Answer in brief
CVE-2023-53331 records a Unknown severity vulnerability in pstore/ram: Check start of empty przs during init. 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-2023-53331 records a Unknown severity vulnerability in pstore/ram: Check start of empty przs during init. 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 | >=e1e3a46706bd4037e8b7407dc660ae6e05b8ac56 <89312657337e6e03ad6e9ea1a462bd9c158c85c8 || >=265242d82a3c6a8bd9120d06b4801f8d7ae9a346 <c807ccdd812d18985860504b503899f3140a9549 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <e972231db29b5d1dccc13bf9d5ba55b6979a69ed || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <dc2f60de9a7d3efd982440117dab5579898d808c || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <fedecaeef88899d940b69368c996e8b3b0b8650d || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <e95d7a8a6edd14f8fab44c777dd7281db91f6ae2 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <f77990358628b01bdc03752126ff5f716ea37615 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <25fb4e3402d46f425ec135ef6f09792a4c1b3003 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <fe8c3623ab06603eb760444a032d426542212021 || ec7f99261da9a20d63cbd273511a11a2efe698f2 || f250e4c562a3bd106575032666e9ef46f31231f8 || fffdbf586866e9500b53c9d4b061d3983720375a || 9e969ba431b46b1891c88cea36f722f3bfe8a180 || >=4.14.96 <4.14.326 || >=4.19.18 <4.19.295 || >=3.18.133 <3.19 || >=4.4.172 <4.5 || >=4.9.153 <4.10 || >=4.20.5 <4.21 | 89312657337e6e03ad6e9ea1a462bd9c158c85c8, c807ccdd812d18985860504b503899f3140a9549, e972231db29b5d1dccc13bf9d5ba55b6979a69ed, dc2f60de9a7d3efd982440117dab5579898d808c, fedecaeef88899d940b69368c996e8b3b0b8650d, e95d7a8a6edd14f8fab44c777dd7281db91f6ae2, f77990358628b01bdc03752126ff5f716ea37615, 25fb4e3402d46f425ec135ef6f09792a4c1b3003, fe8c3623ab06603eb760444a032d426542212021, 4.14.326, 4.19.295, 3.19, 4.5, 4.10, 4.21 |
| Linux/Linuxgeneric | 5.0 | Not reported |
Published upstream
Sep 16, 2025
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: pstore/ram: Check start of empty przs during init After commit 30696378f68a ("pstore/ram: Do not treat empty buffers as valid"), initialization would assume a prz was valid after seeing that the buffer_size is zero (regardless of the buffer start position). This unchecked start value means it could be outside the bounds of the buffer, leading to future access panics when written to: sysdump_panic_event+0x3b4/0x5b8 atomic_notifier_call_chain+0x54/0x90 panic+0x1c8/0x42c die+0x29c/0x2a8 die_kernel_fault+0x68/0x78 __do_kernel_fault+0x1c4/0x1e0 do_bad_area+0x40/0x100 do_translation_fault+0x68/0x80 do_mem_abort+0x68/0xf8 el1_da+0x1c/0xc0 __raw_writeb+0x38/0x174 __memcpy_toio+0x40/0xac persistent_ram_update+0x44/0x12c persistent_ram_write+0x1a8/0x1b8 ramoops_pstore_write+0x198/0x1e8 pstore_console_write+0x94/0xe0 ... To avoid this, also check if the prz start is 0 during the initialization phase. If not, the next prz sanity check case will discover it (start > size) and zap the buffer back to a sane state. [kees: update commit log with backtrace and clarifications]
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 | >=e1e3a46706bd4037e8b7407dc660ae6e05b8ac56 <89312657337e6e03ad6e9ea1a462bd9c158c85c8 || >=265242d82a3c6a8bd9120d06b4801f8d7ae9a346 <c807ccdd812d18985860504b503899f3140a9549 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <e972231db29b5d1dccc13bf9d5ba55b6979a69ed || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <dc2f60de9a7d3efd982440117dab5579898d808c || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <fedecaeef88899d940b69368c996e8b3b0b8650d || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <e95d7a8a6edd14f8fab44c777dd7281db91f6ae2 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <f77990358628b01bdc03752126ff5f716ea37615 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <25fb4e3402d46f425ec135ef6f09792a4c1b3003 || >=30696378f68a9e3dad6bfe55938b112e72af00c2 <fe8c3623ab06603eb760444a032d426542212021 || ec7f99261da9a20d63cbd273511a11a2efe698f2 || f250e4c562a3bd106575032666e9ef46f31231f8 || fffdbf586866e9500b53c9d4b061d3983720375a || 9e969ba431b46b1891c88cea36f722f3bfe8a180 || >=4.14.96 <4.14.326 || >=4.19.18 <4.19.295 || >=3.18.133 <3.19 || >=4.4.172 <4.5 || >=4.9.153 <4.10 || >=4.20.5 <4.21 | 89312657337e6e03ad6e9ea1a462bd9c158c85c8, c807ccdd812d18985860504b503899f3140a9549, e972231db29b5d1dccc13bf9d5ba55b6979a69ed, dc2f60de9a7d3efd982440117dab5579898d808c, fedecaeef88899d940b69368c996e8b3b0b8650d, e95d7a8a6edd14f8fab44c777dd7281db91f6ae2, f77990358628b01bdc03752126ff5f716ea37615, 25fb4e3402d46f425ec135ef6f09792a4c1b3003, fe8c3623ab06603eb760444a032d426542212021, 4.14.326, 4.19.295, 3.19, 4.5, 4.10, 4.21 |
| Linux/Linuxgeneric | 5.0 | Not reported |
Published upstream
Sep 16, 2025
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: pstore/ram: Check start of empty przs during init After commit 30696378f68a ("pstore/ram: Do not treat empty buffers as valid"), initialization would assume a prz was valid after seeing that the buffer_size is zero (regardless of the buffer start position). This unchecked start value means it could be outside the bounds of the buffer, leading to future access panics when written to: sysdump_panic_event+0x3b4/0x5b8 atomic_notifier_call_chain+0x54/0x90 panic+0x1c8/0x42c die+0x29c/0x2a8 die_kernel_fault+0x68/0x78 __do_kernel_fault+0x1c4/0x1e0 do_bad_area+0x40/0x100 do_translation_fault+0x68/0x80 do_mem_abort+0x68/0xf8 el1_da+0x1c/0xc0 __raw_writeb+0x38/0x174 __memcpy_toio+0x40/0xac persistent_ram_update+0x44/0x12c persistent_ram_write+0x1a8/0x1b8 ramoops_pstore_write+0x198/0x1e8 pstore_console_write+0x94/0xe0 ... To avoid this, also check if the prz start is 0 during the initialization phase. If not, the next prz sanity check case will discover it (start > size) and zap the buffer back to a sane state. [kees: update commit log with backtrace and clarifications]
Quoted source text, attributed separately from HOL analysis.