kernel: Crafted BPF filters may crash kernel during JIT optimisation
Published Aug 31, 2015
4.9
MEDIUMCVSS 2.0
EPSS 0.45%
Description
The bpf_int_jit_compile function in arch/x86/net/bpf_jit_comp.c in the Linux kernel before 4.0.6 allows local users to cause a denial of service (system crash) by creating a packet filter and then loading crafted BPF instructions that trigger late convergence by the JIT compiler.
Affected products
No data.
- ≤ 4.0.5
No data.
Red Hat Enterprise Linux 7
kernel-0:3.10.0-229.14.1.ael7b
Fixed · RHSA-2015:1778
Red Hat Enterprise Linux 7
kernel-rt-0:3.10.0-229.14.1.rt56.141.13.el7_1
Fixed · RHSA-2015:1788
Red Hat Enterprise Linux 4
kernel
Not affected
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | kernel-0:3.10.0-229.14.1.ael7b | Fixed | RHSA-2015:1778 |
| Red Hat Enterprise Linux 7 | kernel-rt-0:3.10.0-229.14.1.rt56.141.13.el7_1 | Fixed | RHSA-2015:1788 |
| Red Hat Enterprise Linux 4 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the Linux kernels as shipped with Red Hat Enterprise Linux 5 and 6 as it does not contain the affected code. This does not affect the Red Hat Enterprise MRG 2 as it does not enable the affected code at compile time. This issue affects the Linux kernels as shipped with Red Hat Enterprise Linux 7.
Red Hat mitigation
This issue does not affect most systems by default. An administrator would need to have enabled the BPF JIT to be affected. It can be disabled immediately with the command: # echo 0 > /proc/sys/net/core/bpf_jit_enable Or it can be disabled for all subsequent boots of the system by setting a value in /etc/sysctl.d/44-bpf-jit-disable ## start file ## net.core.bpf_jit_enable=0 ## end file ##
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
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 2, 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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.45% (0.00451) | 36.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.45% (0.00451) | 35.63th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00184) | 37.95th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00044) | 11.89th | v3 (v2023.03.01) |
| Jul 2, 2024 | 0.04% (0.00044) | 10.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00044) | 8.24th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.55% (0.01547) | 74.98th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.55% (0.01547) | 74.94th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.55% (0.01547) | 72.92th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.55% (0.01547) | 51.82th | v2 (v2022.01.01) |
References (29)
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3f7352bf21f8fd7ba3e2fcef9488756f188e12be x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00004.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00007.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00008.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00009.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00010.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00011.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1778.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3329 vendor-advisoryx_refsource_DEBIAN
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.0.6 x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2015/06/23/2 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/75356 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033046 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2679-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2680-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2681-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2683-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2684-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-4700 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1233615 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/3f7352bf21f8fd7ba3e2fcef9488756f188e12be x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2015-4700
- https://support.f5.com/csp/article/K05211147 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2015-4700
Change history (0)
No recorded changes yet.