Answer in brief
CVE-2026-43380 records a Unknown severity vulnerability in hwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read. 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.
Answer in brief
CVE-2026-43380 records a Unknown severity vulnerability in hwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read. 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 | >=d014538aa38561cd24c5eb228223585f26c5ec71 <a0fc1b9c738fba231f190ab960c83202722efee5 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <c59090c50f62a17129fc4c5407bc4071305a9e82 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <52db5ef163c96f916d424e472fb17aadc35a9f7a || >=d014538aa38561cd24c5eb228223585f26c5ec71 <b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b || >=d014538aa38561cd24c5eb228223585f26c5ec71 <73a7a345816946d276ad2c46c8bb771de67cfc46 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <24a7b9daa103fa963b3fd37d8805b23e01621976 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43 | a0fc1b9c738fba231f190ab960c83202722efee5, c59090c50f62a17129fc4c5407bc4071305a9e82, 52db5ef163c96f916d424e472fb17aadc35a9f7a, b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b, 73a7a345816946d276ad2c46c8bb771de67cfc46, 24a7b9daa103fa963b3fd37d8805b23e01621976, 25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43 |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
May 8, 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: hwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read The q54sj108a2_debugfs_read function suffers from a stack buffer overflow due to incorrect arguments passed to bin2hex(). The function currently passes 'data' as the destination and 'data_char' as the source. Because bin2hex() converts each input byte into two hex characters, a 32-byte block read results in 64 bytes of output. Since 'data' is only 34 bytes (I2C_SMBUS_BLOCK_MAX + 2), this writes 30 bytes past the end of the buffer onto the stack. Additionally, the arguments were swapped: it was reading from the zero-initialized 'data_char' and writing to 'data', resulting in all-zero output regardless of the actual I2C read. Fix this by: 1. Expanding 'data_char' to 66 bytes to safely hold the hex output. 2. Correcting the bin2hex() argument order and using the actual read count. 3. Using a pointer to select the correct output buffer for the final simple_read_from_buffer call.
Quoted source text, attributed separately from HOL analysis.
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 | >=d014538aa38561cd24c5eb228223585f26c5ec71 <a0fc1b9c738fba231f190ab960c83202722efee5 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <c59090c50f62a17129fc4c5407bc4071305a9e82 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <52db5ef163c96f916d424e472fb17aadc35a9f7a || >=d014538aa38561cd24c5eb228223585f26c5ec71 <b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b || >=d014538aa38561cd24c5eb228223585f26c5ec71 <73a7a345816946d276ad2c46c8bb771de67cfc46 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <24a7b9daa103fa963b3fd37d8805b23e01621976 || >=d014538aa38561cd24c5eb228223585f26c5ec71 <25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43 | a0fc1b9c738fba231f190ab960c83202722efee5, c59090c50f62a17129fc4c5407bc4071305a9e82, 52db5ef163c96f916d424e472fb17aadc35a9f7a, b48a0f8d4541a4f6651dc9a64430ce9fdf5c120b, 73a7a345816946d276ad2c46c8bb771de67cfc46, 24a7b9daa103fa963b3fd37d8805b23e01621976, 25dd70a03b1f5f3aa71e1a5091ecd9cd2a13ee43 |
| Linux/Linuxgeneric | 5.11 | Not reported |
Published upstream
May 8, 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: hwmon: (pmbus/q54sj108a2) fix stack overflow in debugfs read The q54sj108a2_debugfs_read function suffers from a stack buffer overflow due to incorrect arguments passed to bin2hex(). The function currently passes 'data' as the destination and 'data_char' as the source. Because bin2hex() converts each input byte into two hex characters, a 32-byte block read results in 64 bytes of output. Since 'data' is only 34 bytes (I2C_SMBUS_BLOCK_MAX + 2), this writes 30 bytes past the end of the buffer onto the stack. Additionally, the arguments were swapped: it was reading from the zero-initialized 'data_char' and writing to 'data', resulting in all-zero output regardless of the actual I2C read. Fix this by: 1. Expanding 'data_char' to 66 bytes to safely hold the hex output. 2. Correcting the bin2hex() argument order and using the actual read count. 3. Using a pointer to select the correct output buffer for the final simple_read_from_buffer call.
Quoted source text, attributed separately from HOL analysis.