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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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:13:56.896Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/beb5bba5dd132650c073f815c685c60c3e5b783b"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc3b8525f83ac6bbc885bb24bbb8a76f4622200e"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b2263d6c86fca8f30e18231778393bfc287bb27"
        },
        {
          "url": "https://git.kernel.org/stable/c/cbf9c4b9617b6767886a913705ca14b7600c77db"
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      ],
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50159",
    "datePublished": "2025-06-18T11:03:15.826Z",
    "dateReserved": "2025-06-18T10:57:27.425Z",
    "dateUpdated": "2026-05-11T19:13:56.896Z",
    "state": "PUBLISHED"
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      "date": "2026-09-14",
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    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50159\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-06-18T11:15:46.090\",\"lastModified\":\"2026-06-17T05:22:52.753\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/of/kexec.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"467d27824920e866af148132f555d40ca1fb199e\",\"lessThan\":\"beb5bba5dd132650c073f815c685c60c3e5b783b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"467d27824920e866af148132f555d40ca1fb199e\",\"lessThan\":\"dc3b8525f83ac6bbc885bb24bbb8a76f4622200e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"467d27824920e866af148132f555d40ca1fb199e\",\"lessThan\":\"1b2263d6c86fca8f30e18231778393bfc287bb27\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"467d27824920e866af148132f555d40ca1fb199e\",\"lessThan\":\"cbf9c4b9617b6767886a913705ca14b7600c77db\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/of/kexec.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.61\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18.18\",\"lessThanOrEqual\":\"5.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.19.2\",\"lessThanOrEqual\":\"5.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"5.15.61\",\"matchCriteriaId\":\"CCA61D13-625A-453E-9E74-3B89E83972B0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.18.18\",\"matchCriteriaId\":\"5B42E453-8837-49D0-A5EF-03F818A6DC11\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.19\",\"versionEndExcluding\":\"5.19.2\",\"matchCriteriaId\":\"A1A2A5A5-4598-4D7E-BA07-4660398D6C8F\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1b2263d6c86fca8f30e18231778393bfc287bb27\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/beb5bba5dd132650c073f815c685c60c3e5b783b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cbf9c4b9617b6767886a913705ca14b7600c77db\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dc3b8525f83ac6bbc885bb24bbb8a76f4622200e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "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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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.