csaf_certbund - wid-sec-w-2024-1619

WID-SEC-W-2024-1619

Vulnerability from csaf_certbund - Published: 2024-07-15 22:00 - Updated: 2024-10-09 22:00

Summary

Linux Kernel: Schwachstelle ermöglicht nicht spezifizierten Angriff

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung

Der Kernel stellt den Kern des Linux Betriebssystems dar.

Angriff

Ein Angreifer kann eine Schwachstelle in Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

Betroffene Betriebssysteme

- Linux

JSON

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{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Der Kernel stellt den Kern des Linux Betriebssystems dar.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann eine Schwachstelle in Linux Kernel ausnutzen, um einen nicht n\u00e4her spezifizierten Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2024-1619 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-1619.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-1619 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-1619"
      },
      {
        "category": "external",
        "summary": "Linux CVE Announce vom 2024-07-15",
        "url": "https://lore.kernel.org/linux-cve-announce/2024071601-CVE-2023-52886-a235@gregkh/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:2894-1 vom 2024-08-13",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-August/019182.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:2902-1 vom 2024-08-14",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-August/019193.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:2929-1 vom 2024-08-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-August/019209.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:2939-1 vom 2024-08-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-August/019211.html"
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      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:2947-1 vom 2024-08-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-August/019220.html"
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        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:3194-1 vom 2024-09-10",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-September/019400.html"
      },
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        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:3195-1 vom 2024-09-10",
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        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-September/019497.html"
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      {
        "category": "external",
        "summary": "Dell Security Advisory DSA-2024-422 vom 2024-10-10",
        "url": "https://www.dell.com/support/kbdoc/de-de/000234730/dsa-2024-422-security-update-for-dell-networker-vproxy-multiple-component-vulnerabilities"
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    "source_lang": "en-US",
    "title": "Linux Kernel: Schwachstelle erm\u00f6glicht nicht spezifizierten Angriff",
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CVE-2023-52886 (GCVE-0-2023-52886)

Vulnerability from cvelistv5 – Published: 2024-07-16 09:40 – Updated: 2025-05-04 12:49

Summary

In the Linux kernel, the following vulnerability has been resolved: USB: core: Fix race by not overwriting udev->descriptor in hub_port_init() Syzbot reported an out-of-bounds read in sysfs.c:read_descriptors(): BUG: KASAN: slab-out-of-bounds in read_descriptors+0x263/0x280 drivers/usb/core/sysfs.c:883 Read of size 8 at addr ffff88801e78b8c8 by task udevd/5011 CPU: 0 PID: 5011 Comm: udevd Not tainted 6.4.0-rc6-syzkaller-00195-g40f71e7cd3c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351 print_report mm/kasan/report.c:462 [inline] kasan_report+0x11c/0x130 mm/kasan/report.c:572 read_descriptors+0x263/0x280 drivers/usb/core/sysfs.c:883 ... Allocated by task 758: ... __do_kmalloc_node mm/slab_common.c:966 [inline] __kmalloc+0x5e/0x190 mm/slab_common.c:979 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:680 [inline] usb_get_configuration+0x1f7/0x5170 drivers/usb/core/config.c:887 usb_enumerate_device drivers/usb/core/hub.c:2407 [inline] usb_new_device+0x12b0/0x19d0 drivers/usb/core/hub.c:2545 As analyzed by Khazhy Kumykov, the cause of this bug is a race between read_descriptors() and hub_port_init(): The first routine uses a field in udev->descriptor, not expecting it to change, while the second overwrites it. Prior to commit 45bf39f8df7f ("USB: core: Don't hold device lock while reading the "descriptors" sysfs file") this race couldn't occur, because the routines were mutually exclusive thanks to the device locking. Removing that locking from read_descriptors() exposed it to the race. The best way to fix the bug is to keep hub_port_init() from changing udev->descriptor once udev has been initialized and registered. Drivers expect the descriptors stored in the kernel to be immutable; we should not undermine this expectation. In fact, this change should have been made long ago. So now hub_port_init() will take an additional argument, specifying a buffer in which to store the device descriptor it reads. (If udev has not yet been initialized, the buffer pointer will be NULL and then hub_port_init() will store the device descriptor in udev as before.) This eliminates the data race responsible for the out-of-bounds read. The changes to hub_port_init() appear more extensive than they really are, because of indentation changes resulting from an attempt to avoid writing to other parts of the usb_device structure after it has been initialized. Similar changes should be made to the code that reads the BOS descriptor, but that can be handled in a separate patch later on. This patch is sufficient to fix the bug found by syzbot.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/9d241c5d9a9b7ad95…
	https://git.kernel.org/stable/c/7fe9d87996062f5eb…
	https://git.kernel.org/stable/c/8186596a663506b11…
	https://git.kernel.org/stable/c/b4a074b1fb222164e…
	https://git.kernel.org/stable/c/b9fbfb349eacc0820…
	https://git.kernel.org/stable/c/ff33299ec8bb80cdc…

