Vulnerability-Lookup

FKIE_CVE-2025-71139

Vulnerability from fkie_nvd - Published: 2026-01-14 15:16 - Updated: 2026-03-25 18:03

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: kernel/kexec: fix IMA when allocation happens in CMA area *** Bug description *** When I tested kexec with the latest kernel, I ran into the following warning: [ 40.712410] ------------[ cut here ]------------ [ 40.712576] WARNING: CPU: 2 PID: 1562 at kernel/kexec_core.c:1001 kimage_map_segment+0x144/0x198 [...] [ 40.816047] Call trace: [ 40.818498] kimage_map_segment+0x144/0x198 (P) [ 40.823221] ima_kexec_post_load+0x58/0xc0 [ 40.827246] __do_sys_kexec_file_load+0x29c/0x368 [...] [ 40.855423] ---[ end trace 0000000000000000 ]--- *** How to reproduce *** This bug is only triggered when the kexec target address is allocated in the CMA area. If no CMA area is reserved in the kernel, use the "cma=" option in the kernel command line to reserve one. *** Root cause *** The commit 07d24902977e ("kexec: enable CMA based contiguous allocation") allocates the kexec target address directly on the CMA area to avoid copying during the jump. In this case, there is no IND_SOURCE for the kexec segment. But the current implementation of kimage_map_segment() assumes that IND_SOURCE pages exist and map them into a contiguous virtual address by vmap(). *** Solution *** If IMA segment is allocated in the CMA area, use its page_address() directly.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a3785ae5d334bb71d47a593d54c686a03fb9d136	Patch
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a843e4155c83211c55b1b6cc17eab27a6a2c5b6f	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	6.17
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19
linux	linux_kernel	6.19

JSON

To clipboard

{
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkernel/kexec: fix IMA when allocation happens in CMA area\n\n*** Bug description ***\n\nWhen I tested kexec with the latest kernel, I ran into the following warning:\n\n[   40.712410] ------------[ cut here ]------------\n[   40.712576] WARNING: CPU: 2 PID: 1562 at kernel/kexec_core.c:1001 kimage_map_segment+0x144/0x198\n[...]\n[   40.816047] Call trace:\n[   40.818498]  kimage_map_segment+0x144/0x198 (P)\n[   40.823221]  ima_kexec_post_load+0x58/0xc0\n[   40.827246]  __do_sys_kexec_file_load+0x29c/0x368\n[...]\n[   40.855423] ---[ end trace 0000000000000000 ]---\n\n*** How to reproduce ***\n\nThis bug is only triggered when the kexec target address is allocated in\nthe CMA area. If no CMA area is reserved in the kernel, use the \"cma=\"\noption in the kernel command line to reserve one.\n\n*** Root cause ***\nThe commit 07d24902977e (\"kexec: enable CMA based contiguous\nallocation\") allocates the kexec target address directly on the CMA area\nto avoid copying during the jump. In this case, there is no IND_SOURCE\nfor the kexec segment.  But the current implementation of\nkimage_map_segment() assumes that IND_SOURCE pages exist and map them\ninto a contiguous virtual address by vmap().\n\n*** Solution ***\nIf IMA segment is allocated in the CMA area, use its page_address()\ndirectly."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nkernel/kexec: corregir IMA cuando la asignaci\u00f3n se produce en el \u00e1rea CMA\n\n* Descripci\u00f3n del error *\n\nCuando prob\u00e9 kexec con el kernel m\u00e1s reciente, me encontr\u00e9 con la siguiente advertencia:\n\n[   40.712410] ------------[ cut here ]------------\n[   40.712576] WARNING: CPU: 2 PID: 1562 at kernel/kexec_core.c:1001 kimage_map_segment+0x144/0x198\n[...]\n[   40.816047] Call trace:\n[   40.818498]  kimage_map_segment+0x144/0x198 (P)\n[   40.823221]  ima_kexec_post_load+0x58/0xc0\n[   40.827246]  __do_sys_kexec_file_load+0x29c/0x368\n[...]\n[   40.855423] ---[ end trace 0000000000000000 ]---\n\n* C\u00f3mo reproducir *\n\nEste error solo se activa cuando la direcci\u00f3n de destino de kexec se asigna en el \u00e1rea CMA. Si no se reserva ning\u00fan \u00e1rea CMA en el kernel, use la opci\u00f3n \u0027cma=\u0027 en la l\u00ednea de comandos del kernel para reservar una.\n\n* Causa ra\u00edz *\nEl commit 07d24902977e (\u0027kexec: habilitar asignaci\u00f3n contigua basada en CMA\u0027) asigna la direcci\u00f3n de destino de kexec directamente en el \u00e1rea CMA para evitar la copia durante el salto. En este caso, no hay IND_SOURCE para el segmento kexec. Pero la implementaci\u00f3n actual de kimage_map_segment() asume que las p\u00e1ginas IND_SOURCE existen y las mapea en una direcci\u00f3n virtual contigua mediante vmap().\n\n* Soluci\u00f3n *\nSi el segmento IMA se asigna en el \u00e1rea CMA, use su page_address() directamente."
    }
  ],
  "id": "CVE-2025-71139",
  "lastModified": "2026-03-25T18:03:03.093",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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CVE-2025-71139 (GCVE-0-2025-71139)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:07 – Updated: 2026-02-09 08:35

Title

kernel/kexec: fix IMA when allocation happens in CMA area

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/a843e4155c83211c5…
	https://git.kernel.org/stable/c/a3785ae5d334bb71d…

Impacted products

Vendor

Product

Version

Linux

Affected: 07d24902977e4704fab8472981e73a0ad6dfa1fd , < a843e4155c83211c55b1b6cc17eab27a6a2c5b6f (git)
Affected: 07d24902977e4704fab8472981e73a0ad6dfa1fd , < a3785ae5d334bb71d47a593d54c686a03fb9d136 (git)

Linux

Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.18.4 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/kexec_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "a843e4155c83211c55b1b6cc17eab27a6a2c5b6f",
              "status": "affected",
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              "versionType": "git"
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              "lessThan": "a3785ae5d334bb71d47a593d54c686a03fb9d136",
              "status": "affected",
              "version": "07d24902977e4704fab8472981e73a0ad6dfa1fd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
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            "kernel/kexec_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
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        }
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        }
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      "providerMetadata": {
        "dateUpdated": "2026-02-09T08:35:36.533Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/a3785ae5d334bb71d47a593d54c686a03fb9d136"
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      "title": "kernel/kexec: fix IMA when allocation happens in CMA area",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71139",
    "datePublished": "2026-01-14T15:07:52.658Z",
    "dateReserved": "2026-01-13T15:30:19.656Z",
    "dateUpdated": "2026-02-09T08:35:36.533Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2025-71139

CVE-2025-71139 (GCVE-0-2025-71139)

Tags

Sightings

Nomenclature