87.x8664/./include/linux/cpumask.h: 114 0xffffffffc0726918 <powersavingthread+776>: mov %r12d,%r12d /usr/src/debug/kernel-4.18.0-425.19.2.el87/linux-4.18.0-425.19.2.el87.x8664/./include/linux/cpumask.h: 325 0xffffffffc072691b <powersavingthread+779>: mov -0x3f8d7de0(,%r12,4),%eax /usr/src/debug/kernel-4.18.0-425.19.2.el87/linux-4.18.0-425.19.2.el87.x8664/./arch/x86/include/asm/bitops.h: 80 0xffffffffc0726923 <powersavingthread+787>: lock btr %rax,0x19cf4(%rip) # 0xffffffffc0740620 <padbusycpusbits> crash> px tskincpu[14] $66 = 0xffffffff crash> px 0xffffffffc072692c+0x19cf4 $99 = 0xffffffffc0740620 crash> sym 0xffffffffc0740620 ffffffffc0740620 (b) padbusycpusbits [acpipad] crash> px padbusycpusbits[0] $42 = 0xfffc0 ---------- To fix this, ensure that tskincpu[tskindex] != -1 before calling cpumaskclearcpu() in exitroundrobin(), just as it is done in roundrobincpu(). [ rjw: Subject edit, avoid updates to the same value ]

Affected Software

202 affected componentsFixes available

ubuntu/linux*

ubuntu/linux-aws<4.4.0-1150.156

4.4.0-1150.156

ubuntu/linux-azure<4.15.0-1195.210~14.04.1

4.15.0-1195.210~14.04.1

ubuntu/linux-lts-xenial<4.4.0-276.310~14.04.1

4.4.0-276.310~14.04.1

ubuntu/linux<4.4.0-276.310

4.4.0-276.310

ubuntu/linux-aws<4.4.0-1188.203

4.4.0-1188.203

ubuntu/linux-aws-hwe<4.15.0-1187.200~16.04.1

4.15.0-1187.200~16.04.1

ubuntu/linux-azure<4.15.0-1195.210~16.04.1

4.15.0-1195.210~16.04.1

ubuntu/linux-gcp<4.15.0-1180.197~16.04.1

4.15.0-1180.197~16.04.1

ubuntu/linux-hwe<4.15.0-245.257~16.04.1

4.15.0-245.257~16.04.1

ubuntu/linux-kvm<4.4.0-1151.162

4.4.0-1151.162

ubuntu/linux-oracle<4.15.0-1149.160~16.04.1

4.15.0-1149.160~16.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-fips<4.4.0-1120.127

4.4.0-1120.127

ubuntu/linux-fips*

ubuntu/linux<4.15.0-245.257

4.15.0-245.257

ubuntu/linux-aws<4.15.0-1187.200

4.15.0-1187.200

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1153.163~18.04.1

5.4.0-1153.163~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15<4.15.0-1195.210

4.15.0-1195.210

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1156.163~18.04.1

5.4.0-1156.163~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15<4.15.0-1180.197

4.15.0-1180.197

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1156.165~18.04.1

5.4.0-1156.165~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-224.244~18.04.1

5.4.0-224.244~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1099.104~18.04.1

5.4.0-1099.104~18.04.1

ubuntu/linux-kvm<4.15.0-1169.174

4.15.0-1169.174

ubuntu/linux-oem*

ubuntu/linux-oracle<4.15.0-1149.160

4.15.0-1149.160

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1151.161~18.04.1

5.4.0-1151.161~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1136.149~18.04.1

5.4.0-1136.149~18.04.1

ubuntu/linux-aws-fips<4.15.0-2125.131

4.15.0-2125.131

ubuntu/linux-azure-fips<4.15.0-2104.110

4.15.0-2104.110

ubuntu/linux-fips<4.15.0-1142.154

4.15.0-1142.154

ubuntu/linux-gcp-fips<4.15.0-2088.94

4.15.0-2088.94

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-5.15<5.15.0-1073.79~20.04.1

5.15.0-1073.79~20.04.1

ubuntu/linux-azure-5.15<5.15.0-1078.87~20.04.1

5.15.0-1078.87~20.04.1

ubuntu/linux-gcp-5.15<5.15.0-1072.80~20.04.1

5.15.0-1072.80~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-127.137~20.04.1

