UBUNTU-CVE-2024-35849: Infoleak

Q: Who can exploit this issue?

An attacker needs local access and low privileges. The provided CVSS vector indicates no user interaction is required.

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 is the potential impact of exploitation?

The issue can disclose sensitive information from kernel memory and can cause a denial of service. The provided vector rates confidentiality and availability impact as high, while integrity impact is none.

Q: How can I identify activity related to this vulnerability?

The supplied report shows the issue occurring in the Btrfs logical-to-inode ioctl path, specifically btrfs_ioctl_logical_to_ino() during copy_to_user(). Kernel logs or crash reports containing KMSAN kernel-infoleak messages and that function path may indicate exposure.

Published May 17, 2024

Updated

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix information leak in btrfsioctllogicaltoino() Syzbot reported the following information leak for in btrfsioctllogicaltoino(): BUG: KMSAN: kernel-infoleak in instrumentcopytouser include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in copytouser+0xbc/0x110 lib/usercopy.c:40 instrumentcopytouser include/linux/instrumented.h:114 [inline] copytouser+0xbc/0x110 lib/usercopy.c:40 copytouser include/linux/uaccess.h:191 [inline] btrfsioctllogicaltoino+0x440/0x750 fs/btrfs/ioctl.c:3499 btrfsioctl+0x714/0x1260 vfsioctl fs/ioctl.c:51 [inline] dosysioctl fs/ioctl.c:904 [inline] sesysioctl+0x261/0x450 fs/ioctl.c:890 x64sysioctl+0x96/0xe0 fs/ioctl.c:890 x64syscall+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls64.h:17 dosyscallx64 arch/x86/entry/common.c:52 [inline] dosyscall64+0xcf/0x1e0 arch/x86/entry/common.c:83 entrySYSCALL64afterhwframe+0x77/0x7f Uninit was created at: kmalloclargenode+0x231/0x370 mm/slub.c:3921 dokmallocnode mm/slub.c:3954 [inline] kmallocnode+0xb07/0x1060 mm/slub.c:3973 kmallocnode include/linux/slab.h:648 [inline] kvmallocnode+0xc0/0x2d0 mm/util.c:634 kvmalloc include/linux/slab.h:766 [inline] initdatacontainer+0x49/0x1e0 fs/btrfs/backref.c:2779 btrfsioctllogicaltoino+0x17c/0x750 fs/btrfs/ioctl.c:3480 btrfsioctl+0x714/0x1260 vfsioctl fs/ioctl.c:51 [inline] dosysioctl fs/ioctl.c:904 [inline] sesysioctl+0x261/0x450 fs/ioctl.c:890 x64sysioctl+0x96/0xe0 fs/ioctl.c:890 x64syscall+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls64.h:17 dosyscallx64 arch/x86/entry/common.c:52 [inline] dosyscall64+0xcf/0x1e0 arch/x86/entry/common.c:83 entrySYSCALL64afterhwframe+0x77/0x7f Bytes 40-65535 of 65536 are uninitialized Memory access of size 65536 starts at ffff888045a40000 This happens, because we're copying a 'struct btrfsdatacontainer' back to user-space. This btrfsdatacontainer is allocated in 'initdatacontainer()' via kvmalloc(), which does not zero-fill the memory. Fix this by using kvzalloc() which zeroes out the memory on allocation.

Affected Software

195 affected componentsFixes available

ubuntu/linux*

ubuntu/linux-aws<4.4.0-1148.154

4.4.0-1148.154

ubuntu/linux-azure<4.15.0-1193.208~14.04.1

4.15.0-1193.208~14.04.1

ubuntu/linux-lts-xenial<4.4.0-273.307~14.04.1

4.4.0-273.307~14.04.1

ubuntu/linux<4.4.0-273.307

4.4.0-273.307

ubuntu/linux-aws<4.4.0-1186.201

4.4.0-1186.201

ubuntu/linux-aws-hwe<4.15.0-1185.198~16.04.1

4.15.0-1185.198~16.04.1

ubuntu/linux-azure<4.15.0-1193.208~16.04.1

4.15.0-1193.208~16.04.1

ubuntu/linux-gcp<4.15.0-1178.195~16.04.1

4.15.0-1178.195~16.04.1

ubuntu/linux-hwe<4.15.0-242.254~16.04.1

4.15.0-242.254~16.04.1

ubuntu/linux-kvm<4.4.0-1149.160

4.4.0-1149.160

ubuntu/linux-oracle<4.15.0-1148.159~16.04.1

4.15.0-1148.159~16.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-fips<4.4.0-1119.126

