CVE-2025-68199 (GCVE-0-2025-68199)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:48 – Updated: 2026-05-11 21:48
VLAI
Title
codetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext
Summary
In the Linux kernel, the following vulnerability has been resolved: codetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext When alloc_slab_obj_exts() fails and then later succeeds in allocating a slab extension vector, it calls handle_failed_objexts_alloc() to mark all objects in the vector as empty. As a result all objects in this slab (slabA) will have their extensions set to CODETAG_EMPTY. Later on if this slabA is used to allocate a slabobj_ext vector for another slab (slabB), we end up with the slabB->obj_exts pointing to a slabobj_ext vector that itself has a non-NULL slabobj_ext equal to CODETAG_EMPTY. When slabB gets freed, free_slab_obj_exts() is called to free slabB->obj_exts vector. free_slab_obj_exts() calls mark_objexts_empty(slabB->obj_exts) which will generate a warning because it expects slabobj_ext vectors to have a NULL obj_ext, not CODETAG_EMPTY. Modify mark_objexts_empty() to skip the warning and setting the obj_ext value if it's already set to CODETAG_EMPTY. To quickly detect this WARN, I modified the code from WARN_ON(slab_exts[offs].ref.ct) to BUG_ON(slab_exts[offs].ref.ct == 1); We then obtained this message: [21630.898561] ------------[ cut here ]------------ [21630.898596] kernel BUG at mm/slub.c:2050! [21630.898611] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP [21630.900372] Modules linked in: squashfs isofs vfio_iommu_type1 vhost_vsock vfio vhost_net vmw_vsock_virtio_transport_common vhost tap vhost_iotlb iommufd vsock binfmt_misc nfsv3 nfs_acl nfs lockd grace netfs tls rds dns_resolver tun brd overlay ntfs3 exfat btrfs blake2b_generic xor xor_neon raid6_pq loop sctp ip6_udp_tunnel udp_tunnel nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables rfkill ip_set sunrpc vfat fat joydev sg sch_fq_codel nfnetlink virtio_gpu sr_mod cdrom drm_client_lib virtio_dma_buf drm_shmem_helper drm_kms_helper drm ghash_ce backlight virtio_net virtio_blk virtio_scsi net_failover virtio_console failover virtio_mmio dm_mirror dm_region_hash dm_log dm_multipath dm_mod fuse i2c_dev virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio virtio_ring autofs4 aes_neon_bs aes_ce_blk [last unloaded: hwpoison_inject] [21630.909177] CPU: 3 UID: 0 PID: 3787 Comm: kylin-process-m Kdump: loaded Tainted: G        W           6.18.0-rc1+ #74 PREEMPT(voluntary) [21630.910495] Tainted: [W]=WARN [21630.910867] Hardware name: QEMU KVM Virtual Machine, BIOS unknown 2/2/2022 [21630.911625] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [21630.912392] pc : __free_slab+0x228/0x250 [21630.912868] lr : __free_slab+0x18c/0x250[21630.913334] sp : ffff8000a02f73e0 [21630.913830] x29: ffff8000a02f73e0 x28: fffffdffc43fc800 x27: ffff0000c0011c40 [21630.914677] x26: ffff0000c000cac0 x25: ffff00010fe5e5f0 x24: ffff000102199b40 [21630.915469] x23: 0000000000000003 x22: 0000000000000003 x21: ffff0000c0011c40 [21630.916259] x20: fffffdffc4086600 x19: fffffdffc43fc800 x18: 0000000000000000 [21630.917048] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [21630.917837] x14: 0000000000000000 x13: 0000000000000000 x12: ffff70001405ee66 [21630.918640] x11: 1ffff0001405ee65 x10: ffff70001405ee65 x9 : ffff800080a295dc [21630.919442] x8 : ffff8000a02f7330 x7 : 0000000000000000 x6 : 0000000000003000 [21630.920232] x5 : 0000000024924925 x4 : 0000000000000001 x3 : 0000000000000007 [21630.921021] x2 : 0000000000001b40 x1 : 000000000000001f x0 : 0000000000000001 [21630.921810] Call trace: [21630.922130]  __free_slab+0x228/0x250 (P) [21630.922669]  free_slab+0x38/0x118 [21630.923079]  free_to_partial_list+0x1d4/0x340 [21630.923591]  __slab_free+0x24c/0x348 [21630.924024]  ___cache_free+0xf0/0x110 [21630.924468]  qlist_free_all+0x78/0x130 [21630.924922]  kasan_quarantine_reduce+0x11 ---truncated---
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 09c46563ff6d5f090211e48ff1fdba0ec7f4c97f , < fc6acd4cddf76e7eb7db63649fe36980ce208f56 (git)
Affected: 09c46563ff6d5f090211e48ff1fdba0ec7f4c97f , < 3f56c407feb967e6faeb4e2e04eaa8edc206a686 (git)
