CVE-2025-71306 (GCVE-0-2025-71306)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:14 – Updated: 2026-10-21 12:38
VLAI
Title
ima: Fix stack-out-of-bounds in is_bprm_creds_for_exec()
Summary
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.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7064 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 95b3cdafd7cb74414070893445a9b731793f7b55 , < 0f39d936a34933ebfbdc13a04f0aba814d3b9709 (git)
Affected: 95b3cdafd7cb74414070893445a9b731793f7b55 , < ab3d16da982a4ebb715d487dbf9dd66e3990d935 (git)
Affected: 95b3cdafd7cb74414070893445a9b731793f7b55 , < 377cae9851e8559e9d8b82a78c1ac0abeb18839c (git)
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Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.18.58 , ≤ 6.18.* (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: Fix stack-out-of-bounds in is_bprm_creds_for_exec()\n\nKASAN reported a stack-out-of-bounds access in ima_appraise_measurement\nfrom is_bprm_creds_for_exec:\n\nBUG: KASAN: stack-out-of-bounds in ima_appraise_measurement+0x12dc/0x16a0\n Read of size 1 at addr ffffc9000160f940 by task sudo/550\nThe buggy address belongs to stack of task sudo/550\nand is located at offset 24 in frame:\n  ima_appraise_measurement+0x0/0x16a0\nThis frame has 2 objects:\n  [48, 56) \u0027file\u0027\n  [80, 148) \u0027hash\u0027\n\nThis is caused by using container_of on the *file pointer. This offset\ncalculation is what triggers the stack-out-of-bounds error.\n\nIn order to fix this, pass in a bprm_is_check boolean which can be set\ndepending on how process_measurement is called. If the caller has a\nlinux_binprm pointer and the function is BPRM_CHECK we can determine\nis_check and set it then. Otherwise set it to false."
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nima: Fix stack-out-of-bounds in is_bprm_creds_for_exec()\n\nKASAN reported a stack-out-of-bounds access in ima_appraise_measurement\nfrom is_bprm_creds_for_exec:\n\nBUG: KASAN: stack-out-of-bounds in ima_appraise_measurement+0x12dc/0x16a0\n Read of size 1 at addr ffffc9000160f940 by task sudo/550\nThe buggy address belongs to stack of task sudo/550\nand is located at offset 24 in frame:\n  ima_appraise_measurement+0x0/0x16a0\nThis frame has 2 objects:\n  [48, 56) \u0027file\u0027\n  [80, 148) \u0027hash\u0027\n\nThis is caused by using container_of on the *file pointer. This offset\ncalculation is what triggers the stack-out-of-bounds error.\n\nIn order to fix this, pass in a bprm_is_check boolean which can be set\ndepending on how process_measurement is called. If the caller has a\nlinux_binprm pointer and the function is BPRM_CHECK we can determine\nis_check and set it then. Otherwise set it to false."
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nima: Correcci\u00f3n de acceso fuera de l\u00edmites de la pila en is_bprm_creds_for_exec()\n\nKASAN inform\u00f3 un acceso fuera de l\u00edmites de la pila en ima_appraise_measurement desde is_bprm_creds_for_exec:\n\nERROR: KASAN: acceso fuera de l\u00edmites de la pila en ima_appraise_measurement+0x12dc/0x16a0\n Lectura de tama\u00f1o 1 en la direcci\u00f3n ffffc9000160f940 por la tarea sudo/550\nLa direcci\u00f3n defectuosa pertenece a la pila de la tarea sudo/550\ny est\u00e1 ubicada en el desplazamiento 24 en el marco:\n  ima_appraise_measurement+0x0/0x16a0\nEste marco tiene 2 objetos:\n  [48, 56) \u0027file\u0027\n  [80, 148) \u0027hash\u0027\n\nEsto es causado por usar container_of en el puntero file. Este c\u00e1lculo de desplazamiento es lo que desencadena el error de acceso fuera de l\u00edmites de la pila.\n\nPara solucionar esto, pasar un booleano bprm_is_check que puede ser establecido dependiendo de c\u00f3mo se llama a process_measurement. Si el llamador tiene un puntero linux_binprm y la funci\u00f3n es BPRM_CHECK, podemos determinar is_check y establecerlo entonces. De lo contrario, establecerlo en falso."
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        "id": "CVE-2025-71306",
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      "cve": "CVE-2025-71306",
      "id": "CVE-2025-71306",
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      "product_status:known_not_affected": "274",
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      "title": "kernel: ima: Fix stack-out-of-bounds in is_bprm_creds_for_exec()",
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      "cve": "CVE-2025-71306",
      "id": "CVE-2025-71306",
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      "product_status:known_affected": "0",
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      "status": "interim",
      "title": "SUSE CVE CVE-2025-71306",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2026/cve-2025-71306.json",
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}



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