Vulnerability-Lookup

GHSA-4G9Q-6GCQ-F3VX

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-05-07 15:31

Details

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

tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()

test_gen_kprobe_cmd() only free buf in fail path, hence buf will leak when there is no failure. Move kfree(buf) from fail path to common path to prevent the memleak. The same reason and solution in test_gen_kretprobe_cmd().

unreferenced object 0xffff888143b14000 (size 2048): comm "insmod", pid 52490, jiffies 4301890980 (age 40.553s) hex dump (first 32 bytes): 70 3a 6b 70 72 6f 62 65 73 2f 67 65 6e 5f 6b 70 p:kprobes/gen_kp 72 6f 62 65 5f 74 65 73 74 20 64 6f 5f 73 79 73 robe_test do_sys backtrace: [<000000006d7b836b>] kmalloc_trace+0x27/0xa0 [<0000000009528b5b>] 0xffffffffa059006f [<000000008408b580>] do_one_initcall+0x87/0x2a0 [<00000000c4980a7e>] do_init_module+0xdf/0x320 [<00000000d775aad0>] load_module+0x3006/0x3390 [<00000000e9a74b80>] __do_sys_finit_module+0x113/0x1b0 [<000000003726480d>] do_syscall_64+0x35/0x80 [<000000003441e93b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49891"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:14Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()\n\ntest_gen_kprobe_cmd() only free buf in fail path, hence buf will leak\nwhen there is no failure. Move kfree(buf) from fail path to common path\nto prevent the memleak. The same reason and solution in\ntest_gen_kretprobe_cmd().\n\nunreferenced object 0xffff888143b14000 (size 2048):\n  comm \"insmod\", pid 52490, jiffies 4301890980 (age 40.553s)\n  hex dump (first 32 bytes):\n    70 3a 6b 70 72 6f 62 65 73 2f 67 65 6e 5f 6b 70  p:kprobes/gen_kp\n    72 6f 62 65 5f 74 65 73 74 20 64 6f 5f 73 79 73  robe_test do_sys\n  backtrace:\n    [\u003c000000006d7b836b\u003e] kmalloc_trace+0x27/0xa0\n    [\u003c0000000009528b5b\u003e] 0xffffffffa059006f\n    [\u003c000000008408b580\u003e] do_one_initcall+0x87/0x2a0\n    [\u003c00000000c4980a7e\u003e] do_init_module+0xdf/0x320\n    [\u003c00000000d775aad0\u003e] load_module+0x3006/0x3390\n    [\u003c00000000e9a74b80\u003e] __do_sys_finit_module+0x113/0x1b0\n    [\u003c000000003726480d\u003e] do_syscall_64+0x35/0x80\n    [\u003c000000003441e93b\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0",
  "id": "GHSA-4g9q-6gcq-f3vx",
  "modified": "2025-05-07T15:31:26Z",
  "published": "2025-05-01T15:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49891"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/66f0919c953ef7b55e5ab94389a013da2ce80a2c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71aeb8d01a8c7ab5cf7da3f81b35206f56ce6bca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bef08acbe560a926b4cee9cc46404cc98ae5703b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1b6a8e3414aeaa0985139180c145d2d0fbd2a49"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49891 (GCVE-0-2022-49891)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2026-05-11 19:08

Title

tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()

Summary

In the Linux kernel, the following vulnerability has been resolved: tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd() test_gen_kprobe_cmd() only free buf in fail path, hence buf will leak when there is no failure. Move kfree(buf) from fail path to common path to prevent the memleak. The same reason and solution in test_gen_kretprobe_cmd(). unreferenced object 0xffff888143b14000 (size 2048): comm "insmod", pid 52490, jiffies 4301890980 (age 40.553s) hex dump (first 32 bytes): 70 3a 6b 70 72 6f 62 65 73 2f 67 65 6e 5f 6b 70 p:kprobes/gen_kp 72 6f 62 65 5f 74 65 73 74 20 64 6f 5f 73 79 73 robe_test do_sys backtrace: [<000000006d7b836b>] kmalloc_trace+0x27/0xa0 [<0000000009528b5b>] 0xffffffffa059006f [<000000008408b580>] do_one_initcall+0x87/0x2a0 [<00000000c4980a7e>] do_init_module+0xdf/0x320 [<00000000d775aad0>] load_module+0x3006/0x3390 [<00000000e9a74b80>] __do_sys_finit_module+0x113/0x1b0 [<000000003726480d>] do_syscall_64+0x35/0x80 [<000000003441e93b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-10-01 16:02 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7067 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/bef08acbe560a926b…
https://git.kernel.org/stable/c/d1b6a8e3414aeaa09…
https://git.kernel.org/stable/c/71aeb8d01a8c7ab5c…
https://git.kernel.org/stable/c/66f0919c953ef7b55…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < bef08acbe560a926b4cee9cc46404cc98ae5703b (git) Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < d1b6a8e3414aeaa0985139180c145d2d0fbd2a49 (git) Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < 71aeb8d01a8c7ab5cf7da3f81b35206f56ce6bca (git) Affected: 64836248dda20c8e7427b493f7e06d9bf8f58850 , < 66f0919c953ef7b55e5ab94389a013da2ce80a2c (git)
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (semver) Unaffected: 5.10.154 , ≤ 5.10.* (semver) Unaffected: 5.15.78 , ≤ 5.15.* (semver) Unaffected: 6.0.8 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix)

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JSON

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    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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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                "id": "CVE-2022-49891",
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                "timestamp": "2025-10-01T16:02:33.186750Z",
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    ],
    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
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          ],
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              "lessThanOrEqual": "*",
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      "cpeApplicability": [
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        "dateUpdated": "2026-05-11T19:08:44.405Z",
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      "title": "tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()",
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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.

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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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