CVE-2026-53006 (GCVE-0-2026-53006)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-08-05 12:32
VLAI
Title
ipv6: fix possible UAF in icmpv6_rcv()
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path. - Avoid potential future misuse after pskb_pull() call.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-825 - Expired Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 (git)
Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < aff0f28f5be803de2452ce702631c021fcd9ce8a (git)
Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 38bdbc897c0d83a3e2b925a51b69420f1feba29a (git)
Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 0069813e6ca9309eca78022bcb3aeb1e9ef90a12 (git)
Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 (git)
Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 7c66b368c6ff453f99cb39d84af93e908e51eef2 (git)
Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < 085e31a811ef234ef8c3e219c4636dfebfe7e10f (git)
Affected: 4b3418fba0fe819197e3359d5ddbef84ba2c59de , < f996edd7615e686ada141b7f3395025729ff8ccb (git)
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Linux Linux Affected: 4.4
Unaffected: 0 , < 4.4 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.209 , ≤ 5.15.* (semver)
Unaffected: 6.1.175 , ≤ 6.1.* (semver)
Unaffected: 6.6.141 , ≤ 6.6.* (semver)
Unaffected: 6.12.91 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:6.12.0-211.40.1.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:4.18.0-553.148.1.rt7.489.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::nfv
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:4.18.0-553.148.1.el8_10 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:5.14.0-687.30.1.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
    cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ipv6: fix possible UAF in icmpv6_rcv()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53006.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-53006\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-24T17:17:11.750\",\"lastModified\":\"2026-07-28T13:18:55.303\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nipv6: fix possible UAF in icmpv6_rcv()\\n\\nCaching saddr and daddr before pskb_pull() is problematic\\nsince skb-\u003ehead can change.\\n\\nRemove these temporary variables:\\n\\n- We only access \u0026ipv6_hdr(skb)-\u003esaddr and \u0026ipv6_hdr(skb)-\u003edaddr\\n  when net_dbg_ratelimited() is called in the slow path.\\n\\n- Avoid potential future misuse after pskb_pull() 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Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2492363\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json\",\"source\":\"0b0ca135-0b70-47e7-9f44-1890c2a1c46c\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-07-28T07:42:41+00:00",
      "cve": "CVE-2026-53006",
      "id": "CVE-2026-53006",
      "initial_release_date": "2026-06-24T00:00:00+00:00",
      "product_status:fixed": "762",
      "product_status:known_affected": "22",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ipv6: fix possible UAF in icmpv6_rcv()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-03T23:36:55Z",
      "cve": "CVE-2026-53006",
      "id": "CVE-2026-53006",
      "initial_release_date": "2026-06-26T02:13:47Z",
      "product_status:known_affected": "291",
      "product_status:known_not_affected": "4",
      "product_status:recommended": "103",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53006",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53006.json",
      "version": "7"
    }
  }
}



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Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.