Answer in brief
CVE-2026-64414 records a Unknown severity vulnerability in netfilter: handle unreadable 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 | >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <3b13e7635795394705920cca1e1db7e4ca2e334b || >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <fc5bfe63bacf8a3ae307b62b34206406ca733354 || >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <57056be3ec12e7d9ecd20a60d4060f510e4f284c || >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <da5b58478a9c1b85608c9e40a3b8432d071b409e | 3b13e7635795394705920cca1e1db7e4ca2e334b, fc5bfe63bacf8a3ae307b62b34206406ca733354, 57056be3ec12e7d9ecd20a60d4060f510e4f284c, da5b58478a9c1b85608c9e40a3b8432d071b409e |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: handle unreadable frags sashiko reports: When an skb with unreadable fragments (such as from devmem TCP, where skb_frags_readable(skb) returns false) is processed by the u32 module, skb_copy_bits() will safely return a negative error code [..] xt_u32: bail out with hotdrop in this case. gather_frags: return -1, just as if we had no fragment header. nfnetlink_queue: restrict to the linear part. nfnetlink_log: restrict to the linear part. v2: - skb_zerocopy helpers don't copy readable flag, i.e. nfnetlink_queue is broken too xt_u32 shouldn't return true if hotdrop was set.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64414 records a Unknown severity vulnerability in netfilter: handle unreadable 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 | >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <3b13e7635795394705920cca1e1db7e4ca2e334b || >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <fc5bfe63bacf8a3ae307b62b34206406ca733354 || >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <57056be3ec12e7d9ecd20a60d4060f510e4f284c || >=65249feb6b3df9e17bab5911ee56fa7b0971e231 <da5b58478a9c1b85608c9e40a3b8432d071b409e | 3b13e7635795394705920cca1e1db7e4ca2e334b, fc5bfe63bacf8a3ae307b62b34206406ca733354, 57056be3ec12e7d9ecd20a60d4060f510e4f284c, da5b58478a9c1b85608c9e40a3b8432d071b409e |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Jul 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: netfilter: handle unreadable frags sashiko reports: When an skb with unreadable fragments (such as from devmem TCP, where skb_frags_readable(skb) returns false) is processed by the u32 module, skb_copy_bits() will safely return a negative error code [..] xt_u32: bail out with hotdrop in this case. gather_frags: return -1, just as if we had no fragment header. nfnetlink_queue: restrict to the linear part. nfnetlink_log: restrict to the linear part. v2: - skb_zerocopy helpers don't copy readable flag, i.e. nfnetlink_queue is broken too xt_u32 shouldn't return true if hotdrop was set.
Quoted source text, attributed separately from HOL analysis.