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CVE-2022-50159 (GCVE-0-2022-50159)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:03 – Updated: 2026-05-11 19:13
VLAI
Title
of: check previous kernel's ima-kexec-buffer against memory bounds
Summary
In the Linux kernel, the following vulnerability has been resolved: of: check previous kernel's ima-kexec-buffer against memory bounds Presently ima_get_kexec_buffer() doesn't check if the previous kernel's ima-kexec-buffer lies outside the addressable memory range. This can result in a kernel panic if the new kernel is booted with 'mem=X' arg and the ima-kexec-buffer was allocated beyond that range by the previous kernel. The panic is usually of the form below: $ sudo kexec --initrd initrd vmlinux --append='mem=16G' <snip> BUG: Unable to handle kernel data access on read at 0xc000c01fff7f0000 Faulting instruction address: 0xc000000000837974 Oops: Kernel access of bad area, sig: 11 [#1] <snip> NIP [c000000000837974] ima_restore_measurement_list+0x94/0x6c0 LR [c00000000083b55c] ima_load_kexec_buffer+0xac/0x160 Call Trace: [c00000000371fa80] [c00000000083b55c] ima_load_kexec_buffer+0xac/0x160 [c00000000371fb00] [c0000000020512c4] ima_init+0x80/0x108 [c00000000371fb70] [c0000000020514dc] init_ima+0x4c/0x120 [c00000000371fbf0] [c000000000012240] do_one_initcall+0x60/0x2c0 [c00000000371fcc0] [c000000002004ad0] kernel_init_freeable+0x344/0x3ec [c00000000371fda0] [c0000000000128a4] kernel_init+0x34/0x1b0 [c00000000371fe10] [c00000000000ce64] ret_from_kernel_thread+0x5c/0x64 Instruction dump: f92100b8 f92100c0 90e10090 910100a0 4182050c 282a0017 3bc00000 40810330 7c0802a6 fb610198 7c9b2378 f80101d0 <a1240000> 2c090001 40820614 e9240010 ---[ end trace 0000000000000000 ]--- Fix this issue by checking returned PFN range of previous kernel's ima-kexec-buffer with page_is_ram() to ensure correct memory bounds.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 467d27824920e866af148132f555d40ca1fb199e , < beb5bba5dd132650c073f815c685c60c3e5b783b (git)
Affected: 467d27824920e866af148132f555d40ca1fb199e , < dc3b8525f83ac6bbc885bb24bbb8a76f4622200e (git)
Affected: 467d27824920e866af148132f555d40ca1fb199e , < 1b2263d6c86fca8f30e18231778393bfc287bb27 (git)
Affected: 467d27824920e866af148132f555d40ca1fb199e , < cbf9c4b9617b6767886a913705ca14b7600c77db (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.10
Unaffected: 0 , < 4.10 (semver)
Unaffected: 5.15.61 , ≤ 5.15.* (semver)
Unaffected: 5.18.18 , ≤ 5.18.* (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: check previous kernel\u0027s ima-kexec-buffer against memory bounds\n\nPresently ima_get_kexec_buffer() doesn\u0027t check if the previous kernel\u0027s\nima-kexec-buffer lies outside the addressable memory range. This can result\nin a kernel panic if the new kernel is booted with \u0027mem=X\u0027 arg and the\nima-kexec-buffer was allocated beyond that range by the previous kernel.\nThe panic is usually of the form below:\n\n$ sudo kexec --initrd initrd vmlinux --append=\u0027mem=16G\u0027\n\n\u003csnip\u003e\n BUG: Unable to handle kernel data access on read at 0xc000c01fff7f0000\n Faulting instruction address: 0xc000000000837974\n Oops: Kernel access of bad area, sig: 11 [#1]\n\u003csnip\u003e\n NIP [c000000000837974] ima_restore_measurement_list+0x94/0x6c0\n LR [c00000000083b55c] ima_load_kexec_buffer+0xac/0x160\n Call Trace:\n [c00000000371fa80] [c00000000083b55c] ima_load_kexec_buffer+0xac/0x160\n [c00000000371fb00] [c0000000020512c4] ima_init+0x80/0x108\n [c00000000371fb70] [c0000000020514dc] init_ima+0x4c/0x120\n [c00000000371fbf0] [c000000000012240] do_one_initcall+0x60/0x2c0\n [c00000000371fcc0] [c000000002004ad0] kernel_init_freeable+0x344/0x3ec\n [c00000000371fda0] [c0000000000128a4] kernel_init+0x34/0x1b0\n [c00000000371fe10] [c00000000000ce64] ret_from_kernel_thread+0x5c/0x64\n Instruction dump:\n f92100b8 f92100c0 90e10090 910100a0 4182050c 282a0017 3bc00000 40810330\n 7c0802a6 fb610198 7c9b2378 f80101d0 \u003ca1240000\u003e 2c090001 40820614 e9240010\n ---[ end trace 0000000000000000 ]---\n\nFix this issue by checking returned PFN range of previous kernel\u0027s\nima-kexec-buffer with page_is_ram() to ensure correct memory bounds."