In the Linux kernel, the following vulnerability has been resolved:
sata_fsl: fix UAF in sata_fsl_port_stop when rmmod sata_fsl
When the `rmmod sata_fsl.ko` command is executed in the PPC64 GNU/Linux, a bug is reported: ================================================================== BUG: Unable to handle kernel data access on read at 0x80000800805b502c Oops: Kernel access of bad area, sig: 11 [#1] NIP [c0000000000388a4] .ioread32+0x4/0x20 LR [80000000000c6034] .sata_fsl_port_stop+0x44/0xe0 [sata_fsl] Call Trace: .free_irq+0x1c/0x4e0 (unreliable) .ata_host_stop+0x74/0xd0 [libata] .release_nodes+0x330/0x3f0 .device_release_driver_internal+0x178/0x2c0 .driver_detach+0x64/0xd0 .bus_remove_driver+0x70/0xf0 .driver_unregister+0x38/0x80 .platform_driver_unregister+0x14/0x30 .fsl_sata_driver_exit+0x18/0xa20 [sata_fsl] .__se_sys_delete_module+0x1ec/0x2d0 .system_call_exception+0xfc/0x1f0 system_call_common+0xf8/0x200 ==================================================================
The triggering of the BUG is shown in the following stack:
driver_detach device_release_driver_internal __device_release_driver drv->remove(dev) --> platform_drv_remove/platform_remove drv->remove(dev) --> sata_fsl_remove iounmap(host_priv->hcr_base); <---- unmap kfree(host_priv); <---- free devres_release_all release_nodes dr->node.release(dev, dr->data) --> ata_host_stop ap->ops->port_stop(ap) --> sata_fsl_port_stop ioread32(hcr_base + HCONTROL) <---- UAF host->ops->host_stop(host)
The iounmap(host_priv->hcr_base) and kfree(host_priv) functions should not be executed in drv->remove. These functions should be executed in host_stop after port_stop. Therefore, we move these functions to the new function sata_fsl_host_stop and bind the new function to host_stop.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 24, 2024 |
| Suse | — | Upgrade kernel-devel-rtUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-64kb-livepatch-develUpgrade reiserfs-kmp-rtUpgrade dtb-freescaleUpgrade dtb-mediatekUpgrade kernel-default-develUpgrade kernel-default-livepatch-develUpgrade cluster-md-kmp-azureUpgrade kernel-rt-develUpgrade gfs2-kmp-64kbUpgrade gfs2-kmp-defaultUpgrade dtb-xilinxUpgrade kernel-defaultUpgrade kernel-default-livepatchUpgrade kernel-docsUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-marvellUpgrade dtb-appleUpgrade dtb-amdUpgrade cluster-md-kmp-64kbUpgrade kernel-default-baseUpgrade dtb-caviumUpgrade kernel-zfcpdumpUpgrade dlm-kmp-defaultUpgrade kernel-debug-develUpgrade ocfs2-kmp-rtUpgrade kernel-default-optionalUpgrade kernel-debugUpgrade ocfs2-kmp-defaultUpgrade dtb-allwinnerUpgrade dtb-alteraUpgrade dtb-socionextUpgrade kernel-symsUpgrade kernel-64kb-extraUpgrade kernel-azure-optionalUpgrade kernel-64kb-develUpgrade kselftests-kmp-rtUpgrade kernel-develUpgrade dtb-sprdUpgrade ocfs2-kmp-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-preempt-develUpgrade dtb-armUpgrade kernel-rt_debugUpgrade kernel-64kbUpgrade kernel-rt-livepatchUpgrade dlm-kmp-rtUpgrade cluster-md-kmp-rtUpgrade dtb-amazonUpgrade kernel-azure-extraUpgrade kernel-64kb-optionalUpgrade dtb-hisiliconUpgrade dtb-renesasUpgrade gfs2-kmp-azureUpgrade kernel-obs-buildUpgrade dtb-qcomUpgrade kernel-rtUpgrade kernel-rt_debug-vdsoUpgrade kernel-azure-develUpgrade kernel-preemptUpgrade cluster-md-kmp-defaultUpgrade kernel-kvmsmall-vdsoUpgrade dtb-nvidiaUpgrade reiserfs-kmp-64kbUpgrade kselftests-kmp-azureUpgrade kernel-syms-rtUpgrade kernel-debug-vdsoUpgrade kernel-source-azureUpgrade kernel-azure-vdsoUpgrade kernel-devel-azureUpgrade kernel-rt-extraUpgrade dtb-lgUpgrade dlm-kmp-azureUpgrade kernel-default-extraUpgrade dlm-kmp-64kbUpgrade dtb-apmUpgrade dtb-amlogicUpgrade gfs2-kmp-rtUpgrade kernel-macrosUpgrade reiserfs-kmp-azureUpgrade kselftests-kmp-defaultUpgrade kernel-docs-htmlUpgrade kernel-rt-optionalUpgrade kernel-obs-qaUpgrade kernel-source-vanillaUpgrade kernel-kvmsmall-develUpgrade kernel-rt_debug-develUpgrade kernel-azure-livepatch-develUpgrade kernel-default-base-rebuildUpgrade kernel-kvmsmallUpgrade dtb-broadcomUpgrade kernel-syms-azureUpgrade kernel-source-rtUpgrade kernel-rt-vdsoUpgrade kernel-debug-livepatch-develUpgrade kernel-sourceUpgrade ocfs2-kmp-64kbUpgrade dtb-rockchipUpgrade kernel-rt-livepatch-develUpgrade dtb-exynosUpgrade kselftests-kmp-64kbUpgrade kernel-default-vdsoUpgrade kernel-azure | Aug 9, 2024 | May 24, 2024 |
| Ubuntu | — | Upgrade linux-ibm-5.4Upgrade linuxUpgrade linux-gcp-fipsUpgrade linux-fipsUpgrade linux-oracle-5.4Upgrade linux-gcp-5.4Upgrade linux-gkeopUpgrade linux-awsUpgrade linux-gcpUpgrade linux-azure-fipsUpgrade linux-hwe-5.4Upgrade linux-aws-hweUpgrade linux-raspiUpgrade linux-aws-fipsUpgrade linux-kvmUpgrade linux-bluefieldUpgrade linux-oracleUpgrade linux-azure-5.4Upgrade linux-aws-5.4Upgrade linux-hweUpgrade linux-ibmUpgrade linux-gcp-4.15Upgrade linux-raspi-5.4Upgrade linux-azure-4.15Upgrade linux-azure | Nov 19, 2024 | May 24, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | May 24, 2024 |
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