Answer in brief
CVE-2026-53363 records a Unknown severity vulnerability in xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b96ba312e21c9b7ac1526829b9640ddc06695c0b <dd66f7f6e360ee82cd905517726f8e9091265de5 || >=b96ba312e21c9b7ac1526829b9640ddc06695c0b <c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c || >=b96ba312e21c9b7ac1526829b9640ddc06695c0b <e9096a5a170e7ecd6467bc2e08668ec39897cda7 | dd66f7f6e360ee82cd905517726f8e9091265de5, c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c, e9096a5a170e7ecd6467bc2e08668ec39897cda7 |
| Linux/Linuxgeneric | 6.14 | Not reported |
Published upstream
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 10, 2026
In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags() iptfs_consume_frags() transfers paged fragments from one socket buffer to another but fails to propagate the SKBFL_SHARED_FRAG flag. This is the same class of bug that was fixed in skb_try_coalesce() for CVE-2026-46300: when fragments backed by read-only page-cache pages are merged, the marker indicating their shared nature must be preserved so that ESP can decide correctly whether in-place encryption is safe. Apply the same two-line fix used in skb_try_coalesce() to iptfs_consume_frags().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-53363 records a Unknown severity vulnerability in xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b96ba312e21c9b7ac1526829b9640ddc06695c0b <dd66f7f6e360ee82cd905517726f8e9091265de5 || >=b96ba312e21c9b7ac1526829b9640ddc06695c0b <c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c || >=b96ba312e21c9b7ac1526829b9640ddc06695c0b <e9096a5a170e7ecd6467bc2e08668ec39897cda7 | dd66f7f6e360ee82cd905517726f8e9091265de5, c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c, e9096a5a170e7ecd6467bc2e08668ec39897cda7 |
| Linux/Linuxgeneric | 6.14 | Not reported |
Published upstream
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 10, 2026
In the Linux kernel, the following vulnerability has been resolved: xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags() iptfs_consume_frags() transfers paged fragments from one socket buffer to another but fails to propagate the SKBFL_SHARED_FRAG flag. This is the same class of bug that was fixed in skb_try_coalesce() for CVE-2026-46300: when fragments backed by read-only page-cache pages are merged, the marker indicating their shared nature must be preserved so that ESP can decide correctly whether in-place encryption is safe. Apply the same two-line fix used in skb_try_coalesce() to iptfs_consume_frags().
Quoted source text, attributed separately from HOL analysis.