Answer in brief
CVE-2026-68401 records a Unknown severity vulnerability in firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit(). 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 | >=111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 <cf5708c9d78c98214c62b1e5d049cd527a543b8e || >=111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 <27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b || >=111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 <3383ffb7ef937317361713ffcc21921a7848511a || 28ebfb74fbf513e0c7cd2674d8c2400ee0220d18 || 22157f74458106c5900dbd938eb44623c22d97a0 || b77ec23b6df41c48e88735230e11caec56163630 || >=5.15.114 <5.16 || >=6.1.31 <6.2 || >=6.3.5 <6.4 | cf5708c9d78c98214c62b1e5d049cd527a543b8e, 27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b, 3383ffb7ef937317361713ffcc21921a7848511a, 5.16, 6.2, 6.4 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() Sashiko (locally) reports multiple out-of-bound issues in ffa_setup_and_transmit: 1) Writing ep_mem_access->reserved can write out of bounds for FFA versions < 1.2 as ffa_emad_size_get() returns 16 bytes in that case while reserved has an offset of 24. Instead of zeroing fields, memset the struct to zero first based on the FFA version. 2) Make sure there is enough size to write constituents. While at it, convert the only sizeof() in the driver that uses a type instead of variable.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68401 records a Unknown severity vulnerability in firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit(). 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 | >=111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 <cf5708c9d78c98214c62b1e5d049cd527a543b8e || >=111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 <27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b || >=111a833dc5cbef3d05b2a796a7e23cb7f6ff2192 <3383ffb7ef937317361713ffcc21921a7848511a || 28ebfb74fbf513e0c7cd2674d8c2400ee0220d18 || 22157f74458106c5900dbd938eb44623c22d97a0 || b77ec23b6df41c48e88735230e11caec56163630 || >=5.15.114 <5.16 || >=6.1.31 <6.2 || >=6.3.5 <6.4 | cf5708c9d78c98214c62b1e5d049cd527a543b8e, 27abdaf0c5c89b06694e4c3d8318e8d6a60c1d1b, 3383ffb7ef937317361713ffcc21921a7848511a, 5.16, 6.2, 6.4 |
| Linux/Linuxgeneric | 6.4 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Fix out-of-bound writes in ffa_setup_and_transmit() Sashiko (locally) reports multiple out-of-bound issues in ffa_setup_and_transmit: 1) Writing ep_mem_access->reserved can write out of bounds for FFA versions < 1.2 as ffa_emad_size_get() returns 16 bytes in that case while reserved has an offset of 24. Instead of zeroing fields, memset the struct to zero first based on the FFA version. 2) Make sure there is enough size to write constituents. While at it, convert the only sizeof() in the driver that uses a type instead of variable.
Quoted source text, attributed separately from HOL analysis.