Rocky Linux: CVE-2024-41096: kernel (RLSA-2024-6567)
Description
In the Linux kernel, the following vulnerability has been resolved: PCI/MSI: Fix UAF in msi_capability_init KFENCE reports the following UAF: BUG: KFENCE: use-after-free read in __pci_enable_msi_range+0x2c0/0x488 Use-after-free read at 0x0000000024629571 (in kfence-#12): __pci_enable_msi_range+0x2c0/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 kfence-#12: 0x0000000008614900-0x00000000e06c228d, size=104, cache=kmalloc-128 allocated by task 81 on cpu 7 at 10.808142s: __kmem_cache_alloc_node+0x1f0/0x2bc kmalloc_trace+0x44/0x138 msi_alloc_desc+0x3c/0x9c msi_domain_insert_msi_desc+0x30/0x78 msi_setup_msi_desc+0x13c/0x184 __pci_enable_msi_range+0x258/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 freed by task 81 on cpu 7 at 10.811436s: msi_domain_free_descs+0xd4/0x10c msi_domain_free_locked.part.0+0xc0/0x1d8 msi_domain_alloc_irqs_all_locked+0xb4/0xbc pci_msi_setup_msi_irqs+0x30/0x4c __pci_enable_msi_range+0x2a8/0x488 pci_alloc_irq_vectors_affinity+0xec/0x14c pci_alloc_irq_vectors+0x18/0x28 Descriptor allocation done in: __pci_enable_msi_range msi_capability_init msi_setup_msi_desc msi_insert_msi_desc msi_domain_insert_msi_desc msi_alloc_desc ... Freed in case of failure in __msi_domain_alloc_locked() __pci_enable_msi_range msi_capability_init pci_msi_setup_msi_irqs msi_domain_alloc_irqs_all_locked msi_domain_alloc_locked __msi_domain_alloc_locked => fails msi_domain_free_locked ... That failure propagates back to pci_msi_setup_msi_irqs() in msi_capability_init() which accesses the descriptor for unmasking in the error exit path. Cure it by copying the descriptor and using the copy for the error exit path unmask operation. [ tglx: Massaged change log ]
Solution(s)
- rocky-upgrade-bpftool
- rocky-upgrade-bpftool-debuginfo
- rocky-upgrade-kernel
- rocky-upgrade-kernel-core
- rocky-upgrade-kernel-cross-headers
- rocky-upgrade-kernel-debug
- rocky-upgrade-kernel-debug-core
- rocky-upgrade-kernel-debug-debuginfo
- rocky-upgrade-kernel-debug-devel
- rocky-upgrade-kernel-debug-devel-matched
- rocky-upgrade-kernel-debug-modules
- rocky-upgrade-kernel-debug-modules-core
- rocky-upgrade-kernel-debug-modules-extra
- rocky-upgrade-kernel-debug-uki-virt
- rocky-upgrade-kernel-debuginfo
- rocky-upgrade-kernel-devel
- rocky-upgrade-kernel-devel-matched
- rocky-upgrade-kernel-headers
- rocky-upgrade-kernel-modules
- rocky-upgrade-kernel-modules-core
- rocky-upgrade-kernel-modules-extra
- rocky-upgrade-kernel-rt
- rocky-upgrade-kernel-rt-core
- rocky-upgrade-kernel-rt-debug
- rocky-upgrade-kernel-rt-debug-core
- rocky-upgrade-kernel-rt-debug-debuginfo
- rocky-upgrade-kernel-rt-debug-devel
- rocky-upgrade-kernel-rt-debug-kvm
- rocky-upgrade-kernel-rt-debug-modules
- rocky-upgrade-kernel-rt-debug-modules-core
- rocky-upgrade-kernel-rt-debug-modules-extra
- rocky-upgrade-kernel-rt-debuginfo
- rocky-upgrade-kernel-rt-devel
- rocky-upgrade-kernel-rt-kvm
- rocky-upgrade-kernel-rt-modules
- rocky-upgrade-kernel-rt-modules-core
- rocky-upgrade-kernel-rt-modules-extra
- rocky-upgrade-kernel-tools
- rocky-upgrade-kernel-tools-debuginfo
- rocky-upgrade-kernel-tools-libs
- rocky-upgrade-kernel-tools-libs-devel
- rocky-upgrade-kernel-uki-virt
- rocky-upgrade-kernel-zfcpdump
- rocky-upgrade-kernel-zfcpdump-core
- rocky-upgrade-kernel-zfcpdump-debuginfo
- rocky-upgrade-kernel-zfcpdump-devel
- rocky-upgrade-kernel-zfcpdump-devel-matched
- rocky-upgrade-kernel-zfcpdump-modules
- rocky-upgrade-kernel-zfcpdump-modules-core
- rocky-upgrade-kernel-zfcpdump-modules-extra
- rocky-upgrade-libperf
- rocky-upgrade-libperf-debuginfo
- rocky-upgrade-perf
- rocky-upgrade-perf-debuginfo
- rocky-upgrade-python3-perf
- rocky-upgrade-python3-perf-debuginfo
- rocky-upgrade-rtla
- rocky-upgrade-rv
- Lightweight Endpoint Agent
- Live Dashboards
- Real Risk Prioritization
- IT-Integrated Remediation Projects
- Cloud, Virtual, and Container Assessment
- Integrated Threat Feeds
- Easy-to-Use RESTful API
- Automation-Assisted Patching
- Automated Containment
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