CVE-2010-2524
The DNS resolution functionality in the CIFS implementation in the Linux kernel before 2.6.35, when CONFIG_CIFS_DFS_UPCALL is enabled,…
- 7.8HighCVSS base score
- 0.42%Exploitation in 30 daysEPSS · top 63% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By redhat
- 2 months later
· 2 months later
Published
- 14 years later
· 14 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.42% · top 63% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected n/a
References
References13
- RHSA-2010:0610 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-1000-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [oss-security] 20100802 Re: CVE-2010-2524 kernel: dns_resolver upcall security issue (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- SUSE-SA:2010:040 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 43315 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [oss-security] 20100802 CVE-2010-2524 kernel: dns_resolver upcall security issue (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://www.vmware.com/security/advisories/VMSA-2011-0003.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=612166 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20110211 VMSA-2011-0003 Third party component updates for VMware vCenter Server, vCenter Update Manager, ESXi and ESX (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4c0c03ca54f72fdd5912516ad0a23ec5cf01bda7 (opens in a new tab)x_refsource_CONFIRMx_transferred
- MDVSA-2010:172 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- [oss-security] 20100803 Re: CVE-2010-2524 kernel: dns_resolver upcall security issue (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2010-2528 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2010-2524)Record last updated .