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Fencer Vulns
high 7.8

CVE-2008-2812 json

The Linux kernel before 2.6.25.10 does not properly perform tty operations, which allows local users to cause a denial of service (system c…

published 2008-07-09 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-2805

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

The Linux kernel before 2.6.25.10 does not properly perform tty operations, which allows local users to cause a denial of service (system crash) or possibly gain privileges via vectors involving NULL pointer dereference of function pointers in (1) hamradio/6pack.c, (2) hamradio/mkiss.c, (3) irda/irtty-sir.c, (4) ppp_async.c, (5) ppp_synctty.c, (6) slip.c, (7) wan/x25_asy.c, and (8) wireless/strip.c in drivers/net/.

Patch / fix

  • linux linux_kernel 2.6.25.10
  • kernel RHEL 3 2.4.21-58.EL
  • kernel-smp RHEL 3 2.4.21-58.EL
  • kernel-BOOT RHEL 3 2.4.21-58.EL
  • kernel-source RHEL 3 2.4.21-58.EL
  • kernel-hugemem RHEL 3 2.4.21-58.EL
  • kernel-unsupported RHEL 3 2.4.21-58.EL
  • kernel-smp-unsupported RHEL 3 2.4.21-58.EL
  • kernel-hugemem-unsupported RHEL 3 2.4.21-58.EL

red hat advisories RHSA-2008:0973RHSA-2008:0612RHSA-2008:0665

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-2008-2812 updated

kernel: NULL ptr dereference in multiple network drivers due to missing checks in tty code

  • Red Hat Desktop version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-92.1.10.el5, kernel-PAE 2.6.18-92.1.10.el5, kernel-xen 2.6.18-92.1.10.el5, kernel-kdump 2.6.18-92.1.10.el5, kernel-debuginfo-common 2.6.18-92.1.10.el5
    fixed: vendor fix RHSA-2008:0612
  • Red Hat Enterprise Linux AS version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-78.EL, kernel-smp 2.6.9-78.EL, kernel-xenU 2.6.9-78.EL, kernel-hugemem 2.6.9-78.EL, kernel-largesmp 2.6.9-78.EL
    fixed: vendor fix RHSA-2008:0665
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-92.1.10.el5, kernel-PAE 2.6.18-92.1.10.el5, kernel-xen 2.6.18-92.1.10.el5, kernel-kdump 2.6.18-92.1.10.el5, kernel-debuginfo-common 2.6.18-92.1.10.el5
    fixed: vendor fix RHSA-2008:0612
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-78.EL, kernel-smp 2.6.9-78.EL, kernel-xenU 2.6.9-78.EL, kernel-hugemem 2.6.9-78.EL, kernel-largesmp 2.6.9-78.EL
    fixed: vendor fix RHSA-2008:0665
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-78.EL, kernel-smp 2.6.9-78.EL, kernel-xenU 2.6.9-78.EL, kernel-hugemem 2.6.9-78.EL, kernel-largesmp 2.6.9-78.EL
    fixed: vendor fix RHSA-2008:0665
show 2 more
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-58.EL, kernel-smp 2.4.21-58.EL, kernel-BOOT 2.4.21-58.EL, kernel-source 2.4.21-58.EL, kernel-hugemem 2.4.21-58.EL, kernel-unsupported 2.4.21-58.EL, +2 more
    fixed: vendor fix RHSA-2008:0973
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-78.EL, kernel-smp 2.6.9-78.EL, kernel-xenU 2.6.9-78.EL, kernel-hugemem 2.6.9-78.EL, kernel-largesmp 2.6.9-78.EL
    fixed: vendor fix RHSA-2008:0665

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

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns 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.