Description
In the Linux kernel, the following vulnerability has been resolved:
sched: address a potential NULL pointer dereference in the GRED scheduler.
If kzalloc in gred_init returns a NULL pointer, the code follows the error handling path, invoking gred_destroy. This, in turn, calls gred_offload, where memset could receive a NULL pointer as input, potentially leading to a kernel crash.
When table->opt is NULL in gred_init(), gred_change_table_def() is not called yet, so it is not necessary to call ->ndo_setup_tc() in gred_offload().
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= f25c0515c521375154c62c72447869f40218c861, < d02c9acd68950a444acda18d514e2b41f846cb7f; >= f25c0515c521375154c62c72447869f40218c861, < 0f0a152957d64ce45b4c27c687e7d087e8f45079; >= f25c0515c521375154c62c72447869f40218c861, < 68896dd50180b38ea552e49a6a00b685321e5769; >= f25c0515c521375154c62c72447869f40218c861, < 5f996b4f80c2cef1f9c77275055e7fcba44c9199; >= f25c0515c521375154c62c72447869f40218c861, < 115ef44a98220fddfab37a39a19370497cd718b9 |
| Linux | Linux | 5.16 |
References
- https://git.kernel.org/stable/c/0f0a152957d64ce45b4c27c687e7d087e8f45079Patch
- https://git.kernel.org/stable/c/115ef44a98220fddfab37a39a19370497cd718b9Patch
- https://git.kernel.org/stable/c/5f996b4f80c2cef1f9c77275055e7fcba44c9199Patch
- https://git.kernel.org/stable/c/68896dd50180b38ea552e49a6a00b685321e5769Patch
- https://git.kernel.org/stable/c/d02c9acd68950a444acda18d514e2b41f846cb7fPatch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Timeline
- Published
- Apr 1, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Modified