CVE-2022-48672: of: fdt: fix off-by-one error in unflatten_dt_nodes()
First published: Fri May 03 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: of: fdt: fix off-by-one error in unflatten_dt_nodes() Commit 78c44d910d3e ("drivers/of: Fix depth when unflattening devicetree") forgot to fix up the depth check in the loop body in unflatten_dt_nodes() which makes it possible to overflow the nps[] buffer... Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.7<4.14.295 | |
| Linux Linux kernel | >=4.15<4.19.260 | |
| Linux Linux kernel | >=4.20<5.4.215 | |
| Linux Linux kernel | >=5.5<5.10.145 | |
| Linux Linux kernel | >=5.11<5.15.70 | |
| Linux Linux kernel | >=5.16<5.19.11 | |
| redhat/kernel | <4.14.295 | 4.14.295 |
| redhat/kernel | <4.19.260 | 4.19.260 |
| redhat/kernel | <5.4.215 | 5.4.215 |
| redhat/kernel | <5.10.145 | 5.10.145 |
| redhat/kernel | <5.15.70 | 5.15.70 |
| redhat/kernel | <5.19.11 | 5.19.11 |
| redhat/kernel | <6.0 | 6.0 |
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Reference Links
- https://git.kernel.org/stable/c/2133f451311671c7c42b5640d2b999326b39aa0e
- https://git.kernel.org/stable/c/2566706ac6393386a4e7c4ce23fe17f4c98d9aa0
- https://git.kernel.org/stable/c/2f945a792f67815abca26fa8a5e863ccf3fa1181
- https://git.kernel.org/stable/c/ba6b9f7cc1108bad6e2c53b1d6e0156379188db7
- https://git.kernel.org/stable/c/cbdda20ce363356698835185801a58a28f644853
- https://git.kernel.org/stable/c/e0e88c25f88b9805572263c9ed20f1d88742feaf
- https://git.kernel.org/stable/c/ee4369260e77821602102dcc7d792de39a56365c
- https://access.redhat.com/security/cve/CVE-2022-48672
- https://lore.kernel.org/linux-cve-announce/2024050318-CVE-2022-48672-b6d9@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2278939
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