Vulnerability-Lookup

FKIE_CVE-2026-68156

Vulnerability from fkie_nvd - Published: 2026-08-10 13:20 - Updated: 2026-08-19 17:20

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: libceph: refresh auth->authorizer_buf{,_len} after authorizer update ceph_x_create_authorizer() caches au->buf->vec.iov_base and au->buf->vec.iov_len in struct ceph_auth_handshake. These cached values are then used by the messenger connect code when sending the authorizer. ceph_x_update_authorizer() can rebuild the authorizer when a newer service ticket is available. If the rebuilt authorizer no longer fits in the existing buffer, ceph_x_build_authorizer() drops its reference to au->buf and allocates a new one. If this is the final reference, ceph_buffer_put() frees the old ceph_buffer and its vec.iov_base, but auth->authorizer_buf still points at that freed memory. A subsequent msgr1 reconnect can therefore queue the stale pointer and trigger a KASAN slab-use-after-free in _copy_from_iter() while tcp_sendmsg() copies the authorizer. Refresh auth->authorizer_buf and auth->authorizer_buf_len after a successful authorizer rebuild so the messenger sends the current buffer.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0060ec912292a550198d8d18ac95b433c92a7091
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2334e9997308305ee4fd508fdfe6086c4150ed60
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/26f814187abceee90dbb29a02133adb4786fbb13
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5ecfcd5c05866f185357700b81b461dae4f5ebb2
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/75e82e8944ac1efe9fdb88bd2f14d9a031282bdf
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/79a273df64238a4ade8b709689a78589f755b8ef
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/937d61f86d377a3aa578adae7a3dfcecdddf9d89
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9d37aec9ffe4e743dabc3f84502e9723e17a30d4

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ceph/auth_x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2334e9997308305ee4fd508fdfe6086c4150ed60",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "79a273df64238a4ade8b709689a78589f755b8ef",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "26f814187abceee90dbb29a02133adb4786fbb13",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "9d37aec9ffe4e743dabc3f84502e9723e17a30d4",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "75e82e8944ac1efe9fdb88bd2f14d9a031282bdf",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "0060ec912292a550198d8d18ac95b433c92a7091",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "5ecfcd5c05866f185357700b81b461dae4f5ebb2",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "937d61f86d377a3aa578adae7a3dfcecdddf9d89",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "29c65a277a64645af853e8c9a9b3dda0ddc421e0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d2c7223497cf8228416c70e3f4238ddd6c5bdf3c",
              "versionType": "git"
            },
            {
              "lessThan": "3.5",
              "status": "affected",
              "version": "3.4.50",
              "versionType": "semver"
            },
            {
              "lessThan": "3.10",
              "status": "affected",
              "version": "3.9.7",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ceph/auth_x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.10"
            },
            {
              "lessThan": "3.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "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\nlibceph: refresh auth-\u003eauthorizer_buf{,_len} after authorizer update\n\nceph_x_create_authorizer() caches au-\u003ebuf-\u003evec.iov_base and\nau-\u003ebuf-\u003evec.iov_len in struct ceph_auth_handshake.  These\ncached values are then used by the messenger connect code when\nsending the authorizer.\n\nceph_x_update_authorizer() can rebuild the authorizer when a newer\nservice ticket is available.  If the rebuilt authorizer no longer\nfits in the existing buffer, ceph_x_build_authorizer() drops its\nreference to au-\u003ebuf and allocates a new one.  If this is the final\nreference, ceph_buffer_put() frees the old ceph_buffer and its\nvec.iov_base, but auth-\u003eauthorizer_buf still points at that freed\nmemory.\n\nA subsequent msgr1 reconnect can therefore queue the stale pointer\nand trigger a KASAN slab-use-after-free in _copy_from_iter() while\ntcp_sendmsg() copies the authorizer.\n\nRefresh auth-\u003eauthorizer_buf and auth-\u003eauthorizer_buf_len after a\nsuccessful authorizer rebuild so the messenger sends the current\nbuffer."
    }
  ],
  "id": "CVE-2026-68156",
  "lastModified": "2026-08-19T17:20:32.823",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-10T13:20:01.780",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0060ec912292a550198d8d18ac95b433c92a7091"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2334e9997308305ee4fd508fdfe6086c4150ed60"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/26f814187abceee90dbb29a02133adb4786fbb13"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5ecfcd5c05866f185357700b81b461dae4f5ebb2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/75e82e8944ac1efe9fdb88bd2f14d9a031282bdf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/79a273df64238a4ade8b709689a78589f755b8ef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/937d61f86d377a3aa578adae7a3dfcecdddf9d89"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9d37aec9ffe4e743dabc3f84502e9723e17a30d4"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-68156 (GCVE-0-2026-68156)

