Answer in brief
CVE-2025-37984 records a High severity (CVSS 7.0) vulnerability in crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP(). The current sources do not mark it as known exploited. The current feed maps 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 7.0. 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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=55779f26eab9af12474a447001bd17070f055712 <f02f0218be412cff1c844addf58e002071be298b || >=c6ab5c915da460c0397960af3c308386c3f3247b <f2133b849ff273abddb6da622daddd8f6f6fa448 || >=c6ab5c915da460c0397960af3c308386c3f3247b <921b8167f10708e38080f84e195cdc68a7a561f1 || >=c6ab5c915da460c0397960af3c308386c3f3247b <b16510a530d1e6ab9683f04f8fb34f2e0f538275 || >=6.6.70 <6.6.99 | f02f0218be412cff1c844addf58e002071be298b, f2133b849ff273abddb6da622daddd8f6f6fa448, 921b8167f10708e38080f84e195cdc68a7a561f1, b16510a530d1e6ab9683f04f8fb34f2e0f538275, 6.6.99 |
| Linux/Linuxgeneric | 6.10 | Not reported |
Published upstream
May 20, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 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: crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() Herbert notes that DIV_ROUND_UP() may overflow unnecessarily if an ecdsa implementation's ->key_size() callback returns an unusually large value. Herbert instead suggests (for a division by 8): X / 8 + !!(X & 7) Based on this formula, introduce a generic DIV_ROUND_UP_POW2() macro and use it in lieu of DIV_ROUND_UP() for ->key_size() return values. Additionally, use the macro in ecc_digits_from_bytes(), whose "nbytes" parameter is a ->key_size() return value in some instances, or a user-specified ASN.1 length in the case of ecdsa_get_signature_rs().
Quoted source text, attributed separately from HOL analysis.