CWE-416

Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

CVE-2023-1192 (GCVE-0-2023-1192)

Vulnerability from cvelistv5 – Published: 2023-11-01 19:01 – Updated: 2025-02-27 20:36
VLAI
Title
Use-after-free in smb2_is_status_io_timeout()
Summary
A use-after-free flaw was found in smb2_is_status_io_timeout() in CIFS in the Linux Kernel. After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Date Public
2022-10-02 00:00
Credits
Red Hat would like to thank Pumpkin (@u1f383), working with DEVCORE Internship Program for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2023-1193 (GCVE-0-2023-1193)

Vulnerability from cvelistv5 – Published: 2023-11-01 19:10 – Updated: 2025-02-27 20:36
VLAI
Title
Use-after-free in setup_async_work()
Summary
A use-after-free flaw was found in setup_async_work in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. This issue could allow an attacker to crash the system by accessing freed work.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Date Public
2022-10-02 00:00
Credits
Red Hat would like to thank Pumpkin (@u1f383), working with DEVCORE Internship Program for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2023-1194 (GCVE-0-2023-1194)

Vulnerability from cvelistv5 – Published: 2023-11-03 07:41 – Updated: 2025-02-13 16:39
VLAI
Title
Use-after-free in parse_lease_state()
Summary
An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
CWE
Assigner
References
Impacted products
Date Public
2022-10-02 00:00
Credits
Red Hat would like to thank Pumpkin (@u1f383) (DEVCORE Internship Program, and NYCU Software Security LAB) for reporting this issue.
Show details on NVD website
To clipboard 

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CVE-2023-1195 (GCVE-0-2023-1195)

Vulnerability from cvelistv5 – Published: 2023-05-18 00:00 – Updated: 2025-03-18 18:38
VLAI
Summary
A use-after-free flaw was found in reconn_set_ipaddr_from_hostname in fs/cifs/connect.c in the Linux kernel. The issue occurs when it forgets to set the free pointer server->hostname to NULL, leading to an invalid pointer request.
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 (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kernel Affected: prior to kernel 6.1 rc3
Show details on NVD website
To clipboard 

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CVE-2023-1249 (GCVE-0-2023-1249)

Vulnerability from cvelistv5 – Published: 2023-03-23 00:00 – Updated: 2025-03-19 15:45
VLAI
Summary
A use-after-free flaw was found in the Linux kernel’s core dump subsystem. This flaw allows a local user to crash the system. Only if patch 390031c94211 ("coredump: Use the vma snapshot in fill_files_note") not applied yet, then kernel could be affected.
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 (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux kernel 5.18-rc1
Show details on NVD website
To clipboard 

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CVE-2023-1252 (GCVE-0-2023-1252)

Vulnerability from cvelistv5 – Published: 2023-03-23 00:00 – Updated: 2025-04-23 16:23
VLAI
Summary
A use-after-free flaw was found in the Linux kernel’s Ext4 File System in how a user triggers several file operations simultaneously with the overlay FS usage. This flaw allows a local user to crash or potentially escalate their privileges on the system. Only if patch 9a2544037600 ("ovl: fix use after free in struct ovl_aio_req") not applied yet, the kernel could be affected.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux kernel 5.16-rc1
Show details on NVD website
To clipboard 

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CVE-2023-1281 (GCVE-0-2023-1281)

Vulnerability from cvelistv5 – Published: 2023-03-22 13:18 – Updated: 2025-03-05 19:22
VLAI
Title
UAF in Linux kernel's tcindex (traffic control index filter) implementation
Summary
Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Kernel Affected: 4.14 , ≤ 6.2 (custom)
Create a notification for this product.
Date Public
2023-02-09 15:37
Credits
valis
Show details on NVD website
To clipboard 

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CVE-2023-1393 (GCVE-0-2023-1393)

Vulnerability from cvelistv5 – Published: 2023-03-30 00:00 – Updated: 2026-01-22 04:55
VLAI
Summary
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a xorg-server Affected: xorg-server 21.1.8
Show details on NVD website
To clipboard 

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CVE-2023-1476 (GCVE-0-2023-1476)

Vulnerability from cvelistv5 – Published: 2023-11-03 08:07 – Updated: 2025-02-27 20:34
VLAI
Title
Kpatch: mm/mremap.c: incomplete fix for cve-2022-41222
Summary
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8::baseos
 Create a notification for this product.
Date Public
2023-03-07 00:00
Show details on NVD website
To clipboard 

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CVE-2023-1611 (GCVE-0-2023-1611)

Vulnerability from cvelistv5 – Published: 2023-04-03 00:00 – Updated: 2025-02-13 14:57
VLAI
Summary
A use-after-free flaw was found in btrfs_search_slot in fs/btrfs/ctree.c in btrfs in the Linux Kernel.This flaw allows an attacker to crash the system and possibly cause a kernel information lea
Severity
6.3 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kernel Affected: unknown
Show details on NVD website
To clipboard 

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            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5QCM6XO4HSPLGR3DFYWFRIA3GCBIHZR4/"
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          {
            "name": "[debian-lts-announce] 20230502 [SECURITY] [DLA 3404-1] linux-5.10 security update",
            "tags": [
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            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html"
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            "url": "https://github.com/torvalds/linux/commit/2f1a6be12ab6c8470d5776e68644726c94257c54"
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        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 6.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-1611",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-13T14:57:33.584470Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-13T14:57:52.797Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "unknown"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A use-after-free flaw was found in btrfs_search_slot in fs/btrfs/ctree.c in btrfs in the Linux Kernel.This flaw allows an attacker to crash the system and possibly cause a kernel information lea"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "CWE-416",
              "lang": "en",
              "type": "CWE"
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      ],
      "providerMetadata": {
        "dateUpdated": "2023-07-23T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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      "references": [
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2181342"
        },
        {
          "url": "https://lore.kernel.org/linux-btrfs/35b9a70650ea947387cf352914a8774b4f7e8a6f.1679481128.git.fdmanana%40suse.com/"
        },
        {
          "name": "FEDORA-2023-98251cef79",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWECAZ7V7EPSXMINO6Q6KWNKDY2CO6ZW/"
        },
        {
          "name": "FEDORA-2023-d525cf5272",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5QCM6XO4HSPLGR3DFYWFRIA3GCBIHZR4/"
        },
        {
          "name": "[debian-lts-announce] 20230502 [SECURITY] [DLA 3404-1] linux-5.10 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html"
        },
        {
          "url": "https://github.com/torvalds/linux/commit/2f1a6be12ab6c8470d5776e68644726c94257c54"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2023-1611",
    "datePublished": "2023-04-03T00:00:00.000Z",
    "dateReserved": "2023-03-23T00:00:00.000Z",
    "dateUpdated": "2025-02-13T14:57:52.797Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}
Mitigation

Phase: Architecture and Design

Strategy: Language Selection

Description:

  • Choose a language that provides automatic memory management.
Mitigation

Phase: Implementation

Strategy: Attack Surface Reduction

Description:

  • When freeing pointers, be sure to set them to NULL once they are freed. However, the utilization of multiple or complex data structures may lower the usefulness of this strategy.

No CAPEC attack patterns related to this CWE.

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