CVE-2023-53649 (GCVE-0-2023-53649)

Vulnerability from cvelistv5 – Published: 2025-10-07 15:19 – Updated: 2026-05-11 19:49
VLAI
Title
perf trace: Really free the evsel->priv area
Summary
In the Linux kernel, the following vulnerability has been resolved: perf trace: Really free the evsel->priv area In 3cb4d5e00e037c70 ("perf trace: Free syscall tp fields in evsel->priv") it only was freeing if strcmp(evsel->tp_format->system, "syscalls") returned zero, while the corresponding initialization of evsel->priv was being performed if it was _not_ zero, i.e. if the tp system wasn't 'syscalls'. Just stop looking for that and free it if evsel->priv was set, which should be equivalent. Also use the pre-existing evsel_trace__delete() function. This resolves these leaks, detected with: $ make EXTRA_CFLAGS="-fsanitize=address" BUILD_BPF_SKEL=1 CORESIGHT=1 O=/tmp/build/perf-tools-next -C tools/perf install-bin ================================================================= ==481565==ERROR: LeakSanitizer: detected memory leaks Direct leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097) #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966) #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307 #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333 #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458 #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480 #6 0x540e8b in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3212 #7 0x540e8b in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891 #8 0x540e8b in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156 #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323 #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377 #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421 #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537 #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f) Direct leak of 40 byte(s) in 1 object(s) allocated from: #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097) #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966) #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307 #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333 #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458 #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480 #6 0x540dd1 in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3205 #7 0x540dd1 in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891 #8 0x540dd1 in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156 #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323 #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377 #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421 #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537 #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f) SUMMARY: AddressSanitizer: 80 byte(s) leaked in 2 allocation(s). [root@quaco ~]# With this we plug all leaks with "perf trace sleep 1".
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < c3bc668581e71e7c3bc7eb1d647f25f8db222163 (git)
Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < 62dd514c34be63d3d5cae1f52a7e8b96c6dd6630 (git)
Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < 27f396f64537b1ae48d0644d7cbf0d250b3c0b33 (git)
Affected: 3cb4d5e00e037c70f239173bdd399a7e6040830f , < 7962ef13651a9163f07b530607392ea123482e8a (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.54 , ≤ 6.1.* (semver)
Unaffected: 6.5.4 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf trace: Really free the evsel-\u003epriv area\n\nIn 3cb4d5e00e037c70 (\"perf trace: Free syscall tp fields in\nevsel-\u003epriv\") it only was freeing if strcmp(evsel-\u003etp_format-\u003esystem,\n\"syscalls\") returned zero, while the corresponding initialization of\nevsel-\u003epriv was being performed if it was _not_ zero, i.e. if the tp\nsystem wasn\u0027t \u0027syscalls\u0027.\n\nJust stop looking for that and free it if evsel-\u003epriv was set, which\nshould be equivalent.\n\nAlso use the pre-existing evsel_trace__delete() function.\n\nThis resolves these leaks, detected with:\n\n  $ make EXTRA_CFLAGS=\"-fsanitize=address\" BUILD_BPF_SKEL=1 CORESIGHT=1 O=/tmp/build/perf-tools-next -C tools/perf install-bin\n\n  =================================================================\n  ==481565==ERROR: LeakSanitizer: detected memory leaks\n\n  Direct leak of 40 byte(s) in 1 object(s) allocated from:\n      #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097)\n      #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966)\n      #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307\n      #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333\n      #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458\n      #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480\n      #6 0x540e8b in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3212\n      #7 0x540e8b in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891\n      #8 0x540e8b in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156\n      #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323\n      #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377\n      #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421\n      #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537\n      #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f)\n\n  Direct leak of 40 byte(s) in 1 object(s) allocated from:\n      #0 0x7f7343cba097 in calloc (/lib64/libasan.so.8+0xba097)\n      #1 0x987966 in zalloc (/home/acme/bin/perf+0x987966)\n      #2 0x52f9b9 in evsel_trace__new /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:307\n      #3 0x52f9b9 in evsel__syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:333\n      #4 0x52f9b9 in evsel__init_raw_syscall_tp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:458\n      #5 0x52f9b9 in perf_evsel__raw_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:480\n      #6 0x540dd1 in trace__add_syscall_newtp /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3205\n      #7 0x540dd1 in trace__run /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:3891\n      #8 0x540dd1 in cmd_trace /home/acme/git/perf-tools-next/tools/perf/builtin-trace.c:5156\n      #9 0x5ef262 in run_builtin /home/acme/git/perf-tools-next/tools/perf/perf.c:323\n      #10 0x4196da in handle_internal_command /home/acme/git/perf-tools-next/tools/perf/perf.c:377\n      #11 0x4196da in run_argv /home/acme/git/perf-tools-next/tools/perf/perf.c:421\n      #12 0x4196da in main /home/acme/git/perf-tools-next/tools/perf/perf.c:537\n      #13 0x7f7342c4a50f in __libc_start_call_main (/lib64/libc.so.6+0x2750f)\n\n  SUMMARY: AddressSanitizer: 80 byte(s) leaked in 2 allocation(s).\n  [root@quaco ~]#\n\nWith this we plug all leaks with \"perf trace sleep 1\"."
          }
        ],
        "id": "CVE-2023-53649",
        "lastModified": "2026-06-17T06:45:47.717",
        "metrics": {
          "cvssMetricV31": [
            {
              "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",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-10-07T16:15:48.380",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/27f396f64537b1ae48d0644d7cbf0d250b3c0b33"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/62dd514c34be63d3d5cae1f52a7e8b96c6dd6630"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7962ef13651a9163f07b530607392ea123482e8a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/c3bc668581e71e7c3bc7eb1d647f25f8db222163"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-401"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:27:45+00:00",
      "cve": "CVE-2023-53649",
      "id": "CVE-2023-53649",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "399",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "134",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: perf trace: Really free the evsel-\u003epriv area",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53649.json",
      "version": "3"
    }
  }
}



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