In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix information leak in btrfs_ioctl_logical_to_ino()
Syzbot reported the following information leak for in btrfs_ioctl_logical_to_ino():
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x110 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [inline] _copy_to_user+0xbc/0x110 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [inline] btrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499 btrfs_ioctl+0x714/0x1260 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was created at: __kmalloc_large_node+0x231/0x370 mm/slub.c:3921 __do_kmalloc_node mm/slub.c:3954 [inline] __kmalloc_node+0xb07/0x1060 mm/slub.c:3973 kmalloc_node include/linux/slab.h:648 [inline] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc include/linux/slab.h:766 [inline] init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779 btrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480 btrfs_ioctl+0x714/0x1260 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x261/0x450 fs/ioctl.c:890 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890 x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+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 btrfs_data_container' back to user-space. This btrfs_data_container is allocated in 'init_data_container()' via kvmalloc(), which does not zero-fill the memory.
Fix this by using kvzalloc() which zeroes out the memory on allocation.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade kernel-tools-develUpgrade python-perfUpgrade bpftoolUpgrade perfUpgrade kernel-livepatch-5.10.216-204.855Upgrade kernel-livepatch-4.14.348-265.562Upgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-5.15.158-103.164Upgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernelUpgrade kernel-debuginfo | Nov 12, 2024 | May 17, 2024 |
| Amazon_linux_2023 | — | Upgrade kernel-toolsUpgrade kernelUpgrade kernel-livepatch-6.1.90-99.173Upgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-staticUpgrade kernel-modules-extra-commonUpgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel-develUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade python3-perfUpgrade python3-perf-debuginfoUpgrade perfUpgrade perf-debuginfoUpgrade kernel-libbpfUpgrade kernel-debuginfoUpgrade kernel-modules-extraUpgrade bpftool | Feb 17, 2025 | May 17, 2024 |
| Debian | — | Upgrade linux | Jun 27, 2024 | May 17, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 17, 2024 |
| Suse | — | Upgrade dtb-broadcomUpgrade dtb-freescaleUpgrade kernel-obs-buildUpgrade cluster-md-kmp-rtUpgrade dtb-xilinxUpgrade kselftests-kmp-azureUpgrade ocfs2-kmp-azureUpgrade kernel-default-livepatchUpgrade kernel-develUpgrade kernel-rt-livepatchUpgrade kernel-kvmsmall-develUpgrade kernel-zfcpdumpUpgrade kernel-syms-azureUpgrade kernel-rtUpgrade kernel-rt-develUpgrade kernel-source-rtUpgrade kernel-rt_debug-develUpgrade kernel-default-base-rebuildUpgrade kernel-azureUpgrade kernel-kvmsmallUpgrade ocfs2-kmp-64kbUpgrade kernel-debug-vdsoUpgrade kernel-azure-optionalUpgrade kernel-kvmsmall-livepatch-develUpgrade dtb-amazonUpgrade kernel-default-vdsoUpgrade kernel-devel-azureUpgrade ocfs2-kmp-defaultUpgrade kernel-default-develUpgrade dtb-exynosUpgrade dtb-alteraUpgrade dtb-allwinnerUpgrade gfs2-kmp-azureUpgrade kernel-source-vanillaUpgrade kselftests-kmp-64kbUpgrade kernel-azure-develUpgrade reiserfs-kmp-64kbUpgrade reiserfs-kmp-azureUpgrade dlm-kmp-64kbUpgrade gfs2-kmp-defaultUpgrade dtb-caviumUpgrade kernel-source-azureUpgrade