In the Linux kernel, the following vulnerability has been resolved:
media: pvrusb2: fix uaf in pvr2_context_set_notify
[Syzbot reported] BUG: KASAN: slab-use-after-free in pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 Read of size 4 at addr ffff888113aeb0d8 by task kworker/1:1/26
CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.8.0-rc1-syzkaller-00046-gf1a27f081c1f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: usb_hub_wq hub_event Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 pvr2_context_set_notify+0x2c4/0x310 drivers/media/usb/pvrusb2/pvrusb2-context.c:35 pvr2_context_notify drivers/media/usb/pvrusb2/pvrusb2-context.c:95 [inline] pvr2_context_disconnect+0x94/0xb0 drivers/media/usb/pvrusb2/pvrusb2-context.c:272
Freed by task 906: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x106/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inline] slab_free mm/slub.c:4299 [inline] kfree+0x105/0x340 mm/slub.c:4409 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:137 [inline] pvr2_context_thread_func+0x69d/0x960 drivers/media/usb/pvrusb2/pvrusb2-context.c:158
[Analyze] Task A set disconnect_flag = !0, which resulted in Task B's condition being met and releasing mp, leading to this issue.
[Fix] Place the disconnect_flag assignment operation after all code in pvr2_context_disconnect() to avoid this issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 8, 2024 | Apr 17, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-tools-libsUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perf | Jul 16, 2024 | Apr 17, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade python3-perfUpgrade kernelUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftool | Jun 26, 2024 | Apr 17, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-tools | Oct 8, 2024 | Apr 17, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-toolsUpgrade python3-perfUpgrade kernelUpgrade kernel-tools-libs | Jul 17, 2024 | Apr 17, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 17, 2024 |
| Suse | — | Upgrade kernel-defaultUpgrade kernel-default-baseUpgrade kernel-64kb-develUpgrade kernel-kvmsmall-vdsoUpgrade cluster-md-kmp-64kbUpgrade dtb-renesasUpgrade dtb-armUpgrade kernel-default-extraUpgrade reiserfs-kmp-rtUpgrade dtb-rockchipUpgrade kernel-devel-rtUpgrade dtb-nvidiaUpgrade dtb-socionextUpgrade dtb-amlogicUpgrade kernel-debug-livepatch-develUpgrade kernel-syms-rtUpgrade reiserfs-kmp-defaultUpgrade kernel-azure-vdsoUpgrade dtb-hisiliconUpgrade kernel-default-livepatch-develUpgrade ocfs2-kmp-rtUpgrade dtb-apmUpgrade reiserfs-kmp-azureUpgrade kernel-docsUpgrade kernel-macrosUpgrade kernel-default-manUpgrade kernel-rt_debugUpgrade kernel-rt-livepatch-develUpgrade dlm-kmp-rtUpgrade dtb-marvellUpgrade kernel-rt_debug-vdsoUpgrade kernel-64kb-extraUpgrade kselftests-kmp-defaultUpgrade kselftests-kmp-rtUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-debugUpgrade kernel-obs-qaUpgrade dtb-amdUpgrade dtb-mediatekUpgrade cluster-md-kmp-defaultUpgrade dtb-appleUpgrade dlm-kmp-azureUpgrade dlm-kmp-defaultUpgrade kernel-debug-develUpgrade dtb-sprdUpgrade kernel-symsUpgrade kernel-64kbUpgrade dtb-alteraUpgrade cluster-md-kmp-rtUpgrade kernel-64kb-livepatch-develUpgrade kernel-rt-optionalUpgrade kernel-kvmsmall-develUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-rtUpgrade kernel-default-vdsoUpgrade dlm-kmp-64kbUpgrade kernel-default-optionalUpgrade cluster-md-kmp-azureUpgrade kernel-source-rtUpgrade dtb-freescaleUpgrade ocfs2-kmp-azureUpgrade kernel-azure-develUpgrade gfs2-kmp-rtUpgrade kernel-source-vanillaUpgrade kernel-source-azureUpgrade kernel-devel-azureUpgrade kernel-default-livepatchUpgrade kernel-debug-vdsoUpgrade dtb-lgUpgrade ocfs2-kmp-64kbUpgrade dtb-exynosUpgrade kernel-azure-extraUpgrade gfs2-kmp-defaultUpgrade kernel-rt_debug-develUpgrade kernel-docs-htmlUpgrade dtb-caviumUpgrade dtb-amazonUpgrade kernel-zfcpdumpUpgrade kernel-rt-livepatchUpgrade kernel-rt-develUpgrade kernel-obs-buildUpgrade kernel-develUpgrade kernel-64kb-optionalUpgrade gfs2-kmp-azureUpgrade kernel-azureUpgrade gfs2-kmp-64kbUpgrade dtb-qcomUpgrade dtb-broadcomUpgrade kernel-syms-azureUpgrade kernel-kvmsmallUpgrade kernel-default-develUpgrade kernel-default-base-rebuildUpgrade kernel-sourceUpgrade dtb-allwinnerUpgrade reiserfs-kmp-64kbUpgrade ocfs2-kmp-defaultUpgrade kselftests-kmp-azureUpgrade kselftests-kmp-64kbUpgrade kernel-rt-extraUpgrade dtb-xilinxUpgrade kernel-rt-vdsoUpgrade kernel-azure-livepatch-develUpgrade kernel-azure-optional | May 15, 2024 | Apr 17, 2024 |
