net/mlx5: fw_tracer, Validate format string parameters
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: fw_tracer, Validate format string parameters Add validation for format string parameters in the firmware tracer to prevent potential security vulnerabilities and crashes from malformed format strings received from firmware. The firmware tracer receives format strings from the device firmware and uses them to format trace messages. Without proper validation, bad firmware could provide format strings with invalid format specifiers (e.g., %s, %p, %n) that could lead to crashes, or other undefined behavior. Add mlx5_tracer_validate_params() to validate that all format specifiers in trace strings are limited to safe integer/hex formats (%x, %d, %i, %u, %llx, %lx, etc.). Reject strings containing other format types that could be used to access arbitrary memory or cause crashes. Invalid format strings are added to the trace output for visibility with "BAD_FORMAT: " prefix.
CVE-2025-68816
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2025-68816
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
"lessThan": "95624b731c490a4b849844269193a233d6d556a0",
"versionType": "git"
},
{
"status": "affected",
"version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
"lessThan": "768d559f466cdd72849110a7ecd76a21d52dcfe3",
"versionType": "git"
},
{
"status": "affected",
"version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
"lessThan": "38ac688b52ef26a88f8bc4fe26d24fdd0ff91e5d",
"versionType": "git"
},
{
"status": "affected",
"version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
"lessThan": "8ac688c0e430dab19f6a9b70df94b1f635612c1a",
"versionType": "git"
},
{
"status": "affected",
"version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
"lessThan": "45bd283b1d69e2c97cddcb9956f0e0261fc4efd7",
"versionType": "git"
},
{
"status": "affected",
"version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
"lessThan": "8c35c2448086870509ede43947845be0833251f0",
"versionType": "git"
},
{
"status": "affected",
"version": "70dd6fdb8987b14f7b6105f6be0617299e459398",
"lessThan": "b35966042d20b14e2d83330049f77deec5229749",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c",
"drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.64",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c",
"drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2025-68816
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #39133 · Revision 1
- Added to Heist Feed
- Publisher date