CVE-2026-43124: pstore: ram_core: fix incorrect success return when vmap() fails
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 05363abc7625cf18c96e67f50673cd07f11da5e9, 1da904e84de608907662ad8a51ba9c571d61e003, 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 05363abc7625cf18c96e67f50673cd07f11da5e9, 1da904e84de608907662ad8a51ba9c571d61e003, 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb 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: pstore: ram_core: fix incorrect success return when vmap() fails In persistent_ram_vmap(), vmap() may return NULL on failure. If offset is non-zero, adding offset_in_page(start) causes the function to return a non-NULL pointer even though the mapping failed. persistent_ram_buffer_map() therefore incorrectly returns success. Subsequent access to prz->buffer may dereference an invalid address and cause crashes. Add proper NULL checking for vmap() failures.
- Published
- May 6, 2026
- Updated
- Jun 17, 2026
- EPSS
- 0.1% · 2th percentile
- CWE
- CWE-476
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 · 0.1%
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.
Running WordPress? Scan your site free with WP Lens
Noroxi 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 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel3.16.62 and later · before 5.10.252
- linux linux kernel5.11 and later · before 5.15.202
- linux linux kernel5.16 and later · before 6.1.165
- linux linux kernel6.2 and later · before 6.6.128
- linux linux kernel6.7 and later · before 6.12.75
- linux linux kernel6.13 and later · before 6.18.16
- linux linux kernel6.19 and later · before 6.19.6
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
- 9095f19baae92afb978f8df77d19280fe291b337, 36a9916189b46b78dbf4fa542739b464444f0537, 1cd01dba1355e291f636555b1920625ed58c1623, 7026e2457c5b0c0e8a81e65a8209b8420a437b4d, 1e5b387747ba285a64348b9a96b246d0b9d52b03, d0028f48b33086cf6d8f87831a650866107b5785, 4.19affected
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before d47234840aeb4182ed3ee795c578b1dfa9cbd25baffected · git
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before 49918dd52615097529811d21ec6074dd02ebe77caffected · git
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before 8baa234181f632cabacf73e4834a910859e9fcc9affected · git
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before 1da904e84de608907662ad8a51ba9c571d61e003affected · git
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before 8d849adfbc3e98417fb541620568db1a759ef441affected · git
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before 2c99326dc1c79b7ce3c8dd92929b5ce724ff70ebaffected · git
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before 88d5b28f63c7aac1271784e3b800ed405d1cde75affected · git
- 831b624df1b420c8f9281ed1307a8db23afb72df and later · before 05363abc7625cf18c96e67f50673cd07f11da5e9affected · git
- 3.16.62 and later · before 3.17affected · 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 6.1.170-1 | 6.1.170-1 |
| Debian:13 | linux | before 6.12.85-1 | 6.12.85-1 |
| Debian:14 | linux | before 6.19.6-1 | 6.19.6-1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kernel-default | before 4.12.14-122.323.1 | 4.12.14-122.323.1 |
| SUSE:Linux Enterprise Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_86 | before 1-8.3.1 | 1-8.3.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-source | before 4.12.14-122.323.1 | 4.12.14-122.323.1 |
| SUSE:Linux Enterprise Server 12 SP5-LTSS | kernel-syms | before 4.12.14-122.323.1 | 4.12.14-122.323.1 |
| SUSE:Linux Micro 6.0 | kernel-default | before 6.4.0-50.1 | 6.4.0-50.1 |
| SUSE:Linux Micro 6.0 | kernel-kvmsmall | before 6.4.0-50.1 | 6.4.0-50.1 |
| SUSE:Linux Micro 6.0 | kernel-rt | before 6.4.0-50.1 | 6.4.0-50.1 |
| SUSE:Linux Micro 6.0 | kernel-source | before 6.4.0-50.2 | 6.4.0-50.2 |
| SUSE:Linux Micro 6.0 | kernel-source-rt | before 6.4.0-50.2 | 6.4.0-50.2 |
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-2026-43121May 6, 2026 · io_uring/zcrx: fix user_ref race between scrub and refill paths18Monitor
- ← EarlierCVE-2026-43123May 6, 2026 · fbcon: check return value of con2fb_acquire_newinfo()22Monitor
- Later →CVE-2026-43130May 6, 2026 · iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode22Monitor
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 | 05363abc7625cf18c96e67f50673cd07f11da5e9 | Vendor (CNA) |
| Linux Linux | 1da904e84de608907662ad8a51ba9c571d61e003 | Vendor (CNA) |
| Linux Linux | 2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb | Vendor (CNA) |
| Linux Linux | 3.17 | Vendor (CNA) |
| Linux Linux | 3.19 | Vendor (CNA) |
| Linux Linux | 4.10 | Vendor (CNA) |
| Linux Linux | 4.15 | Vendor (CNA) |
| Linux Linux | 4.19 | Vendor (CNA) |
| Linux Linux | 4.5 | Vendor (CNA) |
| Linux Linux | 49918dd52615097529811d21ec6074dd02ebe77c | Vendor (CNA) |
| Linux Linux | 88d5b28f63c7aac1271784e3b800ed405d1cde75 | Vendor (CNA) |
| Linux Linux | 8baa234181f632cabacf73e4834a910859e9fcc9 | Vendor (CNA) |
| Linux Linux | 8d849adfbc3e98417fb541620568db1a759ef441 | Vendor (CNA) |
| Linux Linux | d47234840aeb4182ed3ee795c578b1dfa9cbd25b | Vendor (CNA) |
| debian:linux | 6.1.170-1 · Debian:12 | Package registry (OSV) |
| suse:kernel-default | 6.4.0-50.1 · SUSE:Linux Micro 6.0 | Package registry (OSV) |
| suse:kernel-kvmsmall | 6.4.0-50.1 · SUSE:Linux Micro 6.0 | Package registry (OSV) |
| suse:kernel-rt | 6.4.0-50.1 · SUSE:Linux Micro 6.0 | Package registry (OSV) |
| suse:kernel-source | 6.4.0-50.2 · SUSE:Linux Micro 6.0 | Package registry (OSV) |
| suse:kernel-source-rt | 6.4.0-50.2 · SUSE:Linux Micro 6.0 | Package registry (OSV) |
| suse:kernel-syms | 4.12.14-122.323.1 · SUSE:Linux Enterprise Server 12 SP5-LTSS | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP5_Update_86 | 1-8.3.1 · SUSE:Linux Enterprise Live Patching 12 SP5 | 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.
No history yet (it accumulates with the daily EPSS job).
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).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-0196 · May 8, 2026(Linux Kernel Güvenlik Bildirimi)
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-476 · NULL Pointer DereferenceCVSS 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
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/1da904e84de608907662ad8a51ba9c571d61e003
- git.kernel.org/stable/c/2c99326dc1c79b7ce3c8dd92929b5ce724ff70eb
- git.kernel.org/stable/c/49918dd52615097529811d21ec6074dd02ebe77c
- git.kernel.org/stable/c/88d5b28f63c7aac1271784e3b800ed405d1cde75
- git.kernel.org/stable/c/8baa234181f632cabacf73e4834a910859e9fcc9
- git.kernel.org/stable/c/8d849adfbc3e98417fb541620568db1a759ef441
- git.kernel.org/stable/c/d47234840aeb4182ed3ee795c578b1dfa9cbd25b
Vendor advisories and official records. Exploit/PoC links are deliberately left out.