4.4.0-1119.126

ubuntu/linux-fips*

ubuntu/linux<4.15.0-242.254

4.15.0-242.254

ubuntu/linux-aws<4.15.0-1185.198

4.15.0-1185.198

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1128.138~18.04.1

5.4.0-1128.138~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15<4.15.0-1193.208

4.15.0-1193.208

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1133.140~18.04.1

5.4.0-1133.140~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15<4.15.0-1178.195

4.15.0-1178.195

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1132.141~18.04.1

5.4.0-1132.141~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-189.209~18.04.1

5.4.0-189.209~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1075.80~18.04.1

5.4.0-1075.80~18.04.1

ubuntu/linux-kvm<4.15.0-1168.173

4.15.0-1168.173

ubuntu/linux-oem*

ubuntu/linux-oracle<4.15.0-1147.158

4.15.0-1147.158

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1127.136~18.04.1

5.4.0-1127.136~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1112.124~18.04.1

5.4.0-1112.124~18.04.1

ubuntu/linux-aws-fips<4.15.0-2123.129

4.15.0-2123.129

ubuntu/linux-azure-fips<4.15.0-2102.108

4.15.0-2102.108

ubuntu/linux-fips<4.15.0-1140.151

4.15.0-1140.151

ubuntu/linux-gcp-fips<4.15.0-2086.92

4.15.0-2086.92

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.4.0-189.209

5.4.0-189.209

ubuntu/linux-aws<5.4.0-1128.138

5.4.0-1128.138

ubuntu/linux-aws-5.15<5.15.0-1065.71~20.04.1

5.15.0-1065.71~20.04.1

ubuntu/linux-azure<5.4.0-1133.140

5.4.0-1133.140

ubuntu/linux-azure-5.15<5.15.0-1068.77~20.04.1

5.15.0-1068.77~20.04.1

ubuntu/linux-bluefield<5.4.0-1088.95

5.4.0-1088.95

ubuntu/linux-gcp<5.4.0-1132.141

5.4.0-1132.141

ubuntu/linux-gcp-5.15<5.15.0-1065.73~20.04.1

5.15.0-1065.73~20.04.1

ubuntu/linux-gkeop<5.4.0-1095.99

5.4.0-1095.99

ubuntu/linux-gkeop-5.15<5.15.0-1048.55~20.04.1

5.15.0-1048.55~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-116.126~20.04.1

5.15.0-116.126~20.04.1

ubuntu/linux-ibm<5.4.0-1075.80

5.4.0-1075.80

ubuntu/linux-ibm-5.15<5.15.0-1058.61~20.04.1

5.15.0-1058.61~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1060.66~20.04.1

5.15.0-1060.66~20.04.1

ubuntu/linux-iot<5.4.0-1040.41

5.4.0-1040.41

ubuntu/linux-kvm<5.4.0-1116.123

5.4.0-1116.123

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-116.126~20.04.1

5.15.0-116.126~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1027.27~20.04.1

5.15.0-1027.27~20.04.1

ubuntu/linux-oracle<5.4.0-1127.136

5.4.0-1127.136

ubuntu/linux-oracle-5.15<5.15.0-1063.69~20.04.1

5.15.0-1063.69~20.04.1

ubuntu/linux-raspi<5.4.0-1112.124

5.4.0-1112.124

ubuntu/linux-riscv-5.15<5.15.0-1061.65~20.04.1

5.15.0-1061.65~20.04.1

ubuntu/linux-xilinx-zynqmp<5.4.0-1047.51

5.4.0-1047.51

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.8*

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

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-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.8*

