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CVE-2022-49804 (GCVE-0-2022-49804)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-08-05 08:56
VLAI
Title
s390: avoid using global register for current_stack_pointer
Summary
In the Linux kernel, the following vulnerability has been resolved: s390: avoid using global register for current_stack_pointer Commit 30de14b1884b ("s390: current_stack_pointer shouldn't be a function") made current_stack_pointer a global register variable like on many other architectures. Unfortunately on s390 it uncovers old gcc bug which is fixed only since gcc-9.1 [gcc commit 3ad7fed1cc87 ("S/390: Fix PR89775. Stackpointer save/restore instructions removed")] and backported to gcc-8.4 and later. Due to this bug gcc versions prior to 8.4 generate broken code which leads to stack corruptions. Current minimal gcc version required to build the kernel is declared as 5.1. It is not possible to fix all old gcc versions, so work around this problem by avoiding using global register variable for current_stack_pointer.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 30de14b1884ba609fc1acfba5b40309e3a6ccefe , < a478952a8ac44e32316dc046a063a7dc34825aa6 (git)
Affected: 30de14b1884ba609fc1acfba5b40309e3a6ccefe , < e3c11025bcd2142a61abe5806b2f86a0e78118df (git)
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Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 6.0.10 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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Se eliminaron las instrucciones de guardado/restauraci\u00f3n de Stackpointer\\\")] y se ha retroportado a gcc-8.4 y posteriores. Debido a este error, las versiones de gcc anteriores a la 8.4 generan c\u00f3digo defectuoso que provoca corrupciones en la pila. La versi\u00f3n m\u00ednima actual de gcc requerida para compilar el kernel es la 5.1. 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      "cve": "CVE-2022-49804",
      "id": "CVE-2022-49804",
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      "product_status:fixed": "305",
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      "status": "final",
      "title": "kernel: s390: avoid using global register for current_stack_pointer",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49804.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-29T02:25:19Z",
      "cve": "CVE-2022-49804",
      "id": "CVE-2022-49804",
      "initial_release_date": "2025-05-06T03:07:26Z",
      "product_status:known_not_affected": "514",
      "product_status:recommended": "43",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49804",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49804.json",
      "version": "13"
    }
  }
}



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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

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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.