cluster-md-kmp-azureUpgrade kernel-64kbUpgrade kernel-azure-livepatch-develUpgrade kernel-default-optionalUpgrade kernel-rt-optionalUpgrade dtb-lgUpgrade kernel-sourceUpgrade dtb-qcomUpgrade kernel-devel-rtUpgrade gfs2-kmp-64kbUpgrade gfs2-kmp-rtUpgrade kernel-64kb-develUpgrade kernel-64kb-livepatch-develUpgrade reiserfs-kmp-defaultUpgrade kernel-syms-rtUpgrade ocfs2-kmp-rtUpgrade dlm-kmp-azureUpgrade kernel-docs-htmlUpgrade reiserfs-kmp-rtUpgrade kernel-obs-qaUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-default-livepatch-develUpgrade kernel-default-baseUpgrade kernel-64kb-optionalUpgrade cluster-md-kmp-defaultUpgrade kernel-defaultUpgrade kernel-64kb-extraUpgrade dtb-renesasUpgrade kernel-macrosUpgrade kernel-default-extraUpgrade dtb-hisiliconUpgrade dtb-rockchipUpgrade dtb-mediatekUpgrade kernel-docsUpgrade kernel-debug-develUpgrade dtb-sprdUpgrade kernel-rt_debugUpgrade dtb-nvidiaUpgrade dtb-amlogicUpgrade kernel-rt-extraUpgrade kernel-debug-livepatch-develUpgrade kernel-azure-vdsoUpgrade kernel-azure-extraUpgrade dtb-apmUpgrade cluster-md-kmp-64kbUpgrade kselftests-kmp-rtUpgrade dtb-amdUpgrade dlm-kmp-defaultUpgrade dtb-appleUpgrade kernel-rt-livepatch-develUpgrade kernel-default-manUpgrade kernel-symsUpgrade kernel-rt_debug-vdsoUpgrade kernel-rt-vdsoUpgrade dlm-kmp-rtUpgrade kselftests-kmp-defaultUpgrade kernel-debugUpgrade dtb-marvellUpgrade dtb-armUpgrade kernel-azure-baseUpgrade dtb-socionext | Jun 12, 2024 | May 17, 2024 |
| Ubuntu | — | Upgrade linux-image-5.4.0-189-genericUpgrade linux-image-5.4.0-1116-kvmUpgrade linux-image-generic-lpaeUpgrade linux-image-lowlatencyUpgrade linux-image-4.15.0-1168-kvmUpgrade linux-image-5.15.0-116-lowlatency-64kUpgrade linux-image-4.4.0-273-lowlatencyUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-aws-4.15Upgrade linux-image-aws-hweUpgrade linux-image-aws-fipsUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-nvidiaUpgrade linux-image-gke-5.15Upgrade linux-image-6.8.0-40-lowlatencyUpgrade linux-image-6.8.0-1009-raspiUpgrade linux-image-bluefieldUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-4.15.0-1147-oracleUpgrade linux-image-oemUpgrade linux-image-generic-lts-xenialUpgrade linux-image-5.15.0-1068-azureUpgrade linux-image-6.8.0-1012-azureUpgrade linux-image-4.15.0-1140-fipsUpgrade linux-image-fipsUpgrade linux-image-5.15.0-1063-oracleUpgrade linux-image-awsUpgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-6.8.0-1010-oracleUpgrade linux-image-5.15.0-1065-gcpUpgrade linux-image-genericUpgrade linux-image-5.4.0-1112-raspiUpgrade linux-image-4.15.0-1185-awsUpgrade linux-image-4.15.0-1148-oracleUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1012-azure-fdeUpgrade linux-image-4.15.0-2102-azure-fipsUpgrade linux-image-generic-hwe-16.04Upgrade linux-image-6.8.0-40-lowlatency-64kUpgrade linux-image-6.8.0-1011-nvidia-lowlatencyUpgrade linux-image-6.8.0-1011-nvidia-64kUpgrade linux-image-6.8.0-1008-gkeUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1062-gkeUpgrade linux-image-virtualUpgrade linux-image-5.15.0-1058-raspiUpgrade linux-image-5.4.0-1075-ibmUpgrade linux-image-4.15.0-242-genericUpgrade linux-image-raspi-nolpaeUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-20.04bUpgrade linux-image-ibm-lts-20.04Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-6.8.0-1010-ibmUpgrade linux-image-6.8.0-40-generic-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-azure-lts-20.04Upgrade linux-image-ibm-classicUpgrade linux-image-azure-fdeUpgrade