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medium 4.0

CVE-2010-4242 json

The hci_uart_tty_open function in the HCI UART driver (drivers/bluetooth/hci_ldisc.c) in the Linux kernel 2.6.36, and possibly other versio…

published 15y ago modified 4mo ago also EUVD-2010-4215

cvss
4.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

The hci_uart_tty_open function in the HCI UART driver (drivers/bluetooth/hci_ldisc.c) in the Linux kernel 2.6.36, and possibly other versions, does not verify whether the tty has a write operation, which allows local users to cause a denial of service (NULL pointer dereference) via vectors related to the Bluetooth driver.

Patch / fix

  • kernel RHEL 6 2.6.32-71.14.1.el6
  • perf RHEL 6 2.6.32-71.14.1.el6
  • kernel-kdump RHEL 6 2.6.32-71.14.1.el6
  • kernel-firmware RHEL 6 2.6.32-71.14.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-71.14.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-71.14.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-71.14.1.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-71.14.1.el6

red hat advisories RHSA-2011:0007RHSA-2011:0004RHSA-2011:0162RHSA-2011:0330

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2010-4242 updated cvss 4.0

kernel: missing tty ops write function presence check in hci_uart_tty_open()

  • Red Hat MRG Realtime for RHEL 5 Server perf 2.6.33.7-rt29.55.el5rt, kernel-rt 2.6.33.7-rt29.55.el5rt, kernel-rt-trace 2.6.33.7-rt29.55.el5rt, kernel-rt-vanilla 2.6.33.7-rt29.55.el5rt, kernel-rt-debuginfo-common 2.6.33.7-rt29.55.el5rt
    fixed: vendor fix RHSA-2011:0330
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-194.32.1.el5, kernel-PAE 2.6.18-194.32.1.el5, kernel-xen 2.6.18-194.32.1.el5, kernel-kdump 2.6.18-194.32.1.el5, kernel-debuginfo-common 2.6.18-194.32.1.el5
    fixed: vendor fix RHSA-2011:0004
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-89.35.1.EL, kernel-smp 2.6.9-89.35.1.EL, kernel-xenU 2.6.9-89.35.1.EL, kernel-hugemem 2.6.9-89.35.1.EL, kernel-largesmp 2.6.9-89.35.1.EL
    fixed: vendor fix RHSA-2011:0162
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-194.32.1.el5, kernel-PAE 2.6.18-194.32.1.el5, kernel-xen 2.6.18-194.32.1.el5, kernel-kdump 2.6.18-194.32.1.el5, kernel-debuginfo-common 2.6.18-194.32.1.el5
    fixed: vendor fix RHSA-2011:0004
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more
    fixed: vendor fix RHSA-2011:0007
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-89.35.1.EL, kernel-smp 2.6.9-89.35.1.EL, kernel-xenU 2.6.9-89.35.1.EL, kernel-hugemem 2.6.9-89.35.1.EL, kernel-largesmp 2.6.9-89.35.1.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-89.35.1.EL, kernel-smp 2.6.9-89.35.1.EL, kernel-xenU 2.6.9-89.35.1.EL, kernel-hugemem 2.6.9-89.35.1.EL, kernel-largesmp 2.6.9-89.35.1.EL
    fixed: vendor fix RHSA-2011:0162
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-71.14.1.el6, kernel 2.6.32-71.14.1.el6, kernel-kdump 2.6.32-71.14.1.el6, kernel-firmware 2.6.32-71.14.1.el6, kernel-bootwrapper 2.6.32-71.14.1.el6, kernel-debuginfo-common-i686 2.6.32-71.14.1.el6, +3 more
    fixed: vendor fix RHSA-2011:0007
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-89.35.1.EL, kernel-smp 2.6.9-89.35.1.EL, kernel-xenU 2.6.9-89.35.1.EL, kernel-hugemem 2.6.9-89.35.1.EL, kernel-largesmp 2.6.9-89.35.1.EL
    fixed: vendor fix RHSA-2011:0162

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • xorl.wordpress.com http://xorl.wordpress.com/2010/12/01/cve-2010-4242-linux-kernel-bluetooth-hci-uart-invalid-pointer-access/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:L/AC:H/Au:N/C:N/I:N/A:C

Classification

Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.