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In the Linux kernel, the following vulnerability has been resolved:
ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module
Hi,
When testing install and uninstall of ipmi_si.ko and ipmi_msghandler.ko, the system crashed.
The log as follows: [ 141.087026] BUG: unable to handle kernel paging request at ffffffffc09b3a5a [ 141.087241] PGD 8fe4c0d067 P4D 8fe4c0d067 PUD 8fe4c0f067 PMD 103ad89067 PTE 0 [ 141.087464] Oops: 0010 [#1] SMP NOPTI [ 141.087580] CPU: 67 PID: 668 Comm: kworker/67:1 Kdump: loaded Not tainted 4.18.0.x86_64 #47 [ 141.088009] Workqueue: events 0xffffffffc09b3a40 [ 141.088009] RIP: 0010:0xffffffffc09b3a5a [ 141.088009] Code: Bad RIP value. [ 141.088009] RSP: 0018:ffffb9094e2c3e88 EFLAGS: 00010246 [ 141.088009] RAX: 0000000000000000 RBX: ffff9abfdb1f04a0 RCX: 0000000000000000 [ 141.088009] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 [ 141.088009] RBP: 0000000000000000 R08: ffff9abfffee3cb8 R09: 00000000000002e1 [ 141.088009] R10: ffffb9094cb73d90 R11: 00000000000f4240 R12: ffff9abfffee8700 [ 141.088009] R13: 0000000000000000 R14: ffff9abfdb1f04a0 R15: ffff9abfdb1f04a8 [ 141.088009] FS: 0000000000000000(0000) GS:ffff9abfffec0000(0000) knlGS:0000000000000000 [ 141.088009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 141.088009] CR2: ffffffffc09b3a30 CR3: 0000008fe4c0a001 CR4: 00000000007606e0 [ 141.088009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 141.088009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 141.088009] PKRU: 55555554 [ 141.088009] Call Trace: [ 141.088009] ? process_one_work+0x195/0x390 [ 141.088009] ? worker_thread+0x30/0x390 [ 141.088009] ? process_one_work+0x390/0x390 [ 141.088009] ? kthread+0x10d/0x130 [ 141.088009] ? kthread_flush_work_fn+0x10/0x10 [ 141.088009] ? ret_from_fork+0x35/0x40] BUG: unable to handle kernel paging request at ffffffffc0b28a5a [ 200.223240] PGD 97fe00d067 P4D 97fe00d067 PUD 97fe00f067 PMD a580cbf067 PTE 0 [ 200.223464] Oops: 0010 [#1] SMP NOPTI [ 200.223579] CPU: 63 PID: 664 Comm: kworker/63:1 Kdump: loaded Not tainted 4.18.0.x86_64 #46 [ 200.224008] Workqueue: events 0xffffffffc0b28a40 [ 200.224008] RIP: 0010:0xffffffffc0b28a5a [ 200.224008] Code: Bad RIP value. [ 200.224008] RSP: 0018:ffffbf3c8e2a3e88 EFLAGS: 00010246 [ 200.224008] RAX: 0000000000000000 RBX: ffffa0799ad6bca0 RCX: 0000000000000000 [ 200.224008] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000246 [ 200.224008] RBP: 0000000000000000 R08: ffff9fe43fde3cb8 R09: 00000000000000d5 [ 200.224008] R10: ffffbf3c8cb53d90 R11: 00000000000f4240 R12: ffff9fe43fde8700 [ 200.224008] R13: 0000000000000000 R14: ffffa0799ad6bca0 R15: ffffa0799ad6bca8 [ 200.224008] FS: 0000000000000000(0000) GS:ffff9fe43fdc0000(0000) knlGS:0000000000000000 [ 200.224008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 200.224008] CR2: ffffffffc0b28a30 CR3: 00000097fe00a002 CR4: 00000000007606e0 [ 200.224008] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 200.224008] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 200.224008] PKRU: 55555554 [ 200.224008] Call Trace: [ 200.224008] ? process_one_work+0x195/0x390 [ 200.224008] ? worker_thread+0x30/0x390 [ 200.224008] ? process_one_work+0x390/0x390 [ 200.224008] ? kthread+0x10d/0x130 [ 200.224008] ? kthread_flush_work_fn+0x10/0x10 [ 200.224008] ? ret_from_fork+0x35/0x40 [ 200.224008] kernel fault(0x1) notification starting on CPU 63 [ 200.224008] kernel fault(0x1) notification finished on CPU 63 [ 200.224008] CR2: ffffffffc0b28a5a [ 200.224008] ---[ end trace c82a412d93f57412 ]---
