Vulnerability-Lookup

GHSA-HFV7-F5X8-PGRV

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

In the Linux kernel, the following vulnerability has been resolved:

uprobes/x86: Use proper mm_struct in __in_uprobe_trampoline

In the unregister path we use __in_uprobe_trampoline check with current->mm for the VMA lookup, which is wrong, because we are in the tracer context, not the traced process.

Add mm_struct pointer argument to __in_uprobe_trampoline and changing related callers to pass proper mm_struct pointer.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72357"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:09Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nuprobes/x86: Use proper mm_struct in __in_uprobe_trampoline\n\nIn the unregister path we use __in_uprobe_trampoline check with\ncurrent-\u003emm for the VMA lookup, which is wrong, because we are\nin the tracer context, not the traced process.\n\nAdd mm_struct pointer argument to __in_uprobe_trampoline and\nchanging related callers to pass proper mm_struct pointer.",
  "id": "GHSA-hfv7-f5x8-pgrv",
  "modified": "2026-08-17T06:33:25Z",
  "published": "2026-08-15T06:32:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72357"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/169328645663bae30e9abad4012d52441e085a71"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1acddd3e22dd6912dd5d54f80462405a1f1e6bae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9170c83b0e0fc2065a4c2bca5bf1f90c5880156"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-72357 (GCVE-0-2026-72357)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:43

Title

uprobes/x86: Use proper mm_struct in __in_uprobe_trampoline

Summary

In the Linux kernel, the following vulnerability has been resolved: uprobes/x86: Use proper mm_struct in __in_uprobe_trampoline In the unregister path we use __in_uprobe_trampoline check with current->mm for the VMA lookup, which is wrong, because we are in the tracer context, not the traced process. Add mm_struct pointer argument to __in_uprobe_trampoline and changing related callers to pass proper mm_struct pointer.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/c9170c83b0e0fc206…
https://git.kernel.org/stable/c/1acddd3e22dd6912d…
https://git.kernel.org/stable/c/169328645663bae30…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ba2bfc97b4629b10bd8d02b36e04f3932a04cac4 , < c9170c83b0e0fc2065a4c2bca5bf1f90c5880156 (git) Affected: ba2bfc97b4629b10bd8d02b36e04f3932a04cac4 , < 1acddd3e22dd6912dd5d54f80462405a1f1e6bae (git) Affected: ba2bfc97b4629b10bd8d02b36e04f3932a04cac4 , < 169328645663bae30e9abad4012d52441e085a71 (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kernel/uprobes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c9170c83b0e0fc2065a4c2bca5bf1f90c5880156",
              "status": "affected",
              "version": "ba2bfc97b4629b10bd8d02b36e04f3932a04cac4",
              "versionType": "git"
            },
            {
              "lessThan": "1acddd3e22dd6912dd5d54f80462405a1f1e6bae",
              "status": "affected",
              "version": "ba2bfc97b4629b10bd8d02b36e04f3932a04cac4",
              "versionType": "git"
            },
            {
              "lessThan": "169328645663bae30e9abad4012d52441e085a71",
              "status": "affected",
              "version": "ba2bfc97b4629b10bd8d02b36e04f3932a04cac4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/x86/kernel/uprobes.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nuprobes/x86: Use proper mm_struct in __in_uprobe_trampoline\n\nIn the unregister path we use __in_uprobe_trampoline check with\ncurrent-\u003emm for the VMA lookup, which is wrong, because we are\nin the tracer context, not the traced process.\n\nAdd mm_struct pointer argument to __in_uprobe_trampoline and\nchanging related callers to pass proper mm_struct pointer."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Reachable only via local syscalls (bpf/BPF_PROG_LOAD, bpf/BPF_LINK_CREATE for uprobes, perf_event_open, close/exit) that register and tear down x86 optimized uprobes; no network, adjacent, or physical entry path exists.\nAC:L - Syzkaller reproduced this reliably by attaching a BPF uprobe-multi link and exiting; the attacker controls probe registration, target file/offset, and teardown timing, including cases where unregister runs with current-\u003emm NULL or a tracer mm.\nPR:L - Triggering requires CAP_BPF plus CAP_PERFMON for BPF uprobes or CAP_SYS_ADMIN for perf uprobes; these capabilities are grantable inside user namespaces and do not require init-namespace root under kernel CNA guidance.\nUI:N - No victim interaction is required; a local attacker fully drives uprobe attach and unregister (including process exit closing the BPF link), without needing another user to open files or perform actions.\nS:U - Impact stays within the kernel/host privilege domain (kernel panic and corruption of probed process executable text); it does not cross a VM, container, or IOMMU security boundary that would change CVSS scope.\nC:H - Using the wrong mm for trampoline VMA lookup can mis-detect optimization state and drive int3_update/unoptimize on executable pages; this class of kernel memory corruption is exploitable for information disclosure, not merely a bounded leak.\nI:H - Incorrect is_optimized decisions during unregister can invoke swbp_unoptimize/int3_update on the traced vma, writing attacker-influenced instruction bytes into executable mappings and enabling control-flow hijack in the probed process.\nA:H - Syzkaller hit a KASAN null-ptr-deref GPF in mtree_load via set_orig_insn during bpf_uprobe_multi_link_release on process exit, producing an oops and kernel panic; repeated attach/exit can deny service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:43:15.438Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c9170c83b0e0fc2065a4c2bca5bf1f90c5880156"
        },
        {
          "url": "https://git.kernel.org/stable/c/1acddd3e22dd6912dd5d54f80462405a1f1e6bae"
        },
        {
          "url": "https://git.kernel.org/stable/c/169328645663bae30e9abad4012d52441e085a71"
        }
      ],
      "title": "uprobes/x86: Use proper mm_struct in __in_uprobe_trampoline",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72357",
    "datePublished": "2026-08-15T05:55:58.124Z",
    "dateReserved": "2026-08-09T03:40:39.921Z",
    "dateUpdated": "2026-08-17T05:43:15.438Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-HFV7-F5X8-PGRV

CVE-2026-72357 (GCVE-0-2026-72357)

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Sightings

Nomenclature