CVE-2025-22108
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
bnxt_en: Mask the bd_cnt field in the TX BD properly
The bd_cnt field in the TX BD specifies the total number of BDs for the TX packet. The bd_cnt field has 5 bits and the maximum number supported is 32 with the value 0.
CONFIG_MAX_SKB_FRAGS can be modified and the total number of SKB fragments can approach or exceed the maximum supported by the chip. Add a macro to properly mask the bd_cnt field so that the value 32 will be properly masked and set to 0 in the bd_cnd field.
Without this patch, the out-of-range bd_cnt value will corrupt the TX BD and may cause TX timeout.
The next patch will check for values exceeding 32.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 3948b05950fdd64002a5f182c65ba5cf2d53cf71 < f60b41b815826f15c4d0323f923f398c423178d0 | affected |
| Linux | Linux | 3948b05950fdd64002a5f182c65ba5cf2d53cf71 < 107b25db61122d8f990987895c2912927b8b6e3f | affected |
| Linux | Linux | 6.4 | affected |
| Linux | Linux | 0 < 6.4 | unaffected |
| Linux | Linux | 6.14.2 <= 6.14.* | unaffected |
| Linux | Linux | 6.15 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/f60b41b815826f15c4d0323f923f398c423178d0
- https://git.kernel.org/stable/c/107b25db61122d8f990987895c2912927b8b6e3f
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