The reason is as follows: T1: rmmod ipmi_si. ->ipmi_unregister_smi() -> ipmi_bmc_unregister() -> __ipmi_bmc_unregister() -> kref_put(&bmc->usecount, cleanup_bmc_device); -> schedule_work(&bmc->remove_work);
T2: rmmod ipmi_msghandl ---truncated---
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 4, 2024 |
| Suse | — | Upgrade kernel-devel-rtUpgrade kernel-64kb-develUpgrade cluster-md-kmp-rtUpgrade dlm-kmp-64kbUpgrade reiserfs-kmp-azureUpgrade kernel-rt-livepatchUpgrade dtb-allwinnerUpgrade kernel-kvmsmall-develUpgrade dtb-xilinxUpgrade dtb-mediatekUpgrade dtb-alteraUpgrade gfs2-kmp-azureUpgrade dtb-exynosUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-nvidiaUpgrade ocfs2-kmp-defaultUpgrade kernel-default-base-rebuildUpgrade kernel-preemptUpgrade kernel-debugUpgrade gfs2-kmp-defaultUpgrade dtb-armUpgrade kernel-default-optionalUpgrade kernel-64kb-extraUpgrade kernel-zfcpdumpUpgrade kernel-64kb-livepatch-develUpgrade dtb-rockchipUpgrade kernel-rt-develUpgrade kernel-defaultUpgrade dtb-qcomUpgrade kernel-preempt-develUpgrade kselftests-kmp-64kbUpgrade dtb-caviumUpgrade dtb-renesasUpgrade kernel-debug-develUpgrade ocfs2-kmp-azureUpgrade gfs2-kmp-64kbUpgrade kernel-develUpgrade kernel-default-vdsoUpgrade reiserfs-kmp-defaultUpgrade dtb-hisiliconUpgrade kernel-sourceUpgrade ocfs2-kmp-rtUpgrade kernel-default-livepatch-develUpgrade kernel-symsUpgrade dtb-apmUpgrade kernel-64kb-optionalUpgrade dlm-kmp-azureUpgrade kernel-rt-optionalUpgrade kselftests-kmp-azureUpgrade kernel-source-vanillaUpgrade kernel-default-extraUpgrade dtb-amazonUpgrade dtb-amlogicUpgrade dlm-kmp-defaultUpgrade kernel-docsUpgrade kernel-obs-buildUpgrade kernel-default-manUpgrade kernel-macrosUpgrade kernel-kvmsmallUpgrade reiserfs-kmp-64kbUpgrade reiserfs-kmp-rtUpgrade kernel-azure-livepatch-develUpgrade kernel-rt_debug-develUpgrade kernel-azure-develUpgrade dtb-marvellUpgrade kernel-debug-vdsoUpgrade dtb-amdUpgrade cluster-md-kmp-defaultUpgrade kernel-obs-qaUpgrade kselftests-kmp-defaultUpgrade kernel-source-azureUpgrade dtb-broadcomUpgrade dtb-lgUpgrade gfs2-kmp-rtUpgrade kernel-default-develUpgrade kernel-kvmsmall-vdsoUpgrade dtb-freescaleUpgrade kernel-azure-optionalUpgrade kernel-source-rtUpgrade kernel-rt-livepatch-develUpgrade kernel-azureUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-debug-livepatch-develUpgrade kernel-devel-azureUpgrade kernel-syms-azureUpgrade kernel-syms-rtUpgrade kselftests-kmp-rtUpgrade kernel-rtUpgrade kernel-rt_debugUpgrade kernel-docs-htmlUpgrade kernel-default-baseUpgrade dlm-kmp-rtUpgrade kernel-64kbUpgrade kernel-default-livepatchUpgrade dtb-appleUpgrade kernel-rt-extraUpgrade cluster-md-kmp-azureUpgrade cluster-md-kmp-64kbUpgrade kernel-azure-extraUpgrade kernel-azure-vdsoUpgrade kernel-rt-vdsoUpgrade ocfs2-kmp-64kbUpgrade kernel-rt_debug-vdsoUpgrade dtb-sprdUpgrade kernel-azure-baseUpgrade dtb-socionext | Aug 9, 2024 | Mar 4, 2024 |
| Ubuntu | — | Upgrade linux-oracle-5.4Upgrade linuxUpgrade linux-gcpUpgrade linux-bluefieldUpgrade linux-raspi-5.4Upgrade linux-gcp-5.4Upgrade linux-ibm-5.4Upgrade linux-fipsUpgrade linux-aws-5.4Upgrade linux-hwe-5.4Upgrade linux-ibmUpgrade linux-azure-fipsUpgrade linux-gcp-fipsUpgrade linux-oracleUpgrade linux-raspiUpgrade linux-azure-5.4Upgrade linux-azureUpgrade linux-kvmUpgrade linux-aws-fipsUpgrade linux-gkeopUpgrade linux-aws | Nov 19, 2024 | Mar 4, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Mar 4, 2024 |
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