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CVE Record

CVE-2025-22107: net: dsa: sja1105: fix kasan out-of-bounds warning in sja1105_table_delete_entry()

In the Linux kernel, the following vulnerability has been resolved: net: dsa: sja1105: fix kasan out-of-bounds warning in sja1105_table_delete_entry() There are actually 2 problems: - deleting the last element doesn't require the memmove of elements [i + 1, end) over it. Actually, element i+1 is out of bounds. - The memmove itself should move size - i - 1 elements, because the last element is out of bounds. The out-of-bounds element still remains out of bounds after being accessed, so the problem is only that we touch it, not that it becomes in active use. But I suppose it can lead to issues if the out-of-bounds element is part of an unmapped page.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2025-22107 is a Linux kernel issue in the SJA1105 Ethernet switch driver. Deleting a table entry can touch memory just outside the valid table. The public record says the issue is resolved, but gives no CVSS score and no active exploitation evidence. Prioritize systems using this driver or vendor products referencing this CVE.

Executive priority

Treat as targeted operational risk, not broad emergency risk. Prioritize asset owners running Linux-based network or industrial devices, especially where Siemens or SJA1105-based platforms are present. Escalate if a vendor advisory confirms exposure in critical systems.

Technical view

The bug is in sja1105_table_delete_entry(). The deletion path can memmove from element i+1 when i is the last entry, and can move one element too many. The source notes the out-of-bounds element is touched, not put into active use, but it could cause issues if it falls on an unmapped page.

Likely exposure

Exposure appears limited to Linux systems with the SJA1105 DSA switch driver in use, commonly embedded or networking-oriented builds. Siemens references this CVE, but the provided bundle does not identify specific Siemens affected products.

Exploitation context

The bundle does not show CISA KEV listing, public exploitation, exploit code, or a demonstrated attack path. The described impact is an out-of-bounds memory access detected by KASAN, with possible reliability impact if the access reaches unmapped memory.

Researcher notes

Evidence is limited to the CVE record, Linux stable commit references, and a Siemens advisory URL. No CVSS, CWE, exploitability assessment, or complete product matrix is provided. Avoid assuming impact beyond the described out-of-bounds access in the SJA1105 driver.

Mitigation direction

  • Identify Linux kernels using the sja1105 DSA driver.
  • Apply vendor or Linux stable kernel updates containing the referenced fixes.
  • Check Siemens advisory SSA-019113 for product-specific guidance.
  • Prioritize embedded, industrial, and network devices using affected kernels.
  • Track distribution advisories for backported fixes.

Validation and detection

  • Inventory kernel versions and enabled DSA drivers.
  • Confirm whether the sja1105 module or built-in driver is present.
  • Map kernel builds against the CVE record and stable commit references.
  • Review vendor advisories for affected product confirmation.
  • After updating, verify the kernel includes the referenced stable fix.
Prepared
Confidence
medium
Sources
10

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2025-22107 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
1ADP providers
9Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux6666cebc5e306f49a25bd20aa8c1cb8ef8950df5, 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5, 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5, 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5, 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5, 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5, 6666cebc5e306f49a25bd20aa8c1cb8ef8950df5unaffected
LinuxLinux5.2, 0, 5.10.258, 5.15.209, 6.1.160, 6.6.120, 6.12.59, 6.14.2, 6.15affected
Weakness

CWE details

No CWE listed

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