Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net/sched: reject overly deep qdisc hierarchies Deep qdisc hierarchies can lead to excessive recursion in qdisc tree walkers and exhaust the kernel stack. The existing loop check does not cover the create-and-graft path, so a hierarchy can still be extended by creating a new child qdisc below an already deep parent. Store the hierarchy depth in struct Qdisc and update it when qdiscs are grafted. Reject new child qdiscs once the parent is already at the maximum allowed depth.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 08dc49df1527b09d9ea225a7265bbf6c237097bf; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a627d36c2a94e18c8c105ae68008786dfd85592e; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9f69bb9fdaa2fe64b68bb62fb84d405784bee540; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8ca8cdb74939581339e1ae370193c0adb5a85336; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2759acf08a3454866660edcd3ef4e64139f254a6; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a4b14a4df29d36458a943f9b521ddd0f940363cc; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e2d658c6427844cee5bc654b436ca68d680b6148; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before dedd34b0f2310e28c5f6d4875cfbf4b7ed821c01 |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.267 through 5.10.*; unaffected 5.15.218 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.152 through 6.6.*; unaffected 6.12.104 through 6.12.*; unaffected 6.18.45 through 6.18.*; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/08dc49df1527b09d9ea225a7265bbf6c237097bf
- https://git.kernel.org/stable/c/a627d36c2a94e18c8c105ae68008786dfd85592e
- https://git.kernel.org/stable/c/9f69bb9fdaa2fe64b68bb62fb84d405784bee540
- https://git.kernel.org/stable/c/8ca8cdb74939581339e1ae370193c0adb5a85336
- https://git.kernel.org/stable/c/2759acf08a3454866660edcd3ef4e64139f254a6
- https://git.kernel.org/stable/c/a4b14a4df29d36458a943f9b521ddd0f940363cc
- https://git.kernel.org/stable/c/e2d658c6427844cee5bc654b436ca68d680b6148
- https://git.kernel.org/stable/c/dedd34b0f2310e28c5f6d4875cfbf4b7ed821c01
ADP enrichment
No English description supplied.
No references supplied.