CVE-2010-2524 json
The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, reli…
published 16y ago modified 4mo ago also EUVD-2010-2528
- 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 36%
- public exploits
- 0
- none known
Summary
The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled, relies on a user's keyring for the dns_resolver upcall in the cifs.upcall userspace helper, which allows local users to spoof the results of DNS queries and perform arbitrary CIFS mounts via vectors involving an add_key call, related to a "cache stuffing" issue and MS-DFS referrals.
Patch / fix
- linux linux_kernel 2.6.35
- kernel RHEL 5 2.6.18-194.11.1.el5
- kernel-PAE RHEL 5 2.6.18-194.11.1.el5
- kernel-xen RHEL 5 2.6.18-194.11.1.el5
- kernel-kdump RHEL 5 2.6.18-194.11.1.el5
- kernel-debuginfo-common RHEL 5 2.6.18-194.11.1.el5
red hat advisories RHSA-2010:0610
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Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2010-2524 updated cvss 4.4
kernel: dns_resolver upcall security issue
-
Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-194.11.1.el5, kernel-PAE 2.6.18-194.11.1.el5, kernel-xen 2.6.18-194.11.1.el5, kernel-kdump 2.6.18-194.11.1.el5, kernel-debuginfo-common 2.6.18-194.11.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-194.11.1.el5, kernel-PAE 2.6.18-194.11.1.el5, kernel-xen 2.6.18-194.11.1.el5, kernel-kdump 2.6.18-194.11.1.el5, kernel-debuginfo-common 2.6.18-194.11.1.el5fixed: vendor fix RHSA-2010:0610
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
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Technology feeds
References
-
marc.info
/?l=oss-security&m=128078387328921&w=2
mailing-list, patch, third-party-advisory
-
marc.info
/?l=oss-security&m=128072090331700&w=2
mailing-list, patch, third-party-advisory
-
vmware.com
/security/advisories/VMSA-2011-0003.html
patch, third-party-advisory
-
bugzilla.redhat.com
/show_bug.cgi?id=612166
issue-tracking, patch, third-party-advisory
-
redhat.com
/support/errata/RHSA-2010-0610.html
vendor-advisory, broken-link
-
ubuntu.com
/usn/USN-1000-1
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2010-09/msg00004.html
vendor-advisory, mailing-list, third-party-advisory
-
mandriva.com
/security/advisories?name=MDVSA-2010:172
vendor-advisory, broken-link
-
kernel.org
/pub/linux/kernel/v2.6/ChangeLog-2.6.35
broken-link
-
secunia.com
/advisories/43315
third-party-advisory, broken-link
-
securityfocus.com
/archive/1/516397/100/0/threaded
mailing-list, third-party-advisory, vdb-entry
- git.kernel.org /?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4c0c03ca54f72fdd5912516ad0a23ec5cf01bda7
-
marc.info
/?l=oss-security&m=128080755321157&w=2
mailing-list, third-party-advisory
Sources
- CVE List CVE-2010-2524
- NVD CVE-2010-2524
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.