CWE-415

{
  "affected": [],
  "aliases": [
    "CVE-2025-31235"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-12T22:15:23Z",
    "severity": "MODERATE"
  },
  "details": "A double free issue was addressed with improved memory management. This issue is fixed in iPadOS 17.7.7, macOS Ventura 13.7.6, macOS Sequoia 15.5, macOS Sonoma 14.7.6. An app may be able to cause unexpected system termination.",
  "id": "GHSA-xh5p-rm5r-7f82",
  "modified": "2025-11-03T21:33:53Z",
  "published": "2025-05-13T00:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-31235"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/122405"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/122716"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/122717"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/122718"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2025/May/6"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2025/May/7"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2025/May/8"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2025/May/9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-64222"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-24T16:16:50Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: avoid double free of pool-\u003estack on AQ init failure\n\notx2_pool_aq_init() frees pool-\u003estack when mailbox sync or retry\nallocation fails, but leaves the pointer unchanged. Later,\notx2_sq_aura_pool_init() unwinds the partial setup through\notx2_aura_pool_free(), which frees pool-\u003estack again. The CN20K-specific\ncn20k_pool_aq_init() implementation has the same bug in\nits corresponding error path.\n\nSet pool-\u003estack to NULL immediately after the local free so the shared\ncleanup path does not free the same stack again while cleaning up\npartially initialized pool state.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still present in\nv7.1-rc3.\n\nRuntime validation was not performed because reproducing this path\nrequires OcteonTX2/CN20K hardware.",
  "id": "GHSA-xhjp-r5qg-3389",
  "modified": "2026-07-27T06:30:30Z",
  "published": "2026-07-24T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64222"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0488a0bb344fb1992853b60082acff6be8164d74"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d9b9d7dbef976ae7f855b6358f1d703014e96ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c29603498b05c049dbbbc47e882f2fbf0193cd7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94192b0579333c3deee2441379aab8ca98fc2e6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b244c242bec48b37e82b89787afd6a4c43457e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b92e7ea408b6f1144648909c9c49a55d245d7300"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c4b8c5d51632538b19ee01cf6d70cbceeefbd3ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6e9bc0bf963662b7042048ab0281014625d4cb4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2015-1207"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-06-06T18:29:00Z",
    "severity": "MODERATE"
  },
  "details": "Double-free vulnerability in libavformat/mov.c in FFMPEG in Google Chrome 41.0.2251.0 allows remote attackers to cause a denial of service (memory corruption and crash) via a crafted .m4a file.",
  "id": "GHSA-xhm7-3cgh-g3g7",
  "modified": "2022-05-14T01:29:12Z",
  "published": "2022-05-14T01:29:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-1207"
    },
    {
      "type": "WEB",
      "url": "https://bugs.chromium.org/p/chromium/issues/detail?id=444539"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/bittorrent3389/8fee7cdaa73d1d351ee9"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2019/02/msg00005.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-31471"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T14:16:43Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: only publish mode_data after clone setup\n\niptfs_clone_state() stores x-\u003emode_data before allocating the reorder\nwindow. If that allocation fails, the code frees the cloned state and\nreturns -ENOMEM, leaving x-\u003emode_data pointing at freed memory.\n\nThe xfrm clone unwind later runs destroy_state() through x-\u003emode_data,\nso the failed clone path tears down IPTFS state that clone_state()\nalready freed.\n\nKeep the cloned IPTFS state private until all allocations succeed so\nfailed clones leave x-\u003emode_data unset. The destroy path already\nhandles a NULL mode_data pointer.",