linux-image-5.4.0-1133-azureUpgrade linux-image-virtual-hwe-16.04Upgrade linux-image-lowlatency-hwe-16.04Upgrade linux-image-gcp-lts-20.04Upgrade linux-image-oracleUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-aws-lts-20.04Upgrade linux-image-gkeopUpgrade linux-image-4.4.0-1148-awsUpgrade linux-image-5.15.0-116-generic-lpaeUpgrade linux-image-ibmUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-5.4.0-189-lowlatencyUpgrade linux-image-nvidia-6.8Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-4.15.0-1178-gcpUpgrade linux-image-azure-lts-22.04Upgrade linux-image-gcp-4.15Upgrade linux-image-gkeop-5.4Upgrade linux-image-oem-20.04dUpgrade linux-image-4.4.0-1149-kvmUpgrade linux-image-5.15.0-116-genericUpgrade linux-image-azure-4.15Upgrade linux-image-5.4.0-189-generic-lpaeUpgrade linux-image-nvidia-64kUpgrade linux-image-azureUpgrade linux-image-5.15.0-1058-ibmUpgrade linux-image-5.4.0-1047-xilinx-zynqmpUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-generic-64kUpgrade linux-image-gcp-fips-4.15Upgrade linux-image-4.15.0-2086-gcp-fipsUpgrade linux-image-5.15.0-1065-awsUpgrade linux-image-oem-20.04cUpgrade linux-image-5.15.0-1035-xilinx-zynqmpUpgrade linux-image-aws-fips-4.15Upgrade linux-image-azure-fips-4.15Upgrade linux-image-5.4.0-1128-awsUpgrade linux-image-virtual-lts-xenialUpgrade linux-image-6.8.0-40-genericUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-4.4.0-1186-awsUpgrade linux-image-5.15.0-116-lowlatencyUpgrade linux-image-6.8.0-1011-nvidia-lowlatency-64kUpgrade linux-image-raspiUpgrade linux-image-kvmUpgrade linux-image-oem-20.04Upgrade linux-image-5.4.0-1040-iotUpgrade linux-image-5.4.0-1088-bluefieldUpgrade linux-image-gcp-lts-18.04Upgrade linux-image-azure-fipsUpgrade linux-image-intelUpgrade linux-image-6.8.0-1013-awsUpgrade linux-image-5.15.0-1060-nvidia-lowlatencyUpgrade linux-image-5.15.0-1062-kvmUpgrade linux-image-gkeop-5.15Upgrade linux-image-5.15.0-1060-nvidiaUpgrade linux-image-aws-lts-18.04Upgrade linux-image-azure-lts-18.04Upgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-raspi2Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-azure-cvmUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-6.8.0-1012-gcpUpgrade linux-image-5.15.0-1060-intel-iotgUpgrade linux-image-4.4.0-1119-fipsUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oem-osp1Upgrade linux-image-raspi-hwe-18.04Upgrade linux-image-4.15.0-242-lowlatencyUpgrade linux-image-6.8.0-1010-oracle-64kUpgrade linux-image-gkeUpgrade linux-image-lowlatency-lts-xenialUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-5.4.0-1132-gcpUpgrade linux-image-aws-lts-22.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-oem-24.04aUpgrade linux-image-gcp-fipsUpgrade linux-image-5.15.0-116-generic-64kUpgrade linux-image-oracle-4.15Upgrade linux-image-virtual-hwe-18.04Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-4.4.0-273-genericUpgrade linux-image-4.15.0-1193-azureUpgrade linux-image-5.4.0-1127-oracleUpgrade linux-image-5.4.0-1095-gkeopUpgrade linux-image-oracle-lts-18.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-4.15.0-2123-aws-fipsUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1068-azure-fdeUpgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-1011-nvidiaUpgrade linux-image-5.15.0-1048-gkeopUpgrade linux-image-5.15.0-1064-gcpUpgrade linux-image-6.8.0-1010-oem | Jul 15, 2024 | May 17, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 17, 2024 |
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