5.15.0-127.137~20.04.1

ubuntu/linux-ibm-5.15<5.15.0-1066.69~20.04.1

5.15.0-1066.69~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1071.77~20.04.1

5.15.0-1071.77~20.04.1

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-127.137~20.04.1

5.15.0-127.137~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1032.32~20.04.1

5.15.0-1032.32~20.04.1

ubuntu/linux-oracle-5.15<5.15.0-1071.77~20.04.1

5.15.0-1071.77~20.04.1

ubuntu/linux-riscv-5.15<5.15.0-1069.73~20.04.1

5.15.0-1069.73~20.04.1

ubuntu/linux<5.4.0-224.244

5.4.0-224.244

ubuntu/linux-aws<5.4.0-1153.163

5.4.0-1153.163

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.8*

ubuntu/linux-azure<5.4.0-1156.163

5.4.0-1156.163

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-bluefield<5.4.0-1112.119

5.4.0-1112.119

ubuntu/linux-gcp<5.4.0-1156.165

5.4.0-1156.165

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<5.4.0-1099.104

5.4.0-1099.104

ubuntu/linux-intel-5.13*

ubuntu/linux-iot<5.4.0-1057.60

5.4.0-1057.60

ubuntu/linux-kvm<5.4.0-1140.149

5.4.0-1140.149

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle<5.4.0-1151.161

5.4.0-1151.161

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi<5.4.0-1136.149

5.4.0-1136.149

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.8*

ubuntu/linux-xilinx-zynqmp<5.4.0-1071.75

5.4.0-1071.75

ubuntu/linux-aws-fips<5.4.0-1153.163+fips1

5.4.0-1153.163+fips1

ubuntu/linux-azure-fips<5.4.0-1157.164+fips1

5.4.0-1157.164+fips1

ubuntu/linux-fips<5.4.0-1127.137

5.4.0-1127.137

ubuntu/linux-gcp-fips<5.4.0-1156.165+fips1

5.4.0-1156.165+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-127.137

5.15.0-127.137

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1073.79

5.15.0-1073.79

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1023.25~22.04.1

6.8.0-1023.25~22.04.1

ubuntu/linux-azure<5.15.0-1078.87

5.15.0-1078.87

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1025.30~22.04.1

6.8.0-1025.30~22.04.1

ubuntu/linux-azure-fde<5.15.0-1078.87.1

5.15.0-1078.87.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1072.80

5.15.0-1072.80

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1024.26~22.04.1

6.8.0-1024.26~22.04.1

ubuntu/linux-gke<5.15.0-1070.76

5.15.0-1070.76

ubuntu/linux-gkeop<5.15.0-1056.63

5.15.0-1056.63

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-57.59~22.04.1

6.8.0-57.59~22.04.1

ubuntu/linux-ibm<5.15.0-1066.69

5.15.0-1066.69

ubuntu/linux-ibm-6.8<6.8.0-1023.23~22.04.1

6.8.0-1023.23~22.04.1

ubuntu/linux-intel-iotg<5.15.0-1071.77

5.15.0-1071.77

ubuntu/linux-kvm<5.15.0-1070.75

5.15.0-1070.75

ubuntu/linux-lowlatency<5.15.0-127.137

5.15.0-127.137

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-54.56.1~22.04.1

6.8.0-54.56.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1068.69

5.15.0-1068.69

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1022.25~22.04.2

6.8.0-1022.25~22.04.2

ubuntu/linux-nvidia-tegra<5.15.0-1032.32

5.15.0-1032.32

ubuntu/linux-nvidia-tegra-igx<5.15.0-1020.20

5.15.0-1020.20

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1071.77

5.15.0-1071.77

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1020.21~22.04.1

6.8.0-1020.21~22.04.1

ubuntu/linux-raspi<5.15.0-1066.69

5.15.0-1066.69

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-53.55.1~22.04.1

6.8.0-53.55.1~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1039.43

5.15.0-1039.43

ubuntu/linux-bluefield<5.15.0-1057.59

5.15.0-1057.59

ubuntu/linux-intel-iot-realtime<5.15.0-1066.68

5.15.0-1066.68

ubuntu/linux-realtime<5.15.0-1074.82

5.15.0-1074.82

ubuntu/linux-realtime-6.8<6.8.1-1016.17~22.04.1

6.8.1-1016.17~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1073.79+fips1

5.15.0-1073.79+fips1

ubuntu/linux-azure-fips<5.15.0-1078.87+fips1

5.15.0-1078.87+fips1

ubuntu/linux-fips<5.15.0-127.137+fips1

5.15.0-127.137+fips1

ubuntu/linux-gcp-fips<5.15.0-1072.80+fips1

5.15.0-1072.80+fips1

ubuntu/linux<6.8.0-54.56

6.8.0-54.56

ubuntu/linux-aws<6.8.0-1023.25

6.8.0-1023.25

ubuntu/linux-azure<6.8.0-1025.30

6.8.0-1025.30

ubuntu/linux-azure-6.11<6.11.0-1012.12~24.04.1

6.11.0-1012.12~24.04.1

ubuntu/linux-azure-nvidia<6.8.0-1014.15

6.8.0-1014.15

ubuntu/linux-gcp<6.8.0-1024.26

6.8.0-1024.26

ubuntu/linux-gcp-6.11<6.11.0-1011.11~24.04.1

6.11.0-1011.11~24.04.1

ubuntu/linux-gke<6.8.0-1019.23

6.8.0-1019.23

ubuntu/linux-gkeop<6.8.0-1006.8

6.8.0-1006.8

ubuntu/linux-ibm<6.8.0-1022.22

6.8.0-1022.22

ubuntu/linux-lowlatency<6.8.0-54.56.1

6.8.0-54.56.1

ubuntu/linux-nvidia<6.8.0-1022.25

6.8.0-1022.25

ubuntu/linux-nvidia-6.11<6.11.0-1007.7

6.11.0-1007.7

ubuntu/linux-nvidia-lowlatency<6.8.0-1022.25.2

6.8.0-1022.25.2

ubuntu/linux-oem-6.11<6.11.0-1015.15

6.11.0-1015.15

ubuntu/linux-oem-6.8<6.8.0-1024.24

6.8.0-1024.24

ubuntu/linux-oracle<6.8.0-1020.21

6.8.0-1020.21

ubuntu/linux-raspi<6.8.0-1019.23

6.8.0-1019.23

ubuntu/linux-realtime*

ubuntu/linux-riscv<6.8.0-53.55.1

6.8.0-53.55.1

ubuntu/linux-xilinx<6.8.0-1017.18

6.8.0-1017.18

ubuntu/linux-raspi-realtime<6.8.0-2018.19

6.8.0-2018.19

