Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net_sched: Prevent creation of classes with TC_H_ROOT The function qdisc_tree_reduce_backlog() uses TC_H_ROOT as a termination condition when traversing up the qdisc tree to update parent backlog counters. However, if a class is created with classid TC_H_ROOT, the traversal terminates prematurely at this class instead of reaching the actual root qdisc, causing parent statistics to be incorrectly maintained. In case of DRR, this could lead to a crash as reported by Mingi Cho. Prevent the creation of any Qdisc class with classid TC_H_ROOT (0xFFFFFFFF) across all qdisc types, as suggested by Jamal.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 066a3b5b2346febf9a655b444567b7138e3bb939 before e05d9938b1b0ac40b6054cc5fa0ccbd9afd5ed4c; affected 066a3b5b2346febf9a655b444567b7138e3bb939 before 7a82fe67a9f4d7123d8e5ba8f0f0806c28695006; affected 066a3b5b2346febf9a655b444567b7138e3bb939 before 003d92c91cdb5a64b25a9a74cb8543aac9a8bb48; affected 066a3b5b2346febf9a655b444567b7138e3bb939 before e5ee00607bbfc97ef1526ea95b6b2458ac9e7cb7; affected 066a3b5b2346febf9a655b444567b7138e3bb939 before 78533c4a29ac3aeddce4b481770beaaa4f3bfb67; affected 066a3b5b2346febf9a655b444567b7138e3bb939 before 5c3ca9cb48b51bd72bf76b8b05e24f3cd53db5e7; affected 066a3b5b2346febf9a655b444567b7138e3bb939 before 94edfdfb9505ab608e86599d1d1e38c83816fc1c; affected 066a3b5b2346febf9a655b444567b7138e3bb939 before 0c3057a5a04d07120b3d0ec9c79568fceb9c921e |
| Linux / Linux | affected 2.6.25; unaffected 0 before 2.6.25; unaffected 5.4.292 through 5.4.*; unaffected 5.10.236 through 5.10.*; unaffected 5.15.180 through 5.15.*; unaffected 6.1.132 through 6.1.*; unaffected 6.6.84 through 6.6.*; unaffected 6.12.20 through 6.12.*; unaffected 6.13.8 through 6.13.*; unaffected 6.14 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/e05d9938b1b0ac40b6054cc5fa0ccbd9afd5ed4c
- https://git.kernel.org/stable/c/7a82fe67a9f4d7123d8e5ba8f0f0806c28695006
- https://git.kernel.org/stable/c/003d92c91cdb5a64b25a9a74cb8543aac9a8bb48
- https://git.kernel.org/stable/c/e5ee00607bbfc97ef1526ea95b6b2458ac9e7cb7
- https://git.kernel.org/stable/c/78533c4a29ac3aeddce4b481770beaaa4f3bfb67
- https://git.kernel.org/stable/c/5c3ca9cb48b51bd72bf76b8b05e24f3cd53db5e7
- https://git.kernel.org/stable/c/94edfdfb9505ab608e86599d1d1e38c83816fc1c
- https://git.kernel.org/stable/c/0c3057a5a04d07120b3d0ec9c79568fceb9c921e
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.