CVE-2026-64039 (GCVE-0-2026-64039)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-08-05 12:38
VLAI
Title
drm/msm/snapshot: fix dumping of the unaligned regions
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/msm/snapshot: fix dumping of the unaligned regions The snapshotting code internally aligns data segment to 16 bytes. This works fine for DPU code (where most of the regions are aligned), but fails for snapshotting of the DSI data (because DSI data region is shifted by 4 bytes). Fix the code by removing length alignment and by accurately printing last registers in the region. While reworking the code also fix the 16x memory overallocation in msm_disp_state_dump_regs(). Patchwork: https://patchwork.freedesktop.org/patch/725449/
Severity
7.7 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 98659487b845c05b6bed85d881713545db674c7c , < 8fb070cf95847b29ef6cb15ec2c0de2bf4704676 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < cecd34e046121d788a70b5c8b4f8a88916637953 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 070e40acc59ef7bedba0314f59971ba87fcc8ab0 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 1ef79be774706dddcfcace0331fa7ff32a73c73e (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < cdd1aaf0ee962f50810b9aef7928f2313989d55f (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 0c90ececfad3fc5c4c43a75ece0e2d736ab3def1 (git)
Affected: 98659487b845c05b6bed85d881713545db674c7c , < 76824d2467feb1828b745d6add2541918d7be3da (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.142 , ≤ 6.6.* (semver)
Unaffected: 6.12.92 , ≤ 6.12.* (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/snapshot: fix dumping of the unaligned regions\n\nThe snapshotting code internally aligns data segment to 16 bytes. This\nworks fine for DPU code (where most of the regions are aligned), but\nfails for snapshotting of the DSI data (because DSI data region is\nshifted by 4 bytes). Fix the code by removing length alignment and by\naccurately printing last registers in the region. While reworking the\ncode also fix the 16x memory overallocation in\nmsm_disp_state_dump_regs().\n\nPatchwork: https://patchwork.freedesktop.org/patch/725449/"
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    "cveId": "CVE-2026-64039",
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    "dateReserved": "2026-07-19T07:54:57.028Z",
    "dateUpdated": "2026-08-05T12:38:32.825Z",
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While reworking the\\ncode also fix the 16x memory overallocation in\\nmsm_disp_state_dump_regs().\\n\\nPatchwork: https://patchwork.freedesktop.org/patch/725449/\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"98659487b845c05b6bed85d881713545db674c7c\",\"lessThan\":\"8fb070cf95847b29ef6cb15ec2c0de2bf4704676\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"98659487b845c05b6bed85d881713545db674c7c\",\"lessThan\":\"cecd34e046121d788a70b5c8b4f8a88916637953\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"98659487b845c05b6bed85d881713545db674c7c\",\"lessThan\":\"070e40acc59ef7bedba0314f59971ba87fcc8ab0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"98659487b845c05b6bed85d881713545db674c7c\",\"lessThan\":\"1ef79be774706dddcfcace0331fa7ff32a73c73e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"98659487b845c05b6bed85d881713545db674c7c\",\"lessThan\":\"cdd1aaf0ee962f50810b9aef7928f2313989d55f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"98659487b845c05b6bed85d881713545db674c7c\",\"lessThan\":\"0c90ececfad3fc5c4c43a75ece0e2d736ab3def1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"98659487b845c05b6bed85d881713545db674c7c\",\"lessThan\":\"76824d2467feb1828b745d6add2541918d7be3da\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.14\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.14\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.209\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.175\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.142\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.92\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.34\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.11\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.7,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.5,\"impactScore\":5.2}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/070e40acc59ef7bedba0314f59971ba87fcc8ab0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/0c90ececfad3fc5c4c43a75ece0e2d736ab3def1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1ef79be774706dddcfcace0331fa7ff32a73c73e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/76824d2467feb1828b745d6add2541918d7be3da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8fb070cf95847b29ef6cb15ec2c0de2bf4704676\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cdd1aaf0ee962f50810b9aef7928f2313989d55f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cecd34e046121d788a70b5c8b4f8a88916637953\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T06:27:35+00:00",
      "cve": "CVE-2026-64039",
      "id": "CVE-2026-64039",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/msm/snapshot: fix dumping of the unaligned regions",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64039.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-07T17:00:56Z",
      "cve": "CVE-2026-64039",
      "id": "CVE-2026-64039",
      "initial_release_date": "2026-07-21T13:00:55Z",
      "product_status:known_not_affected": "298",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64039",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64039.json",
      "version": "4"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.