CVE-2026-53016: crypto: ccp - copy IV using skcipher ivsize
Noroxi assessment
Priority: Monitor (action score 31/100)
- 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: 0.14% (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 227c1e1d9e2aa4cfc65ba446d5690da1f546cda4, 798d409a8949f3f495f238549b86de2886b129bd, 939061b2d0f7f15114e34b4ce878ef50ff4089c3.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 227c1e1d9e2aa4cfc65ba446d5690da1f546cda4, 798d409a8949f3f495f238549b86de2886b129bd, 939061b2d0f7f15114e34b4ce878ef50ff4089c3 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: crypto: ccp - copy IV using skcipher ivsize AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver. ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV buffer while RFC3686 skciphers expose an 8-byte IV, so the restore overruns the provided buffer. Use crypto_skcipher_ivsize() to copy only the algorithm's IV length.
- BDU:2026-13954
- ALSA-2026:38491
- ALSA-2026:39494
- ALSA-2026:55764
- ALSA-2026:55765
- RHSA-2026:38491
- RHSA-2026:39494
- RHSA-2026:55764
- RHSA-2026:55765
- RHSA-2026:56574
- RHSA-2026:59473
- RHSA-2026:59544
- RHSA-2026:61256
- RHSA-2026:64767
- RHSA-2026:65710
- RHSA-2026:67721
- RHSA-2026:67723
- RLSA-2026:38491
- RLSA-2026:39494
- RLSA-2026:55764
- Published
- Jun 24, 2026
- Updated
- Oct 25, 2026
- EPSS
- 0.1% · 3th percentile
- CWE
- CWE-787
Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 7.8
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
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.
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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 kernel3.14 and later · before 5.10.258
- linux linux kernel5.11 and later · before 5.15.209
- linux linux kernel5.16 and later · before 6.1.175
- linux linux kernel6.2 and later · before 6.6.141
- linux linux kernel6.7 and later · before 6.12.91
- linux linux kernel6.13 and later · before 6.18.33
- linux linux kernel6.19 and later · before 7.0.10
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
- 3.14affected
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before 939061b2d0f7f15114e34b4ce878ef50ff4089c3affected · git
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before 798d409a8949f3f495f238549b86de2886b129bdaffected · git
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before dfb2cf434829819268fe50f41542aad318ad62b2affected · git
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before eecee15e263ccb8cd77170a56ab6c969cb54dd6aaffected · git
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before bb01d8f1f385bc9034ca114d3508c7fdea24fc9aaffected · git
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before df9784bb5b637ac80f4a2768a58ca9a50bef28a9affected · git
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before 227c1e1d9e2aa4cfc65ba446d5690da1f546cda4affected · git
- 2b789435d7f36ed918d92db647f3a2f3fec9bb1f and later · before a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4affected · git
- before 3.14not affected · semver
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 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-core | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-core | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-devel | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-devel-matched | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-modules | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-modules-core | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-debug-modules-extra | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-devel | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-devel-matched | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-modules | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-modules-core | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-64k-modules-extra | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-abi-stablelists | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-core | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-cross-headers | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-debug | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-debug-core | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-debug-devel | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-debug-devel-matched | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-debug-modules | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
| AlmaLinux:10 | kernel-debug-modules-core | before 6.12.0-211.34.1.el10_2 | 6.12.0-211.34.1.el10_2 |
+96
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-2026-53012Jun 24, 2026 · nexthop: fix IPv6 route referencing IPv4 nexthop22Monitor
- ← EarlierCVE-2026-53015Jun 24, 2026 · erofs: unify lcn as u64 for 32-bit platforms22Monitor
- Later →CVE-2026-53017Jun 24, 2026 · f2fs: fix data loss caused by incorrect use of nat_entry flag22Monitor
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 | 227c1e1d9e2aa4cfc65ba446d5690da1f546cda4 | Vendor (CNA) |
| Linux Linux | 798d409a8949f3f495f238549b86de2886b129bd | Vendor (CNA) |
| Linux Linux | 939061b2d0f7f15114e34b4ce878ef50ff4089c3 | Vendor (CNA) |
| Linux Linux | a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4 | Vendor (CNA) |
| Linux Linux | bb01d8f1f385bc9034ca114d3508c7fdea24fc9a | Vendor (CNA) |
| Linux Linux | df9784bb5b637ac80f4a2768a58ca9a50bef28a9 | Vendor (CNA) |
| Linux Linux | dfb2cf434829819268fe50f41542aad318ad62b2 | Vendor (CNA) |
| Linux Linux | eecee15e263ccb8cd77170a56ab6c969cb54dd6a | Vendor (CNA) |
| almalinux:kernel | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-core | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-core | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-devel-matched | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-core | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-debug-modules-extra | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-64k-devel-matched | 5.14.0-687.25.1.el9_8 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.1.176-1 · Debian:12 | Package registry (OSV) |
| red hat:kernel-64k-debug-debuginfo | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debug-devel-matched | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-debuginfo | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-64k-devel-matched | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
| red hat:kernel-debug-devel-matched | 0:5.14.0-687.25.1.el9_8 · Red Hat:enterprise_linux:9::appstream | Package registry (OSV) |
+5
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-26-0440 · Jun 25, 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
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-787 · Out-of-bounds WriteCVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
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
- SSVC exploitation— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- git.kernel.org/stable/c/798d409a8949f3f495f238549b86de2886b129bd
- git.kernel.org/stable/c/939061b2d0f7f15114e34b4ce878ef50ff4089c3
- git.kernel.org/stable/c/a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4
- git.kernel.org/stable/c/bb01d8f1f385bc9034ca114d3508c7fdea24fc9a
- git.kernel.org/stable/c/df9784bb5b637ac80f4a2768a58ca9a50bef28a9
- git.kernel.org/stable/c/dfb2cf434829819268fe50f41542aad318ad62b2
- git.kernel.org/stable/c/eecee15e263ccb8cd77170a56ab6c969cb54dd6a
- access.redhat.com/errata/RHSA-2026:38491
- access.redhat.com/errata/RHSA-2026:39494
- access.redhat.com/errata/RHSA-2026:55764
- access.redhat.com/errata/RHSA-2026:55765
- access.redhat.com/errata/RHSA-2026:56574
- access.redhat.com/errata/RHSA-2026:59473
- access.redhat.com/errata/RHSA-2026:59544
- access.redhat.com/errata/RHSA-2026:61256
- access.redhat.com/errata/RHSA-2026:64767
- access.redhat.com/errata/RHSA-2026:65710
- access.redhat.com/errata/RHSA-2026:67721
- access.redhat.com/errata/RHSA-2026:67723
Vendor advisories and official records. Exploit/PoC links are deliberately left out.