ubuntu/linux-realtime<6.8.1-1016.17

6.8.1-1016.17

ubuntu/linux-fips<6.8.0-78.78+fips1

6.8.0-78.78+fips1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1150.156
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1195.210~14.04.1
Upgrade
Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.
Fixed in 4.4.0-276.310~14.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.4.0-276.310
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1188.203
Upgrade
Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-1187.200~16.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1195.210~16.04.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 4.15.0-1180.197~16.04.1
Upgrade
Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-245.257~16.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.4.0-1151.162
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1149.160~16.04.1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.4.0-1120.127
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.15.0-245.257
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.15.0-1187.200
Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1153.163~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1195.210
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1156.163~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1180.197
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1156.165~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-224.244~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1099.104~18.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.15.0-1169.174
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1149.160
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1151.161~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1136.149~18.04.1
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2125.131
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2104.110
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-1142.154
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2088.94
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1073.79~20.04.1
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1078.87~20.04.1
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1072.80~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-127.137~20.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1066.69~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1071.77~20.04.1
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-127.137~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1032.32~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1071.77~20.04.1
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1069.73~20.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-224.244
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Fixed in 5.4.0-1153.163
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Fixed in 5.4.0-1156.163
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Fixed in 5.4.0-1112.119
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Fixed in 5.4.0-1156.165
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Fixed in 5.4.0-1099.104
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Fixed in 5.4.0-1057.60
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Fixed in 5.4.0-1140.149
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Fixed in 5.4.0-1151.161
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Fixed in 5.4.0-1136.149
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Fixed in 5.4.0-1071.75
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Fixed in 5.4.0-1153.163+fips1
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Fixed in 5.4.0-1157.164+fips1
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Fixed in 5.4.0-1127.137
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Fixed in 5.4.0-1156.165+fips1
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Fixed in 5.15.0-127.137
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Fixed in 5.15.0-1073.79
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Fixed in 6.8.0-1023.25~22.04.1
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Fixed in 5.15.0-1078.87
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Fixed in 6.8.0-1025.30~22.04.1
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Fixed in 5.15.0-1078.87.1
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Fixed in 5.15.0-1072.80
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Fixed in 6.8.0-1024.26~22.04.1
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Fixed in 5.15.0-1070.76
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Fixed in 5.15.0-1056.63
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Fixed in 6.8.0-57.59~22.04.1
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Fixed in 5.15.0-1066.69
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Fixed in 6.8.0-1023.23~22.04.1
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Fixed in 5.15.0-1071.77
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Fixed in 5.15.0-1070.75
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Fixed in 5.15.0-127.137