  "id": "GHSA-xjfc-f2rj-h2hm",
  "modified": "2026-04-27T15:30:38Z",
  "published": "2026-04-22T15:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31471"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/371a43c4ac70cac0de9f9b1fc5b1660b9565b9f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5784a1e2889c9525a8f036cb586930e232170bf7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d849a2f7309fc0616e79d13b008b0a47e0458b6e"
    }
  ],
  "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"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2021-40571"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-13T18:15:00Z",
    "severity": "HIGH"
  },
  "details": "The binary MP4Box in Gpac 1.0.1 has a double-free vulnerability in the ilst_box_read function in box_code_apple.c, which allows attackers to cause a denial of service, even code execution and escalation of privileges.",
  "id": "GHSA-xjv4-5hjm-mw83",
  "modified": "2023-05-27T06:30:38Z",
  "published": "2022-01-14T00:02:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40571"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gpac/gpac/issues/1895"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gpac/gpac/commit/a69b567b8c95c72f9560c873c5ab348be058f340"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2023/dsa-5411"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2020-0483"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-15T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In DrmManagerService::~DrmManagerService() of DrmManagerService.cpp, there is a possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-155647761",
  "id": "GHSA-xm3x-2cx4-fh5j",
  "modified": "2022-05-24T17:36:26Z",
  "published": "2022-05-24T17:36:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-0483"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/pixel/2020-12-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "affected": [],
  "aliases": [
    "CVE-2025-37991"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-20T18:15:45Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: Fix double SIGFPE crash\n\nCamm noticed that on parisc a SIGFPE exception will crash an application with\na second SIGFPE in the signal handler.  Dave analyzed it, and it happens\nbecause glibc uses a double-word floating-point store to atomically update\nfunction descriptors. As a result of lazy binding, we hit a floating-point\nstore in fpe_func almost immediately.\n\nWhen the T bit is set, an assist exception trap occurs when when the\nco-processor encounters *any* floating-point instruction except for a double\nstore of register %fr0.  The latter cancels all pending traps.  Let\u0027s fix this\nby clearing the Trap (T) bit in the FP status register before returning to the\nsignal handler in userspace.\n\nThe issue can be reproduced with this test program:\n\nroot@parisc:~# cat fpe.c\n\nstatic void fpe_func(int sig, siginfo_t *i, void *v) {\n        sigset_t set;\n        sigemptyset(\u0026set);\n        sigaddset(\u0026set, SIGFPE);\n        sigprocmask(SIG_UNBLOCK, \u0026set, NULL);\n        printf(\"GOT signal %d with si_code %ld\\n\", sig, i-\u003esi_code);\n}\n\nint main() {\n        struct sigaction action = {\n                .sa_sigaction = fpe_func,\n                .sa_flags = SA_RESTART|SA_SIGINFO };\n        sigaction(SIGFPE, \u0026action, 0);\n        feenableexcept(FE_OVERFLOW);\n        return printf(\"%lf\\n\",1.7976931348623158E308*1.7976931348623158E308);\n}\n\nroot@parisc:~# gcc fpe.c -lm\nroot@parisc:~# ./a.out\n Floating point exception\n\nroot@parisc:~# strace -f ./a.out\n execve(\"./a.out\", [\"./a.out\"], 0xf9ac7034 /* 20 vars */) = 0\n getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0\n ...\n rt_sigaction(SIGFPE, {sa_handler=0x1110a, sa_mask=[], sa_flags=SA_RESTART|SA_SIGINFO}, NULL, 8) = 0\n --- SIGFPE {si_signo=SIGFPE, si_code=FPE_FLTOVF, si_addr=0x1078f} ---\n --- SIGFPE {si_signo=SIGFPE, si_code=FPE_FLTOVF, si_addr=0xf8f21237} ---\n +++ killed by SIGFPE +++\n Floating point exception",
  "id": "GHSA-xp2h-p3fr-j2j5",
  "modified": "2025-12-16T21:30:49Z",
