5.5

CVE-2026-64254

NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.0 < 6.1.177
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.144
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.95
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.38
Linux ≫ Linux Kernel Version >= 6.19 < 7.1.3
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.11% 0.017
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-617 Reachable Assertion

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

https://git.kernel.org/stable/c/eb47b9bffd07a47b84910847cb5ea066ce184055
Patch
https://git.kernel.org/stable/c/06f6dd2ff2bd07eaf7178a807407ff27e85122b4
Patch
https://git.kernel.org/stable/c/a4be4a1308f02bff79a30eea2d04ead5b63685f2
Patch
https://git.kernel.org/stable/c/81371dbd23601f67f01372817fdbab42c5601e43
Patch
https://git.kernel.org/stable/c/9764a786ba98db58f0725913c369e721253aba33
Patch
https://git.kernel.org/stable/c/d876153680e3d721d385e554def919bce3d18c74
Patch