kernel.org https://git.kernel.org/stable/c/9b1ca33ebd05b3acef5b976c04e5e791af93ce1b [No types assigned]

kernel.org https://git.kernel.org/stable/c/d1768e5535d3ded59f888637016e6f821f4e069f [No types assigned]

NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NIST CWE-22

OR
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 3.7 up to (excluding) 5.10.227
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.168
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.113
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.54
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.10.13
     *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.2

https://git.kernel.org/stable/c/28f1cd94d3f1092728fb775a0fe26c5f1ac2ebeb No Types Assigned

https://git.kernel.org/stable/c/28f1cd94d3f1092728fb775a0fe26c5f1ac2ebeb Patch

https://git.kernel.org/stable/c/3d2411f4edcb649eaf232160db459bb4770b5251 No Types Assigned

https://git.kernel.org/stable/c/3d2411f4edcb649eaf232160db459bb4770b5251 Patch

https://git.kernel.org/stable/c/6c4e13fdfcab34811c3143a0a03c05fec4e870ec No Types Assigned

https://git.kernel.org/stable/c/6c4e13fdfcab34811c3143a0a03c05fec4e870ec Patch

https://git.kernel.org/stable/c/7420c1bf7fc784e587b87329cc6dfa3dca537aa4 No Types Assigned

https://git.kernel.org/stable/c/7420c1bf7fc784e587b87329cc6dfa3dca537aa4 Patch

https://git.kernel.org/stable/c/a77fc4acfd49fc6076e565445b2bc5fdc3244da4 No Types Assigned

https://git.kernel.org/stable/c/a77fc4acfd49fc6076e565445b2bc5fdc3244da4 Patch

https://git.kernel.org/stable/c/c30558e6c5c9ad6c86459d9acce1520ceeab9ea6 No Types Assigned

https://git.kernel.org/stable/c/c30558e6c5c9ad6c86459d9acce1520ceeab9ea6 Patch

https://git.kernel.org/stable/c/f0e5311aa8022107d63c54e2f03684ec097d1394 No Types Assigned

https://git.kernel.org/stable/c/f0e5311aa8022107d63c54e2f03684ec097d1394 Patch

In the Linux kernel, the following vulnerability has been resolved:

firmware_loader: Block path traversal

Most firmware names are hardcoded strings, or are constructed from fairly
constrained format strings where the dynamic parts are just some hex
numbers or such.

However, there are a couple codepaths in the kernel where firmware file
names contain string components that are passed through from a device or
semi-privileged userspace; the ones I could find (not counting interfaces
that require root privileges) are:

 - lpfc_sli4_request_firmware_update() seems to construct the firmware
   filename from "ModelName", a string that was previously parsed out of
   some descriptor ("Vital Product Data") in lpfc_fill_vpd()
 - nfp_net_fw_find() seems to construct a firmware filename from a model
   name coming from nfp_hwinfo_lookup(pf->hwinfo, "nffw.partno"), which I
   think parses some descriptor that was read from the device.
   (But this case likely isn't exploitable because the format string looks
   like "netronome/nic_%s", and there shouldn't be any *folders* starting
   with "netronome/nic_". The previous case was different because there,
   the "%s" is *at the start* of the format string.)
 - module_flash_fw_schedule() is reachable from the
   ETHTOOL_MSG_MODULE_FW_FLASH_ACT netlink command, which is marked as
   GENL_UNS_ADMIN_PERM (meaning CAP_NET_ADMIN inside a user namespace is
   enough to pass the privilege check), and takes a userspace-provided
   firmware name.
   (But I think to reach this case, you need to have CAP_NET_ADMIN over a
   network namespace that a special kind of ethernet device is mapped into,
   so I think this is not a viable attack path in practice.)

Fix it by rejecting any firmware names containing ".." path components.

For what it's worth, I went looking and haven't found any USB device
drivers that use the firmware loader dangerously.

kernel.org https://git.kernel.org/stable/c/28f1cd94d3f1092728fb775a0fe26c5f1ac2ebeb [No types assigned]

kernel.org https://git.kernel.org/stable/c/3d2411f4edcb649eaf232160db459bb4770b5251 [No types assigned]

kernel.org https://git.kernel.org/stable/c/6c4e13fdfcab34811c3143a0a03c05fec4e870ec [No types assigned]

kernel.org https://git.kernel.org/stable/c/7420c1bf7fc784e587b87329cc6dfa3dca537aa4 [No types assigned]

kernel.org https://git.kernel.org/stable/c/a77fc4acfd49fc6076e565445b2bc5fdc3244da4 [No types assigned]

kernel.org https://git.kernel.org/stable/c/c30558e6c5c9ad6c86459d9acce1520ceeab9ea6 [No types assigned]

kernel.org https://git.kernel.org/stable/c/f0e5311aa8022107d63c54e2f03684ec097d1394 [No types assigned]