kernel: unprivileged denial-of-service due to mis-protected xsave/xrstor instructions
Published May 2, 2016
5.5
MEDIUMCVSS 3.0
EPSS 0.36%
Description
The xsave/xrstor implementation in arch/x86/include/asm/xsave.h in the Linux kernel before 3.19.2 creates certain .altinstr_replacement pointers and consequently does not provide any protection against instruction faulting, which allows local users to cause a denial of service (panic) by triggering a fault, as demonstrated by an unaligned memory operand or a non-canonical address memory operand.
Affected products
No data.
- ≤ 3.19.1
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise MRG 2
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise MRG 2 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the Linux kernel packages as shipped with Red Hat Entereprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AV:L/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.36% (0.00365) | 28.00th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00365) | 28.14th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.11% (0.00110) | 27.02th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (8)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06c8173eb92bbfc03a0fe8bb64315857d0badd06 x_refsource_CONFIRMVendor Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.2 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2015/03/22/1 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2015-2672 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1204729 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/06c8173eb92bbfc03a0fe8bb64315857d0badd06 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-2672
- https://www.cve.org/CVERecord?id=CVE-2015-2672
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06c8173eb92bbfc03a0fe8bb64315857d0badd06 | x_refsource_CONFIRMVendor Advisory | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.2 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2015/03/22/1 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2015-2672 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1204729 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/06c8173eb92bbfc03a0fe8bb64315857d0badd06 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-2672 | ||
| https://www.cve.org/CVERecord?id=CVE-2015-2672 |
Change history (0)
No recorded changes yet.