| Ubuntu | — | Upgrade linux-image-oem-20.04dUpgrade linux-image-5.15.0-112-generic-lpaeUpgrade linux-image-azure-lts-22.04Upgrade linux-image-6.8.0-35-generic-64kUpgrade linux-image-lowlatencyUpgrade linux-image-ibmUpgrade linux-image-gkeop-5.4Upgrade linux-image-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-gke-5.15Upgrade linux-image-5.15.0-1061-oracleUpgrade linux-image-generic-64kUpgrade linux-image-5.15.0-110-lowlatencyUpgrade linux-image-gkeopUpgrade linux-image-5.4.0-189-genericUpgrade linux-image-6.8.0-1006-ibmUpgrade linux-image-5.15.0-113-generic-64kUpgrade linux-image-intelUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-ibm-lts-20.04Upgrade linux-image-5.15.0-1058-nvidiaUpgrade linux-image-5.4.0-1132-gcpUpgrade linux-image-raspiUpgrade linux-image-oem-24.04aUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-snapdragon-hwe-18.04Upgrade linux-image-5.15.0-113-genericUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-6.8.0-1005-raspiUpgrade linux-image-oem-20.04cUpgrade linux-image-5.4.0-1047-xilinx-zynqmpUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-5.15.0-1030-xilinx-zynqmpUpgrade linux-image-6.8.0-1008-azureUpgrade linux-image-genericUpgrade linux-image-6.8.0-1006-oracleUpgrade linux-image-aws-lts-20.04Upgrade linux-image-5.15.0-112-genericUpgrade linux-image-azure-fdeUpgrade linux-image-generic-lpaeUpgrade linux-image-raspi2Upgrade linux-image-ibm-classicUpgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-azure-lts-20.04Upgrade linux-image-5.15.0-1062-gcpUpgrade linux-image-5.4.0-189-generic-lpaeUpgrade linux-image-azureUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-5.15.0-1063-awsUpgrade linux-image-5.4.0-189-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-oem-20.04bUpgrade linux-image-generic-hwe-18.04Upgrade linux-image-5.15.0-1058-nvidia-lowlatencyUpgrade linux-image-5.4.0-1116-kvmUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-6.8.0-1004-gkeUpgrade linux-image-oracle-lts-20.04Upgrade linux-image-6.8.0-1009-awsUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oemUpgrade linux-image-6.8.0-1008-gcpUpgrade linux-image-6.8.0-1006-oracle-64kUpgrade linux-image-raspi-nolpaeUpgrade linux-image-kvmUpgrade linux-image-gkeUpgrade linux-image-oem-24.04Upgrade linux-image-5.15.0-1058-raspiUpgrade linux-image-5.15.0-1060-gkeUpgrade linux-image-5.4.0-1040-iotUpgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-35-genericUpgrade linux-image-5.15.0-113-generic-lpaeUpgrade linux-image-6.8.0-35-lowlatency-64kUpgrade linux-image-5.15.0-1060-kvmUpgrade linux-image-5.15.0-1046-gkeopUpgrade linux-image-6.8.0-35-lowlatencyUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-5.15.0-1065-azure-fdeUpgrade linux-image-5.4.0-1112-raspiUpgrade linux-image-5.4.0-1095-gkeopUpgrade linux-image-virtual-hwe-18.04Upgrade linux-image-6.8.0-1008-azure-fdeUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-oracle-64kUpgrade linux-image-5.4.0-1128-awsUpgrade linux-image-5.15.0-110-lowlatency-64kUpgrade linux-image-5.15.0-1058-intel-iotgUpgrade linux-image-raspi-hwe-18.04Upgrade linux-image-oem-osp1Upgrade linux-image-gkeop-5.15Upgrade linux-image-oracleUpgrade linux-image-virtualUpgrade linux-image-lowlatency-hwe-18.04Upgrade linux-image-5.4.0-1075-ibmUpgrade linux-image-5.15.0-1057-ibmUpgrade linux-image-5.15.0-1056-ibmUpgrade linux-image-5.4.0-1127-oracleUpgrade linux-image-5.4.0-1133-azureUpgrade linux-image-5.4.0-1088-bluefieldUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-awsUpgrade linux-image-6.8.0-1006-oemUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-bluefieldUpgrade linux-image-5.15.0-1066-azureUpgrade linux-image-5.15.0-112-generic-64kUpgrade linux-image-intel-iotgUpgrade linux-image-gcp-lts-20.04 | Jul 1, 2024 | Apr 17, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 17, 2024 |
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