Kernel memory disclosure and crash via fw_list
Published May 9, 2025 · Updated Aug 5, 2026
Out-of-bounds reads in affected Linux kernel pds_core releases from 6.4 allow local users to disclose kernel memory or crash the host. When PDS_CORE_CMD_FW_CONTROL returns an error, pdsc_dl_info_get leaves fw_list uninitialized, trusts its garbage num_fw_slots value, walks past fw_names, and copies uninitialized stack data into a devlink netlink reply. Reachability requires a local unprivileged account in the initial network namespace and an AMD Pensando DSC or device state that returns EIO; repeated queries can expose kernel pointers and stack canaries or trigger a kernel oops.
Summary
What happened
Out-of-bounds reads in affected Linux kernel pds_core releases from 6.4 allow local users to disclose kernel memory or crash the host. When PDS_CORE_CMD_FW_CONTROL returns an error, pdsc_dl_info_get leaves fw_list uninitialized, trusts its garbage num_fw_slots value, walks past fw_names, and copies uninitialized stack data into a devlink netlink reply. Reachability requires a local unprivileged account in the initial network namespace and an AMD Pensando DSC or device state that returns EIO; repeated queries can expose kernel pointers and stack canaries or trigger a kernel oops.
The record
- CVE
- CVE-2025-37887
- Published
- May 9, 2025
- Updated
- Aug 5, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004, T1005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 9, 2025CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=45d76f492938cdc27ddadc16e1e75103f4cfbf56 <12a4651a80dbe4589a84e26785fbbe1ed4d043b7
- Affected versionversion=45d76f492938cdc27ddadc16e1e75103f4cfbf56 <2567daad69cd1107fc0ec29b1615f110d7cf7385
- Affected versionversion=45d76f492938cdc27ddadc16e1e75103f4cfbf56 <6702f5c6b22deaa95bf84f526148174a160a02cb
- Affected versionversion=45d76f492938cdc27ddadc16e1e75103f4cfbf56 <cdd784c96fe2e5edbf0ed9b3e96fe776e8092385
- Affected versionversion=6.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo