Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: ima: Fix stack-out-of-bounds in is_bprm_creds_for_exec() KASAN reported a… (CVE-2025-71306)
In the Linux kernel, the following vulnerability has been resolved: ima: Fix stack-out-of-bounds in is_bprm_creds_for_exec() KASAN reported a stack-out-of-bounds access in ima_appraise_measurement from is_bprm_creds_for_exec: BUG: KASAN: stack-out-of-bounds in ima_appraise_measurement+0x12dc/0x16a0 Read of size 1 at addr ffffc9000160f940 by task sudo/550 The buggy address belongs to stack of task sudo/550 and is located at offset 24 in frame: ima_appraise_measurement+0x0/0x16a0 This frame has 2 objects: [48, 56) 'file' [80, 148) 'hash' This is caused by using container_of on the *file pointer. This offset calculation is what triggers the stack-out-of-bounds error. In order to fix this, pass in a bprm_is_check boolean which can be set depending on how process_measurement is called. If the caller has a linux_binprm pointer and the function is BPRM_CHECK we can determine is_check and set it then. Otherwise set it to false.
AI Analysis
Technical Summary
The Linux kernel's Integrity Measurement Architecture (IMA) had a stack-out-of-bounds vulnerability in the is_bprm_creds_for_exec() function, triggered by improper use of container_of on a file pointer leading to incorrect offset calculation. Kernel Address Sanitizer (KASAN) detected this out-of-bounds read during the ima_appraise_measurement call. The vulnerability was addressed by introducing a bprm_is_check boolean parameter to correctly determine the context and avoid the erroneous offset calculation. This vulnerability is tracked as CVE-2025-71306 and classified under CWE-125 (Out-of-bounds Read).
Potential Impact
The vulnerability allows a local attacker with limited privileges to cause a stack-out-of-bounds read, which can lead to denial of service and potentially expose sensitive kernel memory contents. The CVSS vector indicates high confidentiality and availability impact but no integrity impact. There are no known exploits in the wild as of the published date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch links are provided in the current data. Users should monitor Linux kernel updates for an official fix addressing CVE-2025-71306 and apply it once available.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: ima: Fix stack-out-of-bounds in is_bprm_creds_for_exec() KASAN reported a… (CVE-2025-71306)
Description
In the Linux kernel, the following vulnerability has been resolved: ima: Fix stack-out-of-bounds in is_bprm_creds_for_exec() KASAN reported a stack-out-of-bounds access in ima_appraise_measurement from is_bprm_creds_for_exec: BUG: KASAN: stack-out-of-bounds in ima_appraise_measurement+0x12dc/0x16a0 Read of size 1 at addr ffffc9000160f940 by task sudo/550 The buggy address belongs to stack of task sudo/550 and is located at offset 24 in frame: ima_appraise_measurement+0x0/0x16a0 This frame has 2 objects: [48, 56) 'file' [80, 148) 'hash' This is caused by using container_of on the *file pointer. This offset calculation is what triggers the stack-out-of-bounds error. In order to fix this, pass in a bprm_is_check boolean which can be set depending on how process_measurement is called. If the caller has a linux_binprm pointer and the function is BPRM_CHECK we can determine is_check and set it then. Otherwise set it to false.
CVSS v3.1
Score 7.1high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel's Integrity Measurement Architecture (IMA) had a stack-out-of-bounds vulnerability in the is_bprm_creds_for_exec() function, triggered by improper use of container_of on a file pointer leading to incorrect offset calculation. Kernel Address Sanitizer (KASAN) detected this out-of-bounds read during the ima_appraise_measurement call. The vulnerability was addressed by introducing a bprm_is_check boolean parameter to correctly determine the context and avoid the erroneous offset calculation. This vulnerability is tracked as CVE-2025-71306 and classified under CWE-125 (Out-of-bounds Read).
Potential Impact
The vulnerability allows a local attacker with limited privileges to cause a stack-out-of-bounds read, which can lead to denial of service and potentially expose sensitive kernel memory contents. The CVSS vector indicates high confidentiality and availability impact but no integrity impact. There are no known exploits in the wild as of the published date.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch links are provided in the current data. Users should monitor Linux kernel updates for an official fix addressing CVE-2025-71306 and apply it once available.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-cw2f-qvgg-223g
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2025-71306"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a3ef7f227e9c79719036e3d
Added to database: 06/26/2026, 22:06:42 UTC
Last enriched: 06/26/2026, 22:51:57 UTC
Last updated: 07/31/2026, 19:22:56 UTC
Views: 81
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