ubuntu/linux-intel-5.13*

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.8*

ubuntu/linux-aws-fips<5.4.0-1128.138+fips1

5.4.0-1128.138+fips1

ubuntu/linux-azure-fips<5.4.0-1133.140+fips1

5.4.0-1133.140+fips1

ubuntu/linux-fips<5.4.0-1102.112

5.4.0-1102.112

ubuntu/linux-gcp-fips<5.4.0-1132.141+fips1

5.4.0-1132.141+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-116.126

5.15.0-116.126

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1065.71

5.15.0-1065.71

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1013.14~22.04.1

6.8.0-1013.14~22.04.1

ubuntu/linux-azure<5.15.0-1068.77

5.15.0-1068.77

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1012.14~22.04.1

6.8.0-1012.14~22.04.1

ubuntu/linux-azure-fde<5.15.0-1068.77.1

5.15.0-1068.77.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1064.72

5.15.0-1064.72

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1012.13~22.04.1

6.8.0-1012.13~22.04.1

ubuntu/linux-gke<5.15.0-1062.68

5.15.0-1062.68

ubuntu/linux-gkeop<5.15.0-1048.55

5.15.0-1048.55

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-40.40~22.04.3

6.8.0-40.40~22.04.3

ubuntu/linux-ibm<5.15.0-1058.61

5.15.0-1058.61

ubuntu/linux-ibm-6.8<6.8.0-1010.10~22.04.1

6.8.0-1010.10~22.04.1

ubuntu/linux-intel-iotg<5.15.0-1060.66

5.15.0-1060.66

ubuntu/linux-kvm<5.15.0-1062.67

5.15.0-1062.67

ubuntu/linux-lowlatency<5.15.0-116.126

5.15.0-116.126

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-40.40.1~22.04.1

6.8.0-40.40.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1060.61

5.15.0-1060.61

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1011.11~22.04.1

6.8.0-1011.11~22.04.1

ubuntu/linux-nvidia-tegra<5.15.0-1026.26

5.15.0-1026.26

ubuntu/linux-nvidia-tegra-igx<5.15.0-1015.15

5.15.0-1015.15

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1063.69

5.15.0-1063.69

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1010.10~22.04.1

6.8.0-1010.10~22.04.1

ubuntu/linux-raspi<5.15.0-1058.61

5.15.0-1058.61

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-40.40.1~22.04.1

6.8.0-40.40.1~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1035.39

5.15.0-1035.39

ubuntu/linux-bluefield<5.15.0-1047.49

5.15.0-1047.49

ubuntu/linux-intel-iot-realtime<5.15.0-1058.60

5.15.0-1058.60

ubuntu/linux-realtime<5.15.0-1066.74

5.15.0-1066.74

ubuntu/linux-realtime-6.8<6.8.1-1006.6~22.04.1

6.8.1-1006.6~22.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1065.71+fips1

5.15.0-1065.71+fips1

ubuntu/linux-azure-fips<5.15.0-1068.77+fips1

5.15.0-1068.77+fips1

ubuntu/linux-fips<5.15.0-115.125+fips1

5.15.0-115.125+fips1

ubuntu/linux-gcp-fips<5.15.0-1064.72+fips1

5.15.0-1064.72+fips1

ubuntu/linux<6.8.0-40.40

6.8.0-40.40

ubuntu/linux-aws<6.8.0-1013.14

6.8.0-1013.14

ubuntu/linux-azure<6.8.0-1012.14

6.8.0-1012.14

ubuntu/linux-gcp<6.8.0-1012.13

6.8.0-1012.13

ubuntu/linux-gke<6.8.0-1008.11

6.8.0-1008.11

ubuntu/linux-ibm<6.8.0-1010.10

6.8.0-1010.10

ubuntu/linux-lowlatency<6.8.0-40.40.1

6.8.0-40.40.1

ubuntu/linux-nvidia<6.8.0-1011.11

6.8.0-1011.11

ubuntu/linux-nvidia-lowlatency<6.8.0-1011.11.1

6.8.0-1011.11.1

ubuntu/linux-oem-6.8<6.8.0-1010.10

6.8.0-1010.10

ubuntu/linux-oracle<6.8.0-1010.10

6.8.0-1010.10

ubuntu/linux-raspi<6.8.0-1009.10

6.8.0-1009.10

ubuntu/linux-riscv<6.8.0-40.40.1

6.8.0-40.40.1

ubuntu/linux-raspi-realtime<6.8.0-2008.8

6.8.0-2008.8

ubuntu/linux-realtime<6.8.1-1006.6

6.8.1-1006.6

ubuntu/linux-fips<6.8.0-78.78+fips1

6.8.0-78.78+fips1

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1148.154
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1193.208~14.04.1
Upgrade
Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.
Fixed in 4.4.0-273.307~14.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.4.0-273.307
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1186.201
Upgrade
Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-1185.198~16.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1193.208~16.04.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 4.15.0-1178.195~16.04.1
Upgrade
Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-242.254~16.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.4.0-1149.160
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1148.159~16.04.1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.4.0-1119.126
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.15.0-242.254
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.15.0-1185.198
Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1128.138~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1193.208
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1133.140~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1178.195
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1132.141~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-189.209~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1075.80~18.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.15.0-1168.173
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1147.158
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1127.136~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1112.124~18.04.1
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2123.129
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2102.108
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-1140.151
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2086.92
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-189.209
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1128.138
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1065.71~20.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1133.140
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1068.77~20.04.1
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1088.95
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1132.141
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1065.73~20.04.1
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.4.0-1095.99
Upgrade
Upgrade ubuntu/linux-gkeop-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1048.55~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-116.126~20.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1075.80
Upgrade
Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1058.61~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1060.66~20.04.1
Upgrade
Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.
Fixed in 5.4.0-1040.41
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.4.0-1116.123
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-116.126~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1027.27~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.4.0-1127.136
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1063.69~20.04.1
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Fixed in 5.4.0-1112.124
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Fixed in 5.15.0-1061.65~20.04.1
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Fixed in 5.4.0-1047.51
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Fixed in 5.4.0-1128.138+fips1
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Fixed in 5.4.0-1133.140+fips1
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Fixed in 5.4.0-1102.112
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Fixed in 5.4.0-1132.141+fips1
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Fixed in 5.15.0-116.126
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Fixed in 5.15.0-1065.71
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Fixed in 6.8.0-1013.14~22.04.1
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Fixed in 5.15.0-1068.77
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Fixed in 6.8.0-1012.14~22.04.1
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Fixed in 5.15.0-1068.77.1
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Fixed in 5.15.0-1064.72
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Fixed in 6.8.0-1012.13~22.04.1
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Fixed in 5.15.0-1062.68
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Fixed in 5.15.0-1048.55
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Fixed in 6.8.0-40.40~22.04.3
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Fixed in 5.15.0-1058.61
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Fixed in 6.8.0-1010.10~22.04.1
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Fixed in 5.15.0-1060.66
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Fixed in 5.15.0-1062.67
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Fixed in 5.15.0-116.126
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Fixed in 6.8.0-40.40.1~22.04.1
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Fixed in 5.15.0-1060.61
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Fixed in 6.8.0-1011.11~22.04.1
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Fixed in 5.15.0-1026.26
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Fixed in 5.15.0-1015.15
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Fixed in 5.15.0-1063.69
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Fixed in 6.8.0-1010.10~22.04.1
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Fixed in 5.15.0-1058.61
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Fixed in 6.8.0-40.40.1~22.04.1
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Fixed in 5.15.0-1035.39
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Fixed in 5.15.0-1047.49
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Fixed in 5.15.0-1058.60
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Fixed in 5.15.0-1066.74
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Fixed in 6.8.1-1006.6~22.04.1
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Fixed in 5.15.0-1065.71+fips1
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Fixed in 5.15.0-1068.77+fips1
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Fixed in 5.15.0-115.125+fips1
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Fixed in 5.15.0-1064.72+fips1
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Fixed in 6.8.0-40.40
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Fixed in 6.8.0-1013.14
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Fixed in 6.8.0-1012.14
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Fixed in 6.8.0-1012.13
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Fixed in 6.8.0-1008.11
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Fixed in 6.8.0-1010.10
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Fixed in 6.8.0-40.40.1
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Fixed in 6.8.0-1011.11
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Fixed in 6.8.0-1011.11.1
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Fixed in 6.8.0-1010.10
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Fixed in 6.8.0-1010.10
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Fixed in 6.8.0-1009.10
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Fixed in 6.8.0-40.40.1
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Fixed in 6.8.0-2008.8
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Fixed in 6.8.1-1006.6
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Fixed in 6.8.0-78.78+fips1
Compensating control
In init_data_container(), replace the kvmalloc() allocation of struct btrfs_data_container with kvzalloc() so the memory is zero-initialized before it is copied to user space.

Event History

May 17, 2024

CVE Published

via OSV·03:15 PM

Data Sourced

via OSV·03:15 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

Who can exploit this issue?

An attacker needs local access and low privileges. The provided CVSS vector indicates no user interaction is required.

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 is the potential impact of exploitation?

The issue can disclose sensitive information from kernel memory and can cause a denial of service. The provided vector rates confidentiality and availability impact as high, while integrity impact is none.

How can I identify activity related to this vulnerability?

The supplied report shows the issue occurring in the Btrfs logical-to-inode ioctl path, specifically btrfs_ioctl_logical_to_ino() during copy_to_user(). Kernel logs or crash reports containing KMSAN kernel-infoleak messages and that function path may indicate exposure.

UBUNTU-CVE-2024-35849: Infoleak

Affected Software

Remediation

Event History

Frequently Asked Questions

Who can exploit this issue?

Which Ubuntu kernel packages are listed as affected?

What is the potential impact of exploitation?

How can I identify activity related to this vulnerability?

Company

Resources

Contact

Frequently Asked Questions

Who can exploit this issue?

Which Ubuntu kernel packages are listed as affected?

What is the potential impact of exploitation?

How can I identify activity related to this vulnerability?