Vulnerability from cvelistv5 – Published: 2026-08-10 11:59 – Updated: 2026-08-19 16:30

Title

libceph: refresh auth->authorizer_buf{,_len} after authorizer update

Summary

Severity

9.8 (Critical)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/2334e9997308305ee…
https://git.kernel.org/stable/c/79a273df64238a4ad…
https://git.kernel.org/stable/c/26f814187abceee90…
https://git.kernel.org/stable/c/9d37aec9ffe4e743d…
https://git.kernel.org/stable/c/75e82e8944ac1efe9…
https://git.kernel.org/stable/c/0060ec912292a5501…
https://git.kernel.org/stable/c/5ecfcd5c05866f185…
https://git.kernel.org/stable/c/937d61f86d377a3aa…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 2334e9997308305ee4fd508fdfe6086c4150ed60 (git) Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 79a273df64238a4ade8b709689a78589f755b8ef (git) Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 26f814187abceee90dbb29a02133adb4786fbb13 (git) Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 9d37aec9ffe4e743dabc3f84502e9723e17a30d4 (git) Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 75e82e8944ac1efe9fdb88bd2f14d9a031282bdf (git) Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 0060ec912292a550198d8d18ac95b433c92a7091 (git) Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 5ecfcd5c05866f185357700b81b461dae4f5ebb2 (git) Affected: 0bed9b5c523d577378b6f83eab5835fe30c27208 , < 937d61f86d377a3aa578adae7a3dfcecdddf9d89 (git) Affected: 29c65a277a64645af853e8c9a9b3dda0ddc421e0 (git) Affected: d2c7223497cf8228416c70e3f4238ddd6c5bdf3c (git) Affected: 3.4.50 , < 3.5 (semver) Affected: 3.9.7 , < 3.10 (semver)
Linux	Linux	Affected: 3.10 Unaffected: 0 , < 3.10 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ceph/auth_x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2334e9997308305ee4fd508fdfe6086c4150ed60",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "79a273df64238a4ade8b709689a78589f755b8ef",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "26f814187abceee90dbb29a02133adb4786fbb13",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "9d37aec9ffe4e743dabc3f84502e9723e17a30d4",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "75e82e8944ac1efe9fdb88bd2f14d9a031282bdf",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "0060ec912292a550198d8d18ac95b433c92a7091",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "5ecfcd5c05866f185357700b81b461dae4f5ebb2",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "lessThan": "937d61f86d377a3aa578adae7a3dfcecdddf9d89",
              "status": "affected",
              "version": "0bed9b5c523d577378b6f83eab5835fe30c27208",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "29c65a277a64645af853e8c9a9b3dda0ddc421e0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d2c7223497cf8228416c70e3f4238ddd6c5bdf3c",
              "versionType": "git"
            },
            {
              "lessThan": "3.5",
              "status": "affected",
              "version": "3.4.50",
              "versionType": "semver"
            },
            {
              "lessThan": "3.10",
              "status": "affected",
              "version": "3.9.7",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ceph/auth_x.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.10"
            },
            {
              "lessThan": "3.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "3.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.4.50",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.9.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: refresh auth-\u003eauthorizer_buf{,_len} after authorizer update\n\nceph_x_create_authorizer() caches au-\u003ebuf-\u003evec.iov_base and\nau-\u003ebuf-\u003evec.iov_len in struct ceph_auth_handshake.  These\ncached values are then used by the messenger connect code when\nsending the authorizer.\n\nceph_x_update_authorizer() can rebuild the authorizer when a newer\nservice ticket is available.  If the rebuilt authorizer no longer\nfits in the existing buffer, ceph_x_build_authorizer() drops its\nreference to au-\u003ebuf and allocates a new one.  