In the Linux kernel through 4.19, a use-after-free can occur due to a race condition between fanout_add from setsockopt and bind on an AF_PA
In the Linux kernel through 4.19, a use-after-free can occur due to a race condition between fanout_add from setsockopt and bind on an AF_PACKET socket. This issue exists because of the 15fe076edea787807a7cdc168df832544b58eba6 incomplete fix for a race condition. The code mishandles a certain multithreaded case involving a packet_do_bind unregister action followed by a packet_notifier register action. Later, packet_release operates on only one of the two applicable linked lists. The attacker can achieve Program Counter control.
- Published
- Oct 22, 2018
- Updated
- Jun 16, 2026
- EPSS
- 2.6% · 85th percentile
- CWE
- CWE-362
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Report tools
Action score
33
Monitor
Low priority for now.
- CVSS
- 32 / 40 · 8.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.6%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| redhat | openshift container platform | cpe:2.3:a:redhat:openshift_container_platform |
| redhat | virtualization host | cpe:2.3:a:redhat:virtualization_host |
| redhat | enterprise linux desktop | cpe:2.3:o:redhat:enterprise_linux_desktop |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux server aus | cpe:2.3:o:redhat:enterprise_linux_server_aus |
| redhat | enterprise linux server eus | cpe:2.3:o:redhat:enterprise_linux_server_eus |
| redhat | enterprise linux server tus | cpe:2.3:o:redhat:enterprise_linux_server_tus |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel3.2.95 and later · before 3.2.100
- linux linux kernel3.14.58 and later · before 3.15
- linux linux kernel3.18.25 and later · before 3.18.88
- linux linux kernel4.1.14 and later · before 4.1.49
- linux linux kernel4.2.7 and later · before 4.3
- linux linux kernel4.3.1 and later · before 4.4.106
- linux linux kernel4.5 and later · before 4.9.70
- linux linux kernel4.10 and later · before 4.14.7
- redhat enterprise linux desktop7.0
- redhat enterprise linux server7.0
- redhat enterprise linux server aus7.6
- redhat enterprise linux server eus7.6
- redhat enterprise linux server tus7.6
- redhat enterprise linux workstation7.0
- redhat openshift container platform3.11
- redhat virtualization host4.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 4.14.7-1 | 4.14.7-1 |
| Red Hat:enterprise_linux:7::client | bpftool | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-abi-whitelists | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debug | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debug-debuginfo | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debug-devel | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debuginfo | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-debuginfo-common-x86_64 | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-devel | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-doc | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-headers | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools-debuginfo | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools-libs | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | kernel-tools-libs-devel | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | perf | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | perf-debuginfo | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | python-perf | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::client | python-perf-debuginfo | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
| Red Hat:enterprise_linux:7::server | kernel | before 0:4.14.0-115.17.1.el7a | 0:4.14.0-115.17.1.el7a |
| Red Hat:enterprise_linux:7::server | kernel-abi-whitelists | before 0:4.14.0-115.17.1.el7a | 0:4.14.0-115.17.1.el7a |
| Red Hat:enterprise_linux:7::server | kernel-alt | before 0:4.14.0-115.17.1.el7a | 0:4.14.0-115.17.1.el7a |
| Red Hat:enterprise_linux:7::server | kernel-bootwrapper | before 0:3.10.0-957.5.1.el7 | 0:3.10.0-957.5.1.el7 |
+96
Same product
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- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
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Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:linux | 4.14.7-1 · Debian:12 | Package registry (OSV) |
| red hat:bpftool | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-x86_64 | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-devel | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-doc | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-headers | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-tools | 0:3.10.0-957.5.1.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- access.redhat.com/errata/RHBA-2019:0327
- access.redhat.com/errata/RHSA-2019:0163
- access.redhat.com/errata/RHSA-2019:0188
- access.redhat.com/errata/RHSA-2019:1170
- access.redhat.com/errata/RHSA-2019:1190
- access.redhat.com/errata/RHSA-2019:3967
- access.redhat.com/errata/RHSA-2019:4159
- access.redhat.com/errata/RHSA-2020:0174
Vendor advisories and official records. Exploit/PoC links are deliberately left out.