Answer in brief
CVE-2025-39810 records a High severity (CVSS 7.8) vulnerability in bnxt_en: Fix memory corruption when FW resources change during ifdown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ec5d31e3c15d5233b491400133c67f78a320062c <d00e98977ef519280b075d783653e2c492fffbb6 || >=ec5d31e3c15d5233b491400133c67f78a320062c <9ab6a9950f152e094395d2e3967f889857daa185 || >=ec5d31e3c15d5233b491400133c67f78a320062c <2747328ba2714f1a7454208dbbc1dc0631990b4a | d00e98977ef519280b075d783653e2c492fffbb6, 9ab6a9950f152e094395d2e3967f889857daa185, 2747328ba2714f1a7454208dbbc1dc0631990b4a |
| Linux/Linuxgeneric | 5.4 | Not reported |
| Linux/Linuxgeneric | >=ec5d31e3c15d5233b491400133c67f78a320062c <dc797a4bbbcac6d19e6e2508e4df685755cd94a5 || >=ec5d31e3c15d5233b491400133c67f78a320062c <d00e98977ef519280b075d783653e2c492fffbb6 || >=ec5d31e3c15d5233b491400133c67f78a320062c <9ab6a9950f152e094395d2e3967f889857daa185 || >=ec5d31e3c15d5233b491400133c67f78a320062c <2747328ba2714f1a7454208dbbc1dc0631990b4a | dc797a4bbbcac6d19e6e2508e4df685755cd94a5, d00e98977ef519280b075d783653e2c492fffbb6, 9ab6a9950f152e094395d2e3967f889857daa185, 2747328ba2714f1a7454208dbbc1dc0631990b4a |
| Linux/Linuxgeneric | >=ec5d31e3c15d5233b491400133c67f78a320062c <c0082a8947cf1a543013346d10c1857f0c57db83 || >=ec5d31e3c15d5233b491400133c67f78a320062c <dc797a4bbbcac6d19e6e2508e4df685755cd94a5 || >=ec5d31e3c15d5233b491400133c67f78a320062c <d00e98977ef519280b075d783653e2c492fffbb6 || >=ec5d31e3c15d5233b491400133c67f78a320062c <9ab6a9950f152e094395d2e3967f889857daa185 || >=ec5d31e3c15d5233b491400133c67f78a320062c <2747328ba2714f1a7454208dbbc1dc0631990b4a | c0082a8947cf1a543013346d10c1857f0c57db83, dc797a4bbbcac6d19e6e2508e4df685755cd94a5, d00e98977ef519280b075d783653e2c492fffbb6, 9ab6a9950f152e094395d2e3967f889857daa185, 2747328ba2714f1a7454208dbbc1dc0631990b4a |
Published upstream
Sep 16, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix memory corruption when FW resources change during ifdown bnxt_set_dflt_rings() assumes that it is always called before any TC has been created. So it doesn't take bp->num_tc into account and assumes that it is always 0 or 1. In the FW resource or capability change scenario, the FW will return flags in bnxt_hwrm_if_change() that will cause the driver to reinitialize and call bnxt_cancel_reservations(). This will lead to bnxt_init_dflt_ring_mode() calling bnxt_set_dflt_rings() and bp->num_tc may be greater than 1. This will cause bp->tx_ring[] to be sized too small and cause memory corruption in bnxt_alloc_cp_rings(). Fix it by properly scaling the TX rings by bp->num_tc in the code paths mentioned above. Add 2 helper functions to determine bp->tx_nr_rings and bp->tx_nr_rings_per_tc.
Quoted source text, attributed separately from HOL analysis.