If this is the final\nreference, ceph_buffer_put() frees the old ceph_buffer and its\nvec.iov_base, but auth-\u003eauthorizer_buf still points at that freed\nmemory.\n\nA subsequent msgr1 reconnect can therefore queue the stale pointer\nand trigger a KASAN slab-use-after-free in _copy_from_iter() while\ntcp_sendmsg() copies the authorizer.\n\nRefresh auth-\u003eauthorizer_buf and auth-\u003eauthorizer_buf_len after a\nsuccessful authorizer rebuild so the messenger sends the current\nbuffer."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - A compromised or malicious Ceph monitor/OSD delivers rotated cephx service tickets over TCP that increase secret_id and can enlarge the authorizer; on subsequent msgr1 reconnect the stale authorizer_buf is copied in tcp_sendmsg, so the UAF is reachable from the network peer without local syscall access.\nAC:L - An attacker controlling the Ceph cluster can deterministically issue a larger rotated ticket to force ceph_buffer realloc in ceph_x_update_authorizer, then trigger an msgr1 OSD/MDS/MON reconnect; no victim-specific memory layout or uncontrollable race is required.\nPR:N - Exploitation requires no privileges on the victim host; any kernel Ceph/RBD/CephFS client already connected to an attacker-controlled or compromised cluster is sufficient, matching other libceph client CVEs where the remote peer drives the bug.\nUI:N - After initial Ceph client setup, service-ticket rotation and messenger reconnects occur automatically; no further interactive user action is needed to reach the stale-buffer send path.\nS:U - The slab UAF corrupts kernel heap memory on the Ceph client host for local privilege escalation or crash, but does not cross VM, IOMMU, or container sandbox boundaries to another security authority.\nC:H - KASAN-confirmed slab use-after-free in _copy_from_iter during authorizer transmission reads freed kmalloc memory, which can disclose adjacent kernel pointers and is classed as exploitable arbitrary read per kernel UAF guidance.\nI:H - Freed authorizer buffers can be reclaimed with attacker-controlled data before reconnect, enabling heap corruption and control-flow hijack during the stale-pointer copy, consistent with kernel UAF write primitive scoring.\nA:H - The reported KASAN slab-use-after-free in tcp_sendmsg while copying the authorizer reliably causes kernel oops or panic on Ceph client reconnect, and remains repeatable whenever tickets are rotated and msgr1 reconnects."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:30:25.089Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2334e9997308305ee4fd508fdfe6086c4150ed60"
        },
        {
          "url": "https://git.kernel.org/stable/c/79a273df64238a4ade8b709689a78589f755b8ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/26f814187abceee90dbb29a02133adb4786fbb13"
        },
        {
          "url": "https://git.kernel.org/stable/c/9d37aec9ffe4e743dabc3f84502e9723e17a30d4"
        },
        {
          "url": "https://git.kernel.org/stable/c/75e82e8944ac1efe9fdb88bd2f14d9a031282bdf"
        },
        {
          "url": "https://git.kernel.org/stable/c/0060ec912292a550198d8d18ac95b433c92a7091"
        },
        {
          "url": "https://git.kernel.org/stable/c/5ecfcd5c05866f185357700b81b461dae4f5ebb2"
        },
        {
          "url": "https://git.kernel.org/stable/c/937d61f86d377a3aa578adae7a3dfcecdddf9d89"
        }
      ],
      "title": "libceph: refresh auth-\u003eauthorizer_buf{,_len} after authorizer update",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68156",
    "datePublished": "2026-08-10T11:59:22.514Z",
    "dateReserved": "2026-07-30T09:28:09.371Z",
    "dateUpdated": "2026-08-19T16:30:25.089Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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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FKIE_CVE-2026-68156

CVE-2026-68156 (GCVE-0-2026-68156)

Tags

Sightings

Nomenclature