CVE-2026-43419: ceph: fix memory leaks in ceph_mdsc_build_path()
Noroxi assessment
Priority: Monitor (action score 22/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.12% (FIRST EPSS).
- 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.
- Fixed version: Linux Linux 040d159a45ded7f33201421a81df0aa2a86e5a0b, 097cd68f46686391a98f2618188f0cb7b7570de2, 13b8b9d6f59ef17fb96c298c3a0d62a8306950cc.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 040d159a45ded7f33201421a81df0aa2a86e5a0b, 097cd68f46686391a98f2618188f0cb7b7570de2, 13b8b9d6f59ef17fb96c298c3a0d62a8306950cc or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: ceph: fix memory leaks in ceph_mdsc_build_path() Add __putname() calls to error code paths that did not free the "path" pointer obtained by __getname(). If ownership of this pointer is not passed to the caller via path_info.path, the function must free it before returning.
- Published
- May 8, 2026
- Updated
- Nov 11, 2026
- EPSS
- 0.1% · 2th percentile
- CWE
- CWE-401
Report tools
Action score
22
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
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
- 0f2b2d9e881c90402dbe28f9ba831775b7992e1f, d42ad3f161a5a487f81915c406f46943c7187a0a, 6.6affected
- e4b168c64da06954be5d520f6c16469b1cadc069 and later · before d39366c169f873edc8ad21fdf6bf08d1de603dbbaffected · git
- 3fd945a79e147ee10f84213976889b29049c3519 and later · before 657dc653b06a3cc0282aea447a3f137fa94066a4affected · git
- 3fd945a79e147ee10f84213976889b29049c3519 and later · before 5895d0164c84d7fec6abc198920c257f55c51899affected · git
- 3fd945a79e147ee10f84213976889b29049c3519 and later · before 097cd68f46686391a98f2618188f0cb7b7570de2affected · git
- 3fd945a79e147ee10f84213976889b29049c3519 and later · before 13b8b9d6f59ef17fb96c298c3a0d62a8306950ccaffected · git
- 3fd945a79e147ee10f84213976889b29049c3519 and later · before 040d159a45ded7f33201421a81df0aa2a86e5a0baffected · git
- 6.1.125 and later · before 6.1.191affected · semver
- 5.10.234 and later · before 5.11affected · semver
- 5.15.177 and later · before 5.16affected · semver
Affected versions · NVD (8)
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel5.10.234 and later · before 5.11
- linux linux kernel5.15.177 and later · before 5.16
- linux linux kernel6.1.125 and later · before 6.2
- linux linux kernel6.6 and later · before 6.6.130
- linux linux kernel6.7 and later · before 6.12.78
- linux linux kernel6.13 and later · before 6.18.19
- linux linux kernel6.19 and later · before 6.19.9
- linux linux kernel7.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:10 | kernel | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-core | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-core | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-devel | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-devel-matched | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-modules | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-modules-core | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-modules-extra | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-devel | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-devel-matched | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-modules | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-modules-core | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-64k-modules-extra | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-abi-stablelists | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-core | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-cross-headers | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-debug | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-debug-core | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-debug-devel | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-debug-devel-matched | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-debug-modules | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
| AlmaLinux:10 | kernel-debug-modules-core | before 6.12.0-211.50.1.el10_2 | 6.12.0-211.50.1.el10_2 |
+55
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- 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
Published before and after this one in the same product
- ← EarlierCVE-2026-43417May 8, 2026 · sched/mmcid: Handle vfork()/CLONE_VM correctly22Monitor
- ← EarlierCVE-2026-43418May 8, 2026 · sched/mmcid: Prevent CID stalls due to concurrent forks22Monitor
- Later →CVE-2026-43420May 8, 2026 · ceph: fix i_nlink underrun during async unlink18Monitor
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 | 040d159a45ded7f33201421a81df0aa2a86e5a0b | Vendor (CNA) |
| Linux Linux | 097cd68f46686391a98f2618188f0cb7b7570de2 | Vendor (CNA) |
| Linux Linux | 13b8b9d6f59ef17fb96c298c3a0d62a8306950cc | Vendor (CNA) |
| Linux Linux | 5.11 | Vendor (CNA) |
| Linux Linux | 5.16 | Vendor (CNA) |
| Linux Linux | 5895d0164c84d7fec6abc198920c257f55c51899 | Vendor (CNA) |
| Linux Linux | 6.1.191 | Vendor (CNA) |
| Linux Linux | 657dc653b06a3cc0282aea447a3f137fa94066a4 | Vendor (CNA) |
| Linux Linux | d39366c169f873edc8ad21fdf6bf08d1de603dbb | Vendor (CNA) |
| almalinux:kernel | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-core | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-debug | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-debug-core | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel-matched | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-core | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-extra | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-devel | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| almalinux:kernel-64k-devel-matched | 6.12.0-211.50.1.el10_2 · AlmaLinux:10 | Package registry (OSV) |
| debian:linux | 6.12.85-1 · Debian:13 | Package registry (OSV) |
| suse:cephfs | 1.0-150700.15.7.1 · SUSE:Linux Enterprise Module for Legacy 15 SP7 | 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.
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-0213 · May 12, 2026(Linux Kernel Güvenlik Bildirimi)
Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
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.
Change log (2)
- SSVC exploitation— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (5 more)Show less
- git.kernel.org/stable/c/097cd68f46686391a98f2618188f0cb7b7570de2
- git.kernel.org/stable/c/13b8b9d6f59ef17fb96c298c3a0d62a8306950cc
- git.kernel.org/stable/c/5895d0164c84d7fec6abc198920c257f55c51899
- git.kernel.org/stable/c/657dc653b06a3cc0282aea447a3f137fa94066a4
- git.kernel.org/stable/c/d39366c169f873edc8ad21fdf6bf08d1de603dbb
Vendor advisories and official records. Exploit/PoC links are deliberately left out.