CVE-2024-46793 (GCVE-0-2024-46793)

Vulnerability from cvelistv5 – Published: 2024-09-18 07:12 – Updated: 2026-05-11 20:36
VLAI
Title
ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boards harder
Summary
In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boards harder Since commit 13f58267cda3 ("ASoC: soc.h: don't create dummy Component via COMP_DUMMY()") dummy codecs declared like this: SND_SOC_DAILINK_DEF(dummy, DAILINK_COMP_ARRAY(COMP_DUMMY())); expand to: static struct snd_soc_dai_link_component dummy[] = { }; Which means that dummy is a zero sized array and thus dais[i].codecs should not be dereferenced *at all* since it points to the address of the next variable stored in the data section as the "dummy" variable has an address but no size, so even dereferencing dais[0] is already an out of bounds array reference. Which means that the if (dais[i].codecs->name) check added in commit 7d99a70b6595 ("ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boards") relies on that the part of the next variable which the name member maps to just happens to be NULL. Which apparently so far it usually is, except when it isn't and then it results in crashes like this one: [ 28.795659] BUG: unable to handle page fault for address: 0000000000030011 ... [ 28.795780] Call Trace: [ 28.795787] <TASK> ... [ 28.795862] ? strcmp+0x18/0x40 [ 28.795872] 0xffffffffc150c605 [ 28.795887] platform_probe+0x40/0xa0 ... [ 28.795979] ? __pfx_init_module+0x10/0x10 [snd_soc_sst_bytcr_wm5102] Really fix things this time around by checking dais.num_codecs != 0.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7d99a70b65951108d82e1618c67abe69c3ed7720 , < 85cda5b040bda9c577b34eb72d5b2e5b7e31985c (git)
Affected: 7d99a70b65951108d82e1618c67abe69c3ed7720 , < 0cc65482f5b03ac2b1c240bc34665e43ea2d71bb (git)
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Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.10.10 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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Esto significa que la comprobaci\u00f3n if (dais[i].codecs-\u0026gt;name) a\u00f1adida en el commit 7d99a70b6595 (\\\"ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boards\\\") se basa en que la parte de la siguiente variable a la que se asigna el miembro name resulta ser NULL. Lo que aparentemente hasta ahora suele ser as\u00ed, excepto cuando no lo es y entonces da como resultado fallos como este: [ 28.795659] ERROR: no se puede gestionar la falla de p\u00e1gina para la direcci\u00f3n: 0000000000030011 ... [ 28.795780] Seguimiento de llamadas: [ 28.795787]  ... [ 28.795862] ? strcmp+0x18/0x40 [ 28.795872] 0xffffffffc150c605 [ 28.795887] platform_probe+0x40/0xa0 ... [ 28.795979] ? __pfx_init_module+0x10/0x10 [snd_soc_sst_bytcr_wm5102] Esta vez realmente solucione las cosas comprobando que dais.num_codecs != 0.\"}],\"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\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8\",\"versionEndExcluding\":\"6.10.10\",\"matchCriteriaId\":\"4FAFFECB-D55B-4130-801C-AE52B8A6B1BA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B77A9280-37E6-49AD-B559-5B23A3B1DC3D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0cc65482f5b03ac2b1c240bc34665e43ea2d71bb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/85cda5b040bda9c577b34eb72d5b2e5b7e31985c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46793\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T14:23:21.765056Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T14:23:22.876Z\"}}], \"cna\": {\"title\": \"ASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boards harder\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7d99a70b65951108d82e1618c67abe69c3ed7720\", \"lessThan\": \"85cda5b040bda9c577b34eb72d5b2e5b7e31985c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7d99a70b65951108d82e1618c67abe69c3ed7720\", \"lessThan\": \"0cc65482f5b03ac2b1c240bc34665e43ea2d71bb\", \"versionType\": \"git\"}], \"programFiles\": [\"sound/soc/intel/boards/bxt_rt298.c\", \"sound/soc/intel/boards/bytcht_cx2072x.c\", \"sound/soc/intel/boards/bytcht_da7213.c\", \"sound/soc/intel/boards/bytcht_es8316.c\", \"sound/soc/intel/boards/bytcr_rt5640.c\", \"sound/soc/intel/boards/bytcr_rt5651.c\", \"sound/soc/intel/boards/bytcr_wm5102.c\", \"sound/soc/intel/boards/cht_bsw_rt5645.c\", \"sound/soc/intel/boards/cht_bsw_rt5672.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.8\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.8\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.10.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"sound/soc/intel/boards/bxt_rt298.c\", \"sound/soc/intel/boards/bytcht_cx2072x.c\", \"sound/soc/intel/boards/bytcht_da7213.c\", \"sound/soc/intel/boards/bytcht_es8316.c\", \"sound/soc/intel/boards/bytcr_rt5640.c\", \"sound/soc/intel/boards/bytcr_rt5651.c\", \"sound/soc/intel/boards/bytcr_wm5102.c\", \"sound/soc/intel/boards/cht_bsw_rt5645.c\", \"sound/soc/intel/boards/cht_bsw_rt5672.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/85cda5b040bda9c577b34eb72d5b2e5b7e31985c\"}, {\"url\": \"https://git.kernel.org/stable/c/0cc65482f5b03ac2b1c240bc34665e43ea2d71bb\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nASoC: Intel: Boards: Fix NULL pointer deref in BYT/CHT boards harder\\n\\nSince commit 13f58267cda3 (\\\"ASoC: soc.h: don\u0027t create dummy Component\\nvia COMP_DUMMY()\\\") dummy codecs declared like this:\\n\\nSND_SOC_DAILINK_DEF(dummy,\\n        DAILINK_COMP_ARRAY(COMP_DUMMY()));\\n\\nexpand to:\\n\\nstatic struct snd_soc_dai_link_component dummy[] = {\\n};\\n\\nWhich means that dummy is a zero sized array and thus dais[i].codecs should\\nnot be dereferenced *at all* since it points to the address of the next\\nvariable stored in the data section as the \\\"dummy\\\" variable has an address\\nbut no size, so even dereferencing dais[0] is already an out of bounds\\narray reference.\\n\\nWhich means that the if (dais[i].codecs-\u003ename) check added in\\ncommit 7d99a70b6595 (\\\"ASoC: Intel: Boards: Fix NULL pointer deref\\nin BYT/CHT boards\\\") relies on that the part of the next variable which\\nthe name member maps to just happens to be NULL.\\n\\nWhich apparently so far it usually is, except when it isn\u0027t\\nand then it results in crashes like this one:\\n\\n[   28.795659] BUG: unable to handle page fault for address: 0000000000030011\\n...\\n[   28.795780] Call Trace:\\n[   28.795787]  \u003cTASK\u003e\\n...\\n[   28.795862]  ? strcmp+0x18/0x40\\n[   28.795872]  0xffffffffc150c605\\n[   28.795887]  platform_probe+0x40/0xa0\\n...\\n[   28.795979]  ? __pfx_init_module+0x10/0x10 [snd_soc_sst_bytcr_wm5102]\\n\\nReally fix things this time around by checking dais.num_codecs != 0.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:23:15.862Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46793\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:23:15.862Z\", \"dateReserved\": \"2024-09-11T15:12:18.279Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-18T07:12:48.283Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.