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Fixed in 6.8.0-54.56.1~22.04.1
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Fixed in 5.15.0-1068.69
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Fixed in 6.8.0-1022.25~22.04.2
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Fixed in 5.15.0-1032.32
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Fixed in 5.15.0-1020.20
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Fixed in 5.15.0-1071.77
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Fixed in 6.8.0-1020.21~22.04.1
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Fixed in 5.15.0-1066.69
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Fixed in 6.8.0-53.55.1~22.04.1
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Fixed in 5.15.0-1039.43
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Fixed in 5.15.0-1057.59
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Fixed in 5.15.0-1066.68
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Fixed in 5.15.0-1074.82
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Fixed in 6.8.1-1016.17~22.04.1
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Fixed in 5.15.0-1073.79+fips1
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Fixed in 5.15.0-1078.87+fips1
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Fixed in 5.15.0-127.137+fips1
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Fixed in 5.15.0-1072.80+fips1
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Fixed in 6.8.0-54.56
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Fixed in 6.8.0-1023.25
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Fixed in 6.8.0-1025.30
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Fixed in 6.11.0-1012.12~24.04.1
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Fixed in 6.8.0-1014.15
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Fixed in 6.8.0-1024.26
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Fixed in 6.11.0-1011.11~24.04.1
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Fixed in 6.8.0-1019.23
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Fixed in 6.8.0-1006.8
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Fixed in 6.8.0-1022.22
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Fixed in 6.8.0-54.56.1
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Fixed in 6.8.0-1022.25
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Fixed in 6.11.0-1007.7
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Fixed in 6.8.0-1022.25.2
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Fixed in 6.11.0-1015.15
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Fixed in 6.8.0-1024.24
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Fixed in 6.8.0-1020.21
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Fixed in 6.8.0-1019.23
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Fixed in 6.8.0-53.55.1
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Fixed in 6.8.0-1017.18
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Fixed in 6.8.0-2018.19
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Fixed in 6.8.1-1016.17
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Fixed in 6.8.0-78.78+fips1
Compensating control
In the Linux kernel ACPI PAD module, ensure that tsk_in_cpu[tsk_index] != -1 before calling cpumask_clear_cpu() in exit_round_robin(), as implemented in round_robin_cpu().

Event History

Oct 21, 2024

CVE Published

via OSV·06:15 PM

Data Sourced

via OSV·06:15 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

Which Ubuntu kernel packages are listed as affected?

The listed packages are ubuntu/linux, ubuntu/linux-fips, ubuntu/linux-aws, ubuntu/linux-azure, ubuntu/linux-aws-fips, ubuntu/linux-azure-fips, ubuntu/linux-gcp, and ubuntu/linux-gcp-fips.

What level of access does an attacker need?

The severity vector indicates local access and low privileges are required. No user interaction is required.

What is the likely security impact?

The reported behavior is a kernel crash caused by an invalid memory access in the ACPI PAD path. The severity vector indicates high impact to availability, with no indicated confidentiality or integrity impact.

What evidence could indicate that a system has encountered this issue?

Affected systems may log a kernel paging-request failure, with cpumask_clear_cpu() and exit_round_robin() in the call path. The supplied crash example also identifies the acpi_pad thread and power_saving_thread in the acpi_pad module.

UBUNTU-CVE-2024-49935: Medium severity ubuntu/linux vulnerability

Affected Software

Remediation

Event History

Frequently Asked Questions

Which Ubuntu kernel packages are listed as affected?

What level of access does an attacker need?

What is the likely security impact?

What evidence could indicate that a system has encountered this issue?

Company

Resources

Contact

Frequently Asked Questions

Which Ubuntu kernel packages are listed as affected?

What level of access does an attacker need?

What is the likely security impact?

What evidence could indicate that a system has encountered this issue?