Impacted products

Vendor

Product

Version

Linux

Affected: 218925bfd5d1436e337c4f961e9c149fbe32de6d , < 9d241c5d9a9b7ad95c90c6520272fe404d5ac88f (git)
Affected: 77358093331e9769855140bf94a3f00ecdcf4bb1 , < 7fe9d87996062f5eb0ca476ad0257f79bf43aaf5 (git)
Affected: c87fb861ec185fdc578b4fdc6a05920b6a843840 , < 8186596a663506b1124bede9fde6f243ef9f37ee (git)
Affected: 45bf39f8df7f05efb83b302c65ae3b9bc92b7065 , < b4a074b1fb222164ed7d5c0b8c922dc4a0840848 (git)
Affected: 45bf39f8df7f05efb83b302c65ae3b9bc92b7065 , < b9fbfb349eacc0820f91c797d7f0a3ac7a4935b5 (git)
Affected: 45bf39f8df7f05efb83b302c65ae3b9bc92b7065 , < ff33299ec8bb80cdcc073ad9c506bd79bb2ed20b (git)
Affected: 6badaf880edf51a2da7a439699676394dfdef3e5 (git)
Affected: 5f35b5d3bd6914c68f743741443dfd3a64b0e455 (git)
Affected: a1e89c8b29d003a20ed2dae6bdae1598d1f23e42 (git)
Affected: 1bcb238c54a9c6dc4bded06b06ba7458a5eefa87 (git)

Linux

Affected: 6.3
Unaffected: 0 , < 6.3 (semver)
Unaffected: 5.10.195 , ≤ 5.10.* (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.53 , ≤ 6.1.* (semver)
Unaffected: 6.4.16 , ≤ 6.4.* (semver)
Unaffected: 6.5.3 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: core: Fix race by not overwriting udev-\u003edescriptor in hub_port_init()\n\nSyzbot reported an out-of-bounds read in sysfs.c:read_descriptors():\n\nBUG: KASAN: slab-out-of-bounds in read_descriptors+0x263/0x280 drivers/usb/core/sysfs.c:883\nRead of size 8 at addr ffff88801e78b8c8 by task udevd/5011\n\nCPU: 0 PID: 5011 Comm: udevd Not tainted 6.4.0-rc6-syzkaller-00195-g40f71e7cd3c6 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106\n print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351\n print_report mm/kasan/report.c:462 [inline]\n kasan_report+0x11c/0x130 mm/kasan/report.c:572\n read_descriptors+0x263/0x280 drivers/usb/core/sysfs.c:883\n...\nAllocated by task 758:\n...\n __do_kmalloc_node mm/slab_common.c:966 [inline]\n __kmalloc+0x5e/0x190 mm/slab_common.c:979\n kmalloc include/linux/slab.h:563 [inline]\n kzalloc include/linux/slab.h:680 [inline]\n usb_get_configuration+0x1f7/0x5170 drivers/usb/core/config.c:887\n usb_enumerate_device drivers/usb/core/hub.c:2407 [inline]\n usb_new_device+0x12b0/0x19d0 drivers/usb/core/hub.c:2545\n\nAs analyzed by Khazhy Kumykov, the cause of this bug is a race between\nread_descriptors() and hub_port_init(): The first routine uses a field\nin udev-\u003edescriptor, not expecting it to change, while the second\noverwrites it.\n\nPrior to commit 45bf39f8df7f (\"USB: core: Don\u0027t hold device lock while\nreading the \"descriptors\" sysfs file\") this race couldn\u0027t occur,\nbecause the routines were mutually exclusive thanks to the device\nlocking.  Removing that locking from read_descriptors() exposed it to\nthe race.\n\nThe best way to fix the bug is to keep hub_port_init() from changing\nudev-\u003edescriptor once udev has been initialized and registered.\nDrivers expect the descriptors stored in the kernel to be immutable;\nwe should not undermine this expectation.  In fact, this change should\nhave been made long ago.\n\nSo now hub_port_init() will take an additional argument, specifying a\nbuffer in which to store the device descriptor it reads.  (If udev has\nnot yet been initialized, the buffer pointer will be NULL and then\nhub_port_init() will store the device descriptor in udev as before.)\nThis eliminates the data race responsible for the out-of-bounds read.\n\nThe changes to hub_port_init() appear more extensive than they really\nare, because of indentation changes resulting from an attempt to avoid\nwriting to other parts of the usb_device structure after it has been\ninitialized.  Similar changes should be made to the code that reads\nthe BOS descriptor, but that can be handled in a separate patch later\non.  This patch is sufficient to fix the bug found by syzbot."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T12:49:47.277Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9d241c5d9a9b7ad95c90c6520272fe404d5ac88f"
        },
        {
          "url": "https://git.kernel.org/stable/c/7fe9d87996062f5eb0ca476ad0257f79bf43aaf5"
        },
        {
          "url": "https://git.kernel.org/stable/c/8186596a663506b1124bede9fde6f243ef9f37ee"
        },
        {
          "url": "https://git.kernel.org/stable/c/b4a074b1fb222164ed7d5c0b8c922dc4a0840848"
        },
        {
          "url": "https://git.kernel.org/stable/c/b9fbfb349eacc0820f91c797d7f0a3ac7a4935b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff33299ec8bb80cdcc073ad9c506bd79bb2ed20b"
        }
      ],
      "title": "USB: core: Fix race by not overwriting udev-\u003edescriptor in hub_port_init()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52886",
    "datePublished": "2024-07-16T09:40:58.495Z",
    "dateReserved": "2024-05-21T15:35:00.782Z",
    "dateUpdated": "2025-05-04T12:49:47.277Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Action not permitted

WID-SEC-W-2024-1619

CVE-2023-52886 (GCVE-0-2023-52886)

Tags

Sightings

Nomenclature