netfilter: ebtables: fix memory leak when blob is malformed
In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: fix memory leak when blob is malformed The bug fix was incomplete, it "replaced" crash with a memory leak. The old code had an assignment to "ret" embedded into the conditional, restore this.
- Published
- Apr 28, 2024
- Updated
- Jun 17, 2026
- EPSS
- 0.2% · 13th percentile
- CWE
- CWE-401
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Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel4.14.292 and later · before 4.14.295
- linux linux kernel4.19.257 and later · before 4.19.260
- linux linux kernel5.4.212 and later · before 5.4.215
- linux linux kernel5.10.140 and later · before 5.10.146
- linux linux kernel5.15.64 and later · before 5.15.71
- linux linux kernel5.19.6 and later · before 5.19.12
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- afd01382594d643e1adeb16826423b418cdf8b8b and later · before 754e8b74281dd54a324698803483f47cf3355ae1affected · git
- 358765beb836f5fc2ed26b5df4140d5d3548ac11 and later · before 1e98318af2f163eadaff815abcef38d27ca92c1eaffected · git
- 160c4eb47db03b96c0c425358e7595ebefe8094d and later · before 11ebf32fde46572b0aaf3c2bdd97d923ef5a03abaffected · git
- 624c30521233e110cf50ba01980a591e045036ae and later · before ebd97dbe3c55d68346b9c5fb00634a7f5b10bbeeaffected · git
- 1b2c5428f773d60c116c7b1e390432e0cfb63cd6 and later · before d5917b7af7cae0e2804f9d127a03268035098b7faffected · git
- e53cfa017bf4575d0b948a8f45313ef66d897136 and later · before 38cf372b17f0a5f35c1b716a100532d539f0eb33affected · git
- 7997eff82828304b780dc0a39707e1946d6f1ebf and later · before 62ce44c4fff947eebdf10bb582267e686e6835c9affected · git
- 4.14.292 and later · before 4.14.295affected · semver
- 4.19.257 and later · before 4.19.260affected · semver
- 5.4.212 and later · before 5.4.215affected · semver
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 6.0.2-1 | 6.0.2-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- 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
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
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 |
|---|---|---|
| Linux Linux | 11ebf32fde46572b0aaf3c2bdd97d923ef5a03ab | Vendor (CNA) |
| Linux Linux | 1e98318af2f163eadaff815abcef38d27ca92c1e | Vendor (CNA) |
| Linux Linux | 38cf372b17f0a5f35c1b716a100532d539f0eb33 | Vendor (CNA) |
| Linux Linux | 4.14.295 | Vendor (CNA) |
| Linux Linux | 4.19.260 | Vendor (CNA) |
| Linux Linux | 5.10.146 | Vendor (CNA) |
| Linux Linux | 5.15.71 | Vendor (CNA) |
| Linux Linux | 5.19.12 | Vendor (CNA) |
| Linux Linux | 5.4.215 | Vendor (CNA) |
| Linux Linux | 62ce44c4fff947eebdf10bb582267e686e6835c9 | Vendor (CNA) |
| Linux Linux | 754e8b74281dd54a324698803483f47cf3355ae1 | Vendor (CNA) |
| Linux Linux | d5917b7af7cae0e2804f9d127a03268035098b7f | Vendor (CNA) |
| Linux Linux | ebd97dbe3c55d68346b9c5fb00634a7f5b10bbee | Vendor (CNA) |
| debian:linux | 6.0.2-1 · Debian:12 | 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
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-401 · Missing Release of Memory after Effective LifetimeCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
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
- git.kernel.org/stable/c/11ebf32fde46572b0aaf3c2bdd97d923ef5a03ab
- git.kernel.org/stable/c/1e98318af2f163eadaff815abcef38d27ca92c1e
- git.kernel.org/stable/c/38cf372b17f0a5f35c1b716a100532d539f0eb33
- git.kernel.org/stable/c/62ce44c4fff947eebdf10bb582267e686e6835c9
- git.kernel.org/stable/c/754e8b74281dd54a324698803483f47cf3355ae1
- git.kernel.org/stable/c/d5917b7af7cae0e2804f9d127a03268035098b7f
- git.kernel.org/stable/c/ebd97dbe3c55d68346b9c5fb00634a7f5b10bbee
Vendor advisories and official records. Exploit/PoC links are deliberately left out.