  "published": "2025-05-20T18:30:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37991"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a1aff3616b3b57aa4a5f8a7762cce1e82493fe6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a098c51d18ec99485668da44294565c43dbc106"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6c639af49e9e5615a8395981eaf5943fb40acd6f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/757ba4d17b868482837c566cfefca59e2296c608"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf21e890f56b7d0038ddaf25224e4f4c69ecd143"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/de3629baf5a33af1919dec7136d643b0662e85ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df3592e493d7f29bae4ffde9a9325de50ddf962e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec4584495868bd465fe60a3f771915c0e7ce7951"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html"
    }
  ],
  "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"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-21530"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-12T18:16:38Z",
    "severity": "MODERATE"
  },
  "details": "Double free in Windows Rich Text Edit allows an authorized attacker to elevate privileges locally.",
  "id": "GHSA-xp4f-mw6j-jxm8",
  "modified": "2026-05-12T18:30:40Z",
  "published": "2026-05-12T18:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21530"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21530"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [],
  "aliases": [
    "CVE-2024-12107"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-04T11:15:05Z",
    "severity": "HIGH"
  },
  "details": "Double-Free Vulnerability in uD3TN BPv7 Caused by Malformed Endpoint Identifier allows remote attacker to reliably cause DoS",
  "id": "GHSA-xp4h-q65r-x2pm",
  "modified": "2024-12-04T12:31:45Z",
  "published": "2024-12-04T12:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-12107"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/d3tn/ud3tn/-/issues/233"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "thin-vec"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-6654"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415",
      "CWE-416"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-15T19:24:54Z",
    "nvd_published_at": "2026-04-20T11:16:19Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\nA **Double Free / Use-After-Free (UAF)** vulnerability has been identified in the `IntoIter::drop` and `ThinVec::clear` implementations of the `thin_vec` crate.\nBoth vulnerabilities share the same root cause and can trigger memory corruption using only safe Rust code \u2014 no `unsafe` blocks required.\nUndefined Behavior has been confirmed via **Miri** and **AddressSanitizer (ASAN)**.\n\n---\n\n### Details\n\nBoth vulnerabilities share the same root cause. When a **panic occurs** during sequential element deallocation, the subsequent length cleanup code (`set_len(0)`) is never executed. During stack unwinding, the container is dropped again, causing already-freed memory to be re-freed (Double Free / UAF).\n\n#### Vulnerability 1 \u2014 `IntoIter::drop`\n\n**Location:** `thin-vec/src/lib.rs` L.2308~2314\n\n`IntoIter::drop` transfers ownership of the internal buffer via `mem::replace`, then sequentially frees elements via `ptr::drop_in_place`.\nIf a panic occurs during element deallocation, `set_len_non_singleton(0)` is never reached. During unwinding, `vec` is dropped again, re-freeing already-freed elements.\nThe standard library\u0027s `std::vec::IntoIter` prevents this with a **DropGuard pattern**, but thin-vec lacks this defense.\n\n```rust\n// Problematic structure (conceptual representation)\nimpl\u003cT\u003e Drop for IntoIter\u003cT\u003e {\n    fn drop(\u0026mut self) {\n        let mut vec = mem::replace(\u0026mut self.vec, ThinVec::new());\n        unsafe {\n            ptr::drop_in_place(vec.remaining_slice_mut()); // \u2190 panic may occur here\n            vec.set_len_non_singleton(0);                  // \u2190 unreachable on panic\n        }\n        // During unwinding, vec is dropped again \u2192 Double Free\n    }\n}\n```\n\n#### Vulnerability 2 \u2014 `ThinVec::clear`\n\n`clear()` calls `ptr::drop_in_place(\u0026mut self[..])` followed by `self.set_len(0)` to reset the length.\nIf a panic occurs during element deallocation, `set_len(0)` is never executed. When the `ThinVec` itself is subsequently dropped, already-freed elements are freed again.