fkie_cve-2024-49900
Vulnerability from fkie_nvd
Published
2024-10-21 18:15
Modified
2024-11-08 16:15
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: jfs: Fix uninit-value access of new_ea in ea_buffer syzbot reports that lzo1x_1_do_compress is using uninit-value: ===================================================== BUG: KMSAN: uninit-value in lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178 ... Uninit was stored to memory at: ea_put fs/jfs/xattr.c:639 [inline] ... Local variable ea_buf created at: __jfs_setxattr+0x5d/0x1ae0 fs/jfs/xattr.c:662 __jfs_xattr_set+0xe6/0x1f0 fs/jfs/xattr.c:934 ===================================================== The reason is ea_buf->new_ea is not initialized properly. Fix this by using memset to empty its content at the beginning in ea_get().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2b59ffad47db1c46af25ccad157bb3b25147c35cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6041536d18c5f51a84bc37cd568cbab61870031ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b24d41d47a6805c45378debf8bd115675d41da8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c244d5b48284a770d96ff703df2dfeadf804a73Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ad8b531de79c348bcb8133e7f5e827b884226afPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8b1dcf25c26d42e4a68c4725ce52a0543c7878ccPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c076b3746224982eebdba5c9e4b1467e146c0d64Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d7444f91a9f93eaa48827087ed0f3381c194181dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dac398ed272a378d2f42ac68ae408333a51baf52
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Fix uninit-value access of new_ea in ea_buffer\n\nsyzbot reports that lzo1x_1_do_compress is using uninit-value:\n\n=====================================================\nBUG: KMSAN: uninit-value in lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178\n\n...\n\nUninit was stored to memory at:\n ea_put fs/jfs/xattr.c:639 [inline]\n\n...\n\nLocal variable ea_buf created at:\n __jfs_setxattr+0x5d/0x1ae0 fs/jfs/xattr.c:662\n __jfs_xattr_set+0xe6/0x1f0 fs/jfs/xattr.c:934\n\n=====================================================\n\nThe reason is ea_buf-\u003enew_ea is not initialized properly.\n\nFix this by using memset to empty its content at the beginning\nin ea_get()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: jfs: Se corrige el acceso a uninit-value de new_ea en ea_buffer syzbot informa que lzo1x_1_do_compress est\u00e1 usando uninit-value: ========================================================= ERROR: KMSAN: uninit-value en lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178 ... Uninit se almacen\u00f3 en la memoria en: ea_put fs/jfs/xattr.c:639 [en l\u00ednea] ... La variable local ea_buf se cre\u00f3 en: __jfs_setxattr+0x5d/0x1ae0 fs/jfs/xattr.c:662 __jfs_xattr_set+0xe6/0x1f0 fs/jfs/xattr.c:934 ========================================================== El motivo es que ea_buf-\u0026gt;new_ea no se inicializa correctamente. Solucione esto usando memset para vaciar su contenido al principio en ea_get()."
    }
  ],
  "id": "CVE-2024-49900",
  "lastModified": "2024-11-08T16:15:31.090",
  "metrics": {
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-10-21T18:15:12.320",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-908"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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