CVE-2022-49195
published 2025-02-26CVE-2022-49195: In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix panic on shutdown if multi-chip tree failed to probe DSA probing is atypical…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.26%
17.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
net: dsa: fix panic on shutdown if multi-chip tree failed to probe
DSA probing is atypical because a tree of devices must probe all at
once, so out of N switches which call dsa_tree_setup_routing_table()
during probe, for (N - 1) of them, "complete" will return false and they
will exit probing early. The Nth switch will set up the whole tree on
their behalf.
The implication is that for (N - 1) switches, the driver binds to the
device successfully, without doing anything. When the driver is bound,
the ->shutdown() method may run. But if the Nth switch has failed to
initialize the tree, there is nothing to do for the (N - 1) driver
instances, since the slave devices have not been created, etc. Moreover,
dsa_switch_shutdown() expects that the calling @ds has been in fact
initialized, so it jumps at dereferencing the various data structures,
which is incorrect.
Avoid the ensuing NULL pointer dereferences by simply checking whether
the Nth switch has previously set "ds->setup = true" for the switch
which is currently shutting down. The entire setup is serialized under
dsa2_mutex which we already hold.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.17.3-1 (bookworm) | linux 5.17.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 0650bf52b31ff35dc6430fc2e37969c36baba724 < 95df5cd5a446df6738d2d45872e08594819080e4 | 95df5cd5a446df6738d2d45872e08594819080e4 |
| linux | linux | >= 0650bf52b31ff35dc6430fc2e37969c36baba724 < b6e668ff43ebd87ccc8a19e5481345c428672295 | b6e668ff43ebd87ccc8a19e5481345c428672295 |
| linux | linux | >= 0650bf52b31ff35dc6430fc2e37969c36baba724 < b864d5350c18bea9369d0bdd9e7eb6f6172cc283 | b864d5350c18bea9369d0bdd9e7eb6f6172cc283 |
| linux | linux | >= 0650bf52b31ff35dc6430fc2e37969c36baba724 < 8fd36358ce82382519b50b05f437493e1e00c4a9 | 8fd36358ce82382519b50b05f437493e1e00c4a9 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 5.15.1 < 5.15.33 | 5.15.33 |
| linux | linux_kernel | >= 5.16 < 5.16.19 | 5.16.19 |
| linux | linux_kernel | >= 5.17 < 5.17.2 | 5.17.2 |
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
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GHSA
GHSA-xpfg-hqmq-gr2w: In the Linux kernel, the following vulnerability has been resolved:
net: dsa: fix panic on shutdown if multi-chip tree failed to probe
DSA probing i
ghsa_unreviewed·2025-09-23
CVE-2022-49195 [MEDIUM] CWE-476 GHSA-xpfg-hqmq-gr2w: In the Linux kernel, the following vulnerability has been resolved:
net: dsa: fix panic on shutdown if multi-chip tree failed to probe
DSA probing i
In the Linux kernel, the following vulnerability has been resolved:
net: dsa: fix panic on shutdown if multi-chip tree failed to probe
DSA probing is atypical because a tree of devices must probe all at
once, so out of N switches which call dsa_tree_setup_routing_table()
during probe, for (N - 1) of them, "complete" will return false and they
will exit probing early. The Nth switch will set up the whole tree on
their behalf.
The implication is that for (N - 1) switches, the driver binds to the
device successfully, without doing anything. When the driver is bound,
the ->shutdown() method may run. But if the Nth switch has failed to
initialize the tree, there is nothing to do for the (N - 1) driver
instances, since the slave devices have not been created, etc. Moreover,
dsa_switch_shutdow
OSV
CVE-2022-49195: In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix panic on shutdown if multi-chip tree failed to probe DSA probing is
osv·2025-02-26·CVSS 5.5
CVE-2022-49195 [MEDIUM] CVE-2022-49195: In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix panic on shutdown if multi-chip tree failed to probe DSA probing is
In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix panic on shutdown if multi-chip tree failed to probe DSA probing is atypical because a tree of devices must probe all at once, so out of N switches which call dsa_tree_setup_routing_table() during probe, for (N - 1) of them, "complete" will return false and they will exit probing early. The Nth switch will set up the whole tree on their behalf. The implication is that for (N - 1) switches, the driver binds to the device successfully, without doing anything. When the driver is bound, the ->shutdown() method may run. But if the Nth switch has failed to initialize the tree, there is nothing to do for the (N - 1) driver instances, since the slave devices have not been created, etc. Moreover, dsa_switch_shutdown()
Red Hat
kernel: net: dsa: fix panic on shutdown if multi-chip tree failed to probe
vendor_redhat·2025-02-26·CVSS 5.5
CVE-2022-49195 [MEDIUM] kernel: net: dsa: fix panic on shutdown if multi-chip tree failed to probe
kernel: net: dsa: fix panic on shutdown if multi-chip tree failed to probe
In the Linux kernel, the following vulnerability has been resolved:
net: dsa: fix panic on shutdown if multi-chip tree failed to probe
DSA probing is atypical because a tree of devices must probe all at
once, so out of N switches which call dsa_tree_setup_routing_table()
during probe, for (N - 1) of them, "complete" will return false and they
will exit probing early. The Nth switch will set up the whole tree on
their behalf.
The implication is that for (N - 1) switches, the driver binds to the
device successfully, without doing anything. When the driver is bound,
the ->shutdown() method may run. But if the Nth switch has failed to
initialize the tree, there is nothing to do for the (N - 1) driver
instances, since t
Debian
CVE-2022-49195: linux - In the Linux kernel, the following vulnerability has been resolved: net: dsa: f...
vendor_debian·2022·CVSS 5.5
CVE-2022-49195 [MEDIUM] CVE-2022-49195: linux - In the Linux kernel, the following vulnerability has been resolved: net: dsa: f...
In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix panic on shutdown if multi-chip tree failed to probe DSA probing is atypical because a tree of devices must probe all at once, so out of N switches which call dsa_tree_setup_routing_table() during probe, for (N - 1) of them, "complete" will return false and they will exit probing early. The Nth switch will set up the whole tree on their behalf. The implication is that for (N - 1) switches, the driver binds to the device successfully, without doing anything. When the driver is bound, the ->shutdown() method may run. But if the Nth switch has failed to initialize the tree, there is nothing to do for the (N - 1) driver instances, since the slave devices have not been created, etc. Moreover, dsa_switch_shutdown()
No detection rules found.
No public exploits indexed.
2025-02-26
Published