\n\n```rust\n// Problematic structure (conceptual representation)\npub fn clear(\u0026mut self) {\n    unsafe {\n        ptr::drop_in_place(\u0026mut self[..]); // \u2190 panic may occur here\n        self.set_len(0);                   // \u2190 unreachable on panic\n    }\n    // ThinVec drop later \u2192 Double Free\n}\n```\n\n#### Recommended Fix\n\nBoth vulnerabilities can be resolved with the same pattern:\n\n- **DropGuard pattern:** Insert an RAII guard before `drop_in_place` to guarantee `set_len(0)` is called regardless of panic\n- **Pre-zeroing approach:** Set the length to 0 before calling `drop_in_place`\n\n---\n\n### PoC\n\n**Requirements:** Rust nightly toolchain, `thin-vec = \"0.2.14\"`\n\n```bash\n# Miri\ncargo +nightly miri run\n\n# ASAN\nRUSTFLAGS=\"-Z sanitizer=address\" cargo +nightly run --release\n```\n\n#### PoC-1: `IntoIter::drop`\n\n```rust\nuse thin_vec::ThinVec;\n\nstruct PanicBomb(String);\n\nimpl Drop for PanicBomb {\n    fn drop(\u0026mut self) {\n        if self.0 == \"panic\" {\n            panic!(\"panic!\");\n        }\n        println!(\"Dropping: {}\", self.0);\n    }\n}\n\nfn main() {\n    let mut v = ThinVec::new();\n    v.push(PanicBomb(String::from(\"normal1\")));\n    v.push(PanicBomb(String::from(\"panic\")));  // trigger element\n    v.push(PanicBomb(String::from(\"normal2\")));\n\n    let mut iter = v.into_iter();\n    iter.next();\n    // When iter is dropped: panic occurs at \"panic\" element\n    // \u2192 During unwinding, Double Drop is triggered on \"normal1\" (already freed)\n}\n```\n\n**Miri output:**\n```\nerror: Undefined Behavior: pointer not dereferenceable:\n       alloc227 has been freed, so this pointer is dangling\n\nstack backtrace:\n   3: \u003cPanicBomb as Drop\u003e::drop           \u2190 Double Drop entry\n   6: \u003cThinVec\u003cT\u003e as Drop\u003e::drop::drop_non_singleton\n   9: \u003cIntoIter\u003cT\u003e as Drop\u003e::drop::drop_non_singleton  \u2190 lib.rs:2310 (root cause)\n```\n\n**ASAN output:**\n```\n==66150==ERROR: AddressSanitizer: heap-use-after-free on address 0x7afa685e0010\nREAD of size 7 at 0x7afa685e0010\n    #0 memcpy\n    #4 drop_in_place::\u003cPanicBomb\u003e        \u2190 Double Drop entry point\n    #5 \u003cThinVec as Drop\u003e::drop::drop_non_singleton\n    #6 \u003cIntoIter as Drop\u003e::drop::drop_non_singleton\n```\n\n#### PoC-2: `ThinVec::clear`\n\n```rust\nuse thin_vec::ThinVec;\nuse std::panic;\n\nstruct Poison(Box\u003cusize\u003e, \u0026\u0027static str);\n\nimpl Drop for Poison {\n    fn drop(\u0026mut self) {\n        if self.1 == \"panic\" {\n            panic!(\"panic!\");\n        }\n        println!(\"Dropping: {}\", self.0);\n    }\n}\n\nfn main() {\n    let mut v = ThinVec::new();\n    v.push(Poison(Box::new(1), \"normal1\")); // index 0\n    v.push(Poison(Box::new(2), \"panic\"));   // index 1 \u2192 panic triggered here\n    v.push(Poison(Box::new(3), \"normal2\")); // index 2\n\n    let _ = panic::catch_unwind(panic::AssertUnwindSafe(|| {\n        v.clear();\n        // panic occurs at \"panic\" element during clear()\n        // \u2192 set_len(0) is never called\n        // \u2192 already-freed elements are re-freed when v goes out of scope\n    }));\n}\n```\n\n---\n\n### Impact\n\n**Vulnerability classification:**\n- CWE-415: Double Free\n- CWE-416: Use-After-Free\n\n**Affected code:** All code satisfying the following conditions simultaneously:\n\n1. `ThinVec` stores heap-owning types (`String`, `Vec`, `Box`, etc.)\n2. (Vulnerability 1) An iterator is created via `into_iter()` and dropped before being fully consumed, or\n   (Vulnerability 2) `clear()` is called while a remaining element\u0027s `Drop` implementation can panic\n3. The `Drop` implementation of a remaining element triggers a panic\n\nAdditionally, when combined with `Box\u003cdyn Trait\u003e` types, an exploit primitive enabling Arbitrary Code Execution (ACE) via heap spray and vtable hijacking has been confirmed. If the freed fat pointer slot (16 bytes) at the point of Double Drop is reclaimed by an attacker-controlled fake vtable, subsequent Drop calls can be redirected to attacker-controlled code.",
  "id": "GHSA-xphw-cqx3-667j",
  "modified": "2026-05-05T15:43:14Z",
  "published": "2026-04-15T19:24:54Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mozilla/thin-vec/security/advisories/GHSA-xphw-cqx3-667j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6654"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mozilla/thin-vec"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0103.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "thin-vec: Use-After-Free and Double Free in IntoIter::drop When Element Drop Panics"
}