Answer in brief
CVE-2024-26773 records a Unknown severity vulnerability in ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found(). 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-2024-26773 records a Unknown severity vulnerability in ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found(). 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 | 3.12 | Not reported |
| Linux/Linuxgeneric | >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <21f8cfe79f776287459343e9cfa6055af61328ea || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <260fc96283c0f594de18a1b045faf6d8fb42874d || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <927794a02169778c9c2e7b25c768ab3ea8c1dc03 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <4c21fa60a6f4606f6214a38f50612b17b2f738f5 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <0184747b552d6b5a14db3b7fcc3b792ce64dedd1 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <a2576ae9a35c078e488f2c573e9e6821d651fbbe || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <4530b3660d396a646aad91a787b6ab37cf604b53 | 21f8cfe79f776287459343e9cfa6055af61328ea, 260fc96283c0f594de18a1b045faf6d8fb42874d, 927794a02169778c9c2e7b25c768ab3ea8c1dc03, 4c21fa60a6f4606f6214a38f50612b17b2f738f5, f97e75fa4e12b0aa0224e83fcbda8853ac2adf36, 0184747b552d6b5a14db3b7fcc3b792ce64dedd1, a2576ae9a35c078e488f2c573e9e6821d651fbbe, 4530b3660d396a646aad91a787b6ab37cf604b53 |
Published upstream
Apr 3, 2024
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: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() Determine if the group block bitmap is corrupted before using ac_b_ex in ext4_mb_try_best_found() to avoid allocating blocks from a group with a corrupted block bitmap in the following concurrency and making the situation worse. ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn't use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group
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 | 3.12 | Not reported |
| Linux/Linuxgeneric | >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <21f8cfe79f776287459343e9cfa6055af61328ea || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <260fc96283c0f594de18a1b045faf6d8fb42874d || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <927794a02169778c9c2e7b25c768ab3ea8c1dc03 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <4c21fa60a6f4606f6214a38f50612b17b2f738f5 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <0184747b552d6b5a14db3b7fcc3b792ce64dedd1 || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <a2576ae9a35c078e488f2c573e9e6821d651fbbe || >=163a203ddb36c36d4a1c942aececda0cc8d06aa7 <4530b3660d396a646aad91a787b6ab37cf604b53 | 21f8cfe79f776287459343e9cfa6055af61328ea, 260fc96283c0f594de18a1b045faf6d8fb42874d, 927794a02169778c9c2e7b25c768ab3ea8c1dc03, 4c21fa60a6f4606f6214a38f50612b17b2f738f5, f97e75fa4e12b0aa0224e83fcbda8853ac2adf36, 0184747b552d6b5a14db3b7fcc3b792ce64dedd1, a2576ae9a35c078e488f2c573e9e6821d651fbbe, 4530b3660d396a646aad91a787b6ab37cf604b53 |
Published upstream
Apr 3, 2024
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: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() Determine if the group block bitmap is corrupted before using ac_b_ex in ext4_mb_try_best_found() to avoid allocating blocks from a group with a corrupted block bitmap in the following concurrency and making the situation worse. ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn't use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group
Quoted source text, attributed separately from HOL analysis.