{"timestamp":"2024-09-10T16:58:12.493038Z","id":"CVE-2022-48817","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/dsa/qca/ar9331.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"ac3a68d56651c3dad2c12c7afce065fe15267f44","lessThan":"475ce5dcf2d88fd4f3c213a0ac944e3e40702970","versionType":"git","status":"affected"},{"version":"ac3a68d56651c3dad2c12c7afce065fe15267f44","lessThan":"aae1c6a1d3d696fc33b609fb12fe744a556d1dc5","versionType":"git","status":"affected"},{"version":"ac3a68d56651c3dad2c12c7afce065fe15267f44","lessThan":"f1842a8cb71de4d7eb75a86f76e88c7ee739218c","versionType":"git","status":"affected"},{"version":"ac3a68d56651c3dad2c12c7afce065fe15267f44","lessThan":"50facd86e9fbc4b93fe02e5fe05776047f45dbfb","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/dsa/qca/ar9331.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.9","status":"affected"},{"version":"0","lessThan":"5.9","versionType":"semver","status":"unaffected"},{"version":"5.10.101","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.24","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"5.16.10","lessThanOrEqual":"5.16.*","versionType":"semver","status":"unaffected"},{"version":"5.17","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]

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

NVD-CWE-noinfo

OR
          *cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.24
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.10
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.9 up to (excluding) 5.10.101

CVE: https://git.kernel.org/stable/c/475ce5dcf2d88fd4f3c213a0ac944e3e40702970 Types: Patch

CVE: https://git.kernel.org/stable/c/50facd86e9fbc4b93fe02e5fe05776047f45dbfb Types: Patch

CVE: https://git.kernel.org/stable/c/aae1c6a1d3d696fc33b609fb12fe744a556d1dc5 Types: Patch

CVE: https://git.kernel.org/stable/c/f1842a8cb71de4d7eb75a86f76e88c7ee739218c Types: Patch

kernel.org: https://git.kernel.org/stable/c/475ce5dcf2d88fd4f3c213a0ac944e3e40702970 Types: Patch

kernel.org: https://git.kernel.org/stable/c/50facd86e9fbc4b93fe02e5fe05776047f45dbfb Types: Patch

kernel.org: https://git.kernel.org/stable/c/aae1c6a1d3d696fc33b609fb12fe744a556d1dc5 Types: Patch

kernel.org: https://git.kernel.org/stable/c/f1842a8cb71de4d7eb75a86f76e88c7ee739218c Types: Patch

https://git.kernel.org/stable/c/475ce5dcf2d88fd4f3c213a0ac944e3e40702970

https://git.kernel.org/stable/c/50facd86e9fbc4b93fe02e5fe05776047f45dbfb

https://git.kernel.org/stable/c/aae1c6a1d3d696fc33b609fb12fe744a556d1dc5

https://git.kernel.org/stable/c/f1842a8cb71de4d7eb75a86f76e88c7ee739218c

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

net: dsa: ar9331: register the mdiobus under devres

As explained in commits:
74b6d7d13307 ("net: dsa: realtek: register the MDIO bus under devres")
5135e96a3dd2 ("net: dsa: don't allocate the slave_mii_bus using devres")

mdiobus_free() will panic when called from devm_mdiobus_free() <-
devres_release_all() <- __device_release_driver(), and that mdiobus was
not previously unregistered.

The ar9331 is an MDIO device, so the initial set of constraints that I
thought would cause this (I2C or SPI buses which call ->remove on
->shutdown) do not apply. But there is one more which applies here.

If the DSA master itself is on a bus that calls ->remove from ->shutdown
(like dpaa2-eth, which is on the fsl-mc bus), there is a device link
between the switch and the DSA master, and device_links_unbind_consumers()
will unbind the ar9331 switch driver on shutdown.

So the same treatment must be applied to all DSA switch drivers, which
is: either use devres for both the mdiobus allocation and registration,
or don't use devres at all.

The ar9331 driver doesn't have a complex code structure for mdiobus
removal, so just replace of_mdiobus_register with the devres variant in
order to be all-devres and ensure that we don't free a still-registered
bus.

kernel.org https://git.kernel.org/stable/c/475ce5dcf2d88fd4f3c213a0ac944e3e40702970 [No types assigned]

kernel.org https://git.kernel.org/stable/c/50facd86e9fbc4b93fe02e5fe05776047f45dbfb [No types assigned]

kernel.org https://git.kernel.org/stable/c/aae1c6a1d3d696fc33b609fb12fe744a556d1dc5 [No types assigned]

kernel.org https://git.kernel.org/stable/c/f1842a8cb71de4d7eb75a86f76e88c7ee739218c [No types assigned]