cbcvebase.
CVE-2024-43824
published 2024-08-17

CVE-2024-43824: In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init()…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.20%
9.5th percentile
In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-epf-test: Make use of cached 'epc_features' in pci_epf_test_core_init() Instead of getting the epc_features from pci_epc_get_features() API, use the cached pci_epf_test::epc_features value to avoid the NULL check. Since the NULL check is already performed in pci_epf_test_bind(), having one more check in pci_epf_test_core_init() is redundant and it is not possible to hit the NULL pointer dereference. Also with commit a01e7214bef9 ("PCI: endpoint: Remove "core_init_notifier" flag"), 'epc_features' got dereferenced without the NULL check, leading to the following false positive Smatch warning: drivers/pci/endpoint/functions/pci-epf-test.c:784 pci_epf_test_core_init() error: we previously assumed 'epc_features' could be null (see line 747) Thus, remove the redundant NULL check and also use the epc_features:: {msix_capable/msi_capable} flags directly to avoid local variables. [kwilczynski: commit log]

Affected

8 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.10.3-1 (forky)linux 6.10.3-1 (forky)
linuxlinux
linuxlinux>= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 < af4ad016abb1632ff7ee598a6037952b495e5b80af4ad016abb1632ff7ee598a6037952b495e5b80
linuxlinux>= 5e50ee27d4a52a817ab152128c48690ec7c5cdf1 < 5a5095a8bd1bd349cce1c879e5e44407a34dda8a5a5095a8bd1bd349cce1c879e5e44407a34dda8a
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 5.7 < 6.10.36.10.3

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu5.5MEDIUM
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