CVE-2026-64254

CVE CVE-2026-64254EUVD EUVD-2026-48663Published 2026-07-24T15:31:22.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR When BAR_PEER_SPAD and BAR_CONFIG share one PCI BAR, the module teardown path ends up calling pci_iounmap() on the same iomem with some offset, which is unnecessary and triggers a kernel warning like the following: Trying to vunmap() nonexistent vm area (0000000069a5ffe8) WARNING: mm/vmalloc.c:3470 at vunmap+0x58/0x68, CPU#5: modprobe/2937 [...] Call trace: vunmap+0x58/0x68 (P) iounmap+0x34/0x48 pci_iounmap+0x2c/0x40 ntb_epf_pci_remove+0x44/0x80 [ntb_hw_epf] pci_device_remove+0x48/0xf8 device_remove+0x50/0x88 device_release_driver_internal+0x1c8/0x228 driver_detach+0x50/0xb0 bus_remove_driver+0x74/0x100 driver_unregister+0x34/0x68 pci_unregister_driver+0x34/0xa0 ntb_epf_pci_driver_exit+0x14/0xfe0 [ntb_hw_epf] [...] Fix it by unmapping only when PEER_SPAD and CONFIG use difference bars.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 <d876153680e3d721d385e554def919bce3d18c74; patch: 6.12.95; e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 <a4be4a1308f02bff79a30eea2d04ead5b63685f2; 6.0; patch: 6.18.38; patch: 6.6.144; patch: 7.1.3; patch: 0; patch: 7.2-rc1; e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 <eb47b9bffd07a47b84910847cb5ea066ce184055; e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 <81371dbd23601f67f01372817fdbab42c5601e43; e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 <06f6dd2ff2bd07eaf7178a807407ff27e85122b4; e75d5ae8ab88b7ffb3d1d56124b003f3555f74b4 <9764a786ba98db58f0725913c369e721253aba33; patch: 6.1.177

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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