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CVE-2015-8952
The mbcache feature in the ext2 and ext4 filesystem implementations in the Linux kernel before 4.6 mishandles xattr block caching, which…
Medium5.5EPSS 0.45%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The mbcache feature in the ext2 and ext4 filesystem implementations in the Linux kernel before 4.6 mishandles xattr block caching, which allows local users to cause a denial of service (soft lockup) via filesystem operations in environments that use many attributes, as demonstrated by Ceph and Samba.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.45% · top 61% of all CVEs (3 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
n/a
- affected n/a
References (13)
- https://bugzilla.redhat.com/show_bug.cgi?id=1360968 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/torvalds/linux/commit/f9a61eb4e2471c56a63cd804c7474128138c38ac (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/torvalds/linux/commit/82939d7999dfc1f1998c4b1c12e2f19edbdff272 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-3582-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://bugzilla.kernel.org/show_bug.cgi?id=107301 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20160825 Re: CVE request: Linux kernel mbcache lock contention denial of service. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82939d7999dfc1f1998c4b1c12e2f19edbdff272 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=be0726d33cb8f411945884664924bed3cb8c70ee (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20160822 CVE request: Linux kernel mbcache lock contention denial of service. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://github.com/torvalds/linux/commit/be0726d33cb8f411945884664924bed3cb8c70ee (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9a61eb4e2471c56a63cd804c7474128138c38ac (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://lwn.net/Articles/668718/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-3582-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_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)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2015-8952)Record last updated .