Affected: 09c46563ff6d5f090211e48ff1fdba0ec7f4c97f , < 1abbdf3d57aa964e572940d67c9ec5dc87710738 (git)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.59 , ≤ 6.12.* (semver)
Unaffected: 6.17.9 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/slub.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fc6acd4cddf76e7eb7db63649fe36980ce208f56",
              "status": "affected",
              "version": "09c46563ff6d5f090211e48ff1fdba0ec7f4c97f",
              "versionType": "git"
            },
            {
              "lessThan": "3f56c407feb967e6faeb4e2e04eaa8edc206a686",
              "status": "affected",
              "version": "09c46563ff6d5f090211e48ff1fdba0ec7f4c97f",
              "versionType": "git"
            },
            {
              "lessThan": "1abbdf3d57aa964e572940d67c9ec5dc87710738",
              "status": "affected",
              "version": "09c46563ff6d5f090211e48ff1fdba0ec7f4c97f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/slub.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.59",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.59",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.9",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncodetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext\n\nWhen alloc_slab_obj_exts() fails and then later succeeds in allocating a\nslab extension vector, it calls handle_failed_objexts_alloc() to mark all\nobjects in the vector as empty.  As a result all objects in this slab\n(slabA) will have their extensions set to CODETAG_EMPTY.\n\nLater on if this slabA is used to allocate a slabobj_ext vector for\nanother slab (slabB), we end up with the slabB-\u003eobj_exts pointing to a\nslabobj_ext vector that itself has a non-NULL slabobj_ext equal to\nCODETAG_EMPTY.  When slabB gets freed, free_slab_obj_exts() is called to\nfree slabB-\u003eobj_exts vector.  \n\nfree_slab_obj_exts() calls mark_objexts_empty(slabB-\u003eobj_exts) which will\ngenerate a warning because it expects slabobj_ext vectors to have a NULL\nobj_ext, not CODETAG_EMPTY.\n\nModify mark_objexts_empty() to skip the warning and setting the obj_ext\nvalue if it\u0027s already set to CODETAG_EMPTY.\n\n\nTo quickly detect this WARN, I modified the code from\nWARN_ON(slab_exts[offs].ref.ct) to BUG_ON(slab_exts[offs].ref.ct == 1);\n\nWe then obtained this message:\n\n[21630.898561] ------------[ cut here ]------------\n[21630.898596] kernel BUG at mm/slub.c:2050!\n[21630.898611] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP\n[21630.900372] Modules linked in: squashfs isofs vfio_iommu_type1 \nvhost_vsock vfio vhost_net vmw_vsock_virtio_transport_common vhost tap \nvhost_iotlb iommufd vsock binfmt_misc nfsv3 nfs_acl nfs lockd grace \nnetfs tls rds dns_resolver tun brd overlay ntfs3 exfat btrfs \nblake2b_generic xor xor_neon raid6_pq loop sctp ip6_udp_tunnel \nudp_tunnel nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib \nnft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct \nnft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 \nnf_tables rfkill ip_set sunrpc vfat fat joydev sg sch_fq_codel nfnetlink \nvirtio_gpu sr_mod cdrom drm_client_lib virtio_dma_buf drm_shmem_helper \ndrm_kms_helper drm ghash_ce backlight virtio_net virtio_blk virtio_scsi \nnet_failover virtio_console failover virtio_mmio dm_mirror \ndm_region_hash dm_log dm_multipath dm_mod fuse i2c_dev virtio_pci \nvirtio_pci_legacy_dev virtio_pci_modern_dev virtio virtio_ring autofs4 \naes_neon_bs aes_ce_blk [last unloaded: hwpoison_inject]\n[21630.909177] CPU: 3 UID: 0 PID: 3787 Comm: kylin-process-m Kdump: \nloaded Tainted: G\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 W\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 6.18.0-rc1+ #74 PREEMPT(voluntary)\n[21630.910495] Tainted: [W]=WARN\n[21630.910867] Hardware name: QEMU KVM Virtual Machine, BIOS unknown \n2/2/2022\n[21630.911625] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS \nBTYPE=--)\n[21630.912392] pc : __free_slab+0x228/0x250\n[21630.912868] lr : __free_slab+0x18c/0x250[21630.913334] sp : \nffff8000a02f73e0\n[21630.913830] x29: ffff8000a02f73e0 x28: fffffdffc43fc800 x27: \nffff0000c0011c40\n[21630.914677] x26: ffff0000c000cac0 x25: ffff00010fe5e5f0 x24: \nffff000102199b40\n[21630.915469] x23: 0000000000000003 x22: 0000000000000003 x21: \nffff0000c0011c40\n[21630.916259] x20: fffffdffc4086600 x19: fffffdffc43fc800 x18: \n0000000000000000\n[21630.917048] x17: 0000000000000000 x16: 0000000000000000 x15: \n0000000000000000\n[21630.917837] x14: 0000000000000000 x13: 0000000000000000 x12: \nffff70001405ee66\n[21630.918640] x11: 1ffff0001405ee65 x10: ffff70001405ee65 x9 : \nffff800080a295dc\n[21630.919442] x8 : ffff8000a02f7330 x7 : 0000000000000000 x6 : \n0000000000003000\n[21630.920232] x5 : 0000000024924925 x4 : 0000000000000001 x3 : \n0000000000000007\n[21630.921021] x2 : 0000000000001b40 x1 : 000000000000001f x0 : \n0000000000000001\n[21630.921810] Call trace:\n[21630.922130]\u00a0 __free_slab+0x228/0x250 (P)\n[21630.922669]\u00a0 free_slab+0x38/0x118\n[21630.923079]\u00a0 free_to_partial_list+0x1d4/0x340\n[21630.923591]\u00a0 __slab_free+0x24c/0x348\n[21630.924024]\u00a0 ___cache_free+0xf0/0x110\n[21630.924468]\u00a0 qlist_free_all+0x78/0x130\n[21630.924922]\u00a0 kasan_quarantine_reduce+0x11\n---truncated---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:48:34.800Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fc6acd4cddf76e7eb7db63649fe36980ce208f56"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f56c407feb967e6faeb4e2e04eaa8edc206a686"
        },
        {
          "url": "https://git.kernel.org/stable/c/1abbdf3d57aa964e572940d67c9ec5dc87710738"
        }
      ],
      "title": "codetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68199",
    "datePublished": "2025-12-16T13:48:27.813Z",
    "dateReserved": "2025-12-16T13:41:40.254Z",
    "dateUpdated": "2026-05-11T21:48:34.800Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-68199",
      "date": "2026-09-28",
      "epss": "0.00197",
      "percentile": "0.08449"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "mm/slub.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "fc6acd4cddf76e7eb7db63649fe36980ce208f56",
                    "status": "affected",
                    "version": "09c46563ff6d5f090211e48ff1fdba0ec7f4c97f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3f56c407feb967e6faeb4e2e04eaa8edc206a686",
                    "status": "affected",
                    "version": "09c46563ff6d5f090211e48ff1fdba0ec7f4c97f",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "1abbdf3d57aa964e572940d67c9ec5dc87710738",
                    "status": "affected",
                    "version": "09c46563ff6d5f090211e48ff1fdba0ec7f4c97f",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "mm/slub.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "6.10"
                  },
                  {
                    "lessThan": "6.10",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.59",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.17.*",
                    "status": "unaffected",
                    "version": "6.17.9",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.18",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncodetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext\n\nWhen alloc_slab_obj_exts() fails and then later succeeds in allocating a\nslab extension vector, it calls handle_failed_objexts_alloc() to mark all\nobjects in the vector as empty.  As a result all objects in this slab\n(slabA) will have their extensions set to CODETAG_EMPTY.\n\nLater on if this slabA is used to allocate a slabobj_ext vector for\nanother slab (slabB), we end up with the slabB-\u003eobj_exts pointing to a\nslabobj_ext vector that itself has a non-NULL slabobj_ext equal to\nCODETAG_EMPTY.  When slabB gets freed, free_slab_obj_exts() is called to\nfree slabB-\u003eobj_exts vector.  \n\nfree_slab_obj_exts() calls mark_objexts_empty(slabB-\u003eobj_exts) which will\ngenerate a warning because it expects slabobj_ext vectors to have a NULL\nobj_ext, not CODETAG_EMPTY.\n\nModify mark_objexts_empty() to skip the warning and setting the obj_ext\nvalue if it\u0027s already set to CODETAG_EMPTY.\n\n\nTo quickly detect this WARN, I modified the code from\nWARN_ON(slab_exts[offs].ref.ct) to BUG_ON(slab_exts[offs].ref.ct == 1);\n\nWe then obtained this message:\n\n[21630.898561] ------------[ cut here ]------------\n[21630.898596] kernel BUG at mm/slub.c:2050!