Rocky Linux: CVE-2024-41096: kernel (RLSA-2024-6567)

Rocky Linux: CVE-2024-41096: kernel (RLSA-2024-6567)

Severity

7

CVSS

(AV:L/AC:L/Au:S/C:C/I:C/A:C)

Published

07/29/2024

Created

09/18/2024

Added

09/17/2024

Modified

01/28/2025

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

References

• https://attackerkb.com/topics/cve-2024-41096
• CVE - 2024-41096
• https://errata.rockylinux.org/RLSA-2024:6567