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: de: comprobar el b\u00fafer ima-kexec del kernel anterior con los l\u00edmites de memoria. Actualmente, ima_get_kexec_buffer() no comprueba si el b\u00fafer ima-kexec del kernel anterior se encuentra fuera del rango de memoria direccionable. Esto puede provocar un p\u00e1nico del kernel si el nuevo kernel se inicia con el argumento \u0027mem=X\u0027 y el kernel anterior asign\u00f3 el b\u00fafer ima-kexec fuera de ese rango. El p\u00e1nico suele tener el siguiente formato: $ sudo kexec --initrd initrd vmlinux --append=\u0027mem=16G\u0027  ERROR: No se puede controlar el acceso a los datos del kernel en lectura en 0xc000c01fff7f0000 Direcci\u00f3n de instrucci\u00f3n con error: 0xc000000000837974 Oops: Acceso al kernel de \u00e1rea defectuosa, firma: 11 [#1]  NIP [c000000000837974] ima_restore_measurement_list+0x94/0x6c0 LR [c00000000083b55c] ima_load_kexec_buffer+0xac/0x160 Rastreo de llamadas: [c00000000371fa80] [c00000000083b55c] ima_load_kexec_buffer+0xac/0x160 [c00000000371fb00] [c0000000020512c4] ima_init+0x80/0x108 [c00000000371fb70] [c0000000020514dc] init_ima+0x4c/0x120 [c00000000371fbf0] [c000000000012240] hacer_una_initcall+0x60/0x2c0 [c00000000371fcc0] [c000000002004ad0] kernel_init_freeable+0x344/0x3ec [c00000000371fda0] [c0000000000128a4] kernel_init+0x34/0x1b0 [c00000000371fe10] [c00000000000ce64] ret_from_kernel_thread+0x5c/0x64 Volcado de instrucciones: f92100b8 f92100c0 90e10090 910100a0 4182050c 282a0017 3bc00000 40810330 7c0802a6 fb610198 7c9b2378 f80101d0  2c090001 40820614 e9240010 ---[ fin del seguimiento 0000000000000000 ]--- Solucione este problema verificando el rango PFN devuelto del ima-kexec-buffer del kernel anterior con page_is_ram() para garantizar los l\u00edmites de memoria correctos."
          }
        ],
        "id": "CVE-2022-50159",
        "lastModified": "2026-06-17T05:22:52.753",
        "metrics": {
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              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
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                "lang": "en",
                "value": "NVD-CWE-noinfo"
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            "source": "nvd@nist.gov",
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:40:22+00:00",
      "cve": "CVE-2022-50159",
      "id": "CVE-2022-50159",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "70",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: of: check previous kernel\u0027s ima-kexec-buffer against memory bounds",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-50159.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T16:51:44Z",
      "cve": "CVE-2022-50159",
      "id": "CVE-2022-50159",
      "initial_release_date": "2025-06-19T03:40:14Z",
      "product_status:known_affected": "699",
      "product_status:known_not_affected": "161",
      "product_status:recommended": "43",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-50159",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-50159.json",
      "version": "28"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.


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.