CVE-2024-44968 (GCVE-0-2024-44968)

Vulnerability from cvelistv5 – Published: 2024-09-04 18:56 – Updated: 2025-11-03 22:14
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: tick/broadcast: Move per CPU pointer access into the atomic section The recent fix for making the take over of the broadcast timer more reliable retrieves a per CPU pointer in preemptible context. This went unnoticed as compilers hoist the access into the non-preemptible region where the pointer is actually used. But of course it's valid that the compiler keeps it at the place where the code puts it which rightfully triggers: BUG: using smp_processor_id() in preemptible [00000000] code: caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0 Move it to the actual usage site which is in a non-preemptible region.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: dfe19aa91378972f10530635ad83b2d77f481044 , < f54abf332a2bc0413cfa8bd6a8511f7aa99faea0 (git)
Affected: 457a1c87d454455d671a3045cf0b56157be110a1 , < f91fb47ecacc178a83a77eeebd25cbaec18c01d6 (git)
Affected: 9ef7190228145f959d9bc0ddca40ecf76bb413b0 , < 668c6c4a7e9e9f081c06b70f30104fb7013437ed (git)
Affected: d3b165c10473aa6fc6141bb5b1f6e5b50c1fb774 , < 541a900d245536d4809cb1aa322c3fcc2cdb58a6 (git)
Affected: 408bfb6b0a7f22e971ce6b600aec448769e580a8 , < 7b3ec186ba93e333e9efe7254e7e31c1828e5d2d (git)
Affected: 3a58c590f6bd1d20eb1e76c5cea31c36cc032339 , < b9d604933d5fd72dd37f24e1dc35f778297d745a (git)
Affected: 2cdab4b4bf77369961f706cdeb7d040db10c5217 , < 7dd12f85f150010ef7518201c63fa7e395f5c3e9 (git)
Affected: f7d43dd206e7e18c182f200e67a8db8c209907fa , < 6881e75237a84093d0986f56223db3724619f26e (git)
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    Linux Linux Affected: 6.1.103 , < 6.1.105 (semver)
Affected: 6.6.44 , < 6.6.46 (semver)
Affected: 6.10.3 , < 6.10.5 (semver)
Create a notification for this product.
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:14:18.137Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-44968\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:39:24.484235Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:24.792Z\"}}], \"cna\": {\"title\": \"tick/broadcast: Move per CPU pointer access into the atomic section\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"dfe19aa91378972f10530635ad83b2d77f481044\", \"lessThan\": \"f54abf332a2bc0413cfa8bd6a8511f7aa99faea0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"457a1c87d454455d671a3045cf0b56157be110a1\", \"lessThan\": \"f91fb47ecacc178a83a77eeebd25cbaec18c01d6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9ef7190228145f959d9bc0ddca40ecf76bb413b0\", \"lessThan\": \"668c6c4a7e9e9f081c06b70f30104fb7013437ed\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d3b165c10473aa6fc6141bb5b1f6e5b50c1fb774\", \"lessThan\": \"541a900d245536d4809cb1aa322c3fcc2cdb58a6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"408bfb6b0a7f22e971ce6b600aec448769e580a8\", \"lessThan\": \"7b3ec186ba93e333e9efe7254e7e31c1828e5d2d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3a58c590f6bd1d20eb1e76c5cea31c36cc032339\", \"lessThan\": \"b9d604933d5fd72dd37f24e1dc35f778297d745a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2cdab4b4bf77369961f706cdeb7d040db10c5217\", \"lessThan\": \"7dd12f85f150010ef7518201c63fa7e395f5c3e9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f7d43dd206e7e18c182f200e67a8db8c209907fa\", \"lessThan\": \"6881e75237a84093d0986f56223db3724619f26e\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/time/tick-broadcast.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.1.103\", \"lessThan\": \"6.1.105\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.6.44\", \"lessThan\": \"6.6.46\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.10.3\", \"lessThan\": \"6.10.5\", \"versionType\": \"semver\"}], \"programFiles\": [\"kernel/time/tick-broadcast.c\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f54abf332a2bc0413cfa8bd6a8511f7aa99faea0\"}, {\"url\": \"https://git.kernel.org/stable/c/f91fb47ecacc178a83a77eeebd25cbaec18c01d6\"}, {\"url\": \"https://git.kernel.org/stable/c/668c6c4a7e9e9f081c06b70f30104fb7013437ed\"}, {\"url\": \"https://git.kernel.org/stable/c/541a900d245536d4809cb1aa322c3fcc2cdb58a6\"}, {\"url\": \"https://git.kernel.org/stable/c/7b3ec186ba93e333e9efe7254e7e31c1828e5d2d\"}, {\"url\": \"https://git.kernel.org/stable/c/b9d604933d5fd72dd37f24e1dc35f778297d745a\"}, {\"url\": \"https://git.kernel.org/stable/c/7dd12f85f150010ef7518201c63fa7e395f5c3e9\"}, {\"url\": \"https://git.kernel.org/stable/c/6881e75237a84093d0986f56223db3724619f26e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntick/broadcast: Move per CPU pointer access into the atomic section\\n\\nThe recent fix for making the take over of the broadcast timer more\\nreliable retrieves a per CPU pointer in preemptible context.\\n\\nThis went unnoticed as compilers hoist the access into the non-preemptible\\nregion where the pointer is actually used. But of course it\u0027s valid that\\nthe compiler keeps it at the place where the code puts it which rightfully\\ntriggers:\\n\\n  BUG: using smp_processor_id() in preemptible [00000000] code:\\n       caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0\\n\\nMove it to the actual usage site which is in a non-preemptible region.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.105\", \"versionStartIncluding\": \"6.1.103\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.46\", \"versionStartIncluding\": \"6.6.44\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.5\", \"versionStartIncluding\": \"6.10.3\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:29:59.239Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-44968\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T22:14:18.137Z\", \"dateReserved\": \"2024-08-21T05:34:56.667Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-04T18:56:45.456Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

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.