\n[21630.898611] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP\n[21630.900372] Modules linked in: squashfs isofs vfio_iommu_type1 \nvhost_vsock vfio vhost_net vmw_vsock_virtio_transport_common vhost tap \nvhost_iotlb iommufd vsock binfmt_misc nfsv3 nfs_acl nfs lockd grace \nnetfs tls rds dns_resolver tun brd overlay ntfs3 exfat btrfs \nblake2b_generic xor xor_neon raid6_pq loop sctp ip6_udp_tunnel \nudp_tunnel nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib \nnft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct \nnft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 \nnf_tables rfkill ip_set sunrpc vfat fat joydev sg sch_fq_codel nfnetlink \nvirtio_gpu sr_mod cdrom drm_client_lib virtio_dma_buf drm_shmem_helper \ndrm_kms_helper drm ghash_ce backlight virtio_net virtio_blk virtio_scsi \nnet_failover virtio_console failover virtio_mmio dm_mirror \ndm_region_hash dm_log dm_multipath dm_mod fuse i2c_dev virtio_pci \nvirtio_pci_legacy_dev virtio_pci_modern_dev virtio virtio_ring autofs4 \naes_neon_bs aes_ce_blk [last unloaded: hwpoison_inject]\n[21630.909177] CPU: 3 UID: 0 PID: 3787 Comm: kylin-process-m Kdump: \nloaded Tainted: G\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 W\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 6.18.0-rc1+ #74 PREEMPT(voluntary)\n[21630.910495] Tainted: [W]=WARN\n[21630.910867] Hardware name: QEMU KVM Virtual Machine, BIOS unknown \n2/2/2022\n[21630.911625] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS \nBTYPE=--)\n[21630.912392] pc : __free_slab+0x228/0x250\n[21630.912868] lr : __free_slab+0x18c/0x250[21630.913334] sp : \nffff8000a02f73e0\n[21630.913830] x29: ffff8000a02f73e0 x28: fffffdffc43fc800 x27: \nffff0000c0011c40\n[21630.914677] x26: ffff0000c000cac0 x25: ffff00010fe5e5f0 x24: \nffff000102199b40\n[21630.915469] x23: 0000000000000003 x22: 0000000000000003 x21: \nffff0000c0011c40\n[21630.916259] x20: fffffdffc4086600 x19: fffffdffc43fc800 x18: \n0000000000000000\n[21630.917048] x17: 0000000000000000 x16: 0000000000000000 x15: \n0000000000000000\n[21630.917837] x14: 0000000000000000 x13: 0000000000000000 x12: \nffff70001405ee66\n[21630.918640] x11: 1ffff0001405ee65 x10: ffff70001405ee65 x9 : \nffff800080a295dc\n[21630.919442] x8 : ffff8000a02f7330 x7 : 0000000000000000 x6 : \n0000000000003000\n[21630.920232] x5 : 0000000024924925 x4 : 0000000000000001 x3 : \n0000000000000007\n[21630.921021] x2 : 0000000000001b40 x1 : 000000000000001f x0 : \n0000000000000001\n[21630.921810] Call trace:\n[21630.922130]\u00a0 __free_slab+0x228/0x250 (P)\n[21630.922669]\u00a0 free_slab+0x38/0x118\n[21630.923079]\u00a0 free_to_partial_list+0x1d4/0x340\n[21630.923591]\u00a0 __slab_free+0x24c/0x348\n[21630.924024]\u00a0 ___cache_free+0xf0/0x110\n[21630.924468]\u00a0 qlist_free_all+0x78/0x130\n[21630.924922]\u00a0 kasan_quarantine_reduce+0x11\n---truncated---"
          }
        ],
        "id": "CVE-2025-68199",
        "lastModified": "2026-06-17T09:58:43.453",
        "metrics": {},
        "published": "2025-12-16T14:15:52.707",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1abbdf3d57aa964e572940d67c9ec5dc87710738"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3f56c407feb967e6faeb4e2e04eaa8edc206a686"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fc6acd4cddf76e7eb7db63649fe36980ce208f56"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:39:12+00:00",
      "cve": "CVE-2025-68199",
      "id": "CVE-2025-68199",
      "initial_release_date": "2025-12-16T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: codetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68199.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:11:40Z",
      "cve": "CVE-2025-68199",
      "id": "CVE-2025-68199",
      "initial_release_date": "2025-12-17T00:25:40Z",
      "product_status:known_affected": "17",
      "product_status:known_not_affected": "538",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-68199",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68199.json",
      "version": "16"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.