Description (CNA)
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
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before 21f8cfe79f776287459343e9cfa6055af61328ea; affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before 260fc96283c0f594de18a1b045faf6d8fb42874d; affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before 927794a02169778c9c2e7b25c768ab3ea8c1dc03; affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before 4c21fa60a6f4606f6214a38f50612b17b2f738f5; affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before f97e75fa4e12b0aa0224e83fcbda8853ac2adf36; affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before 0184747b552d6b5a14db3b7fcc3b792ce64dedd1; affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before a2576ae9a35c078e488f2c573e9e6821d651fbbe; affected 163a203ddb36c36d4a1c942aececda0cc8d06aa7 before 4530b3660d396a646aad91a787b6ab37cf604b53 |
| Linux / Linux | affected 3.12; unaffected 0 before 3.12; unaffected 4.19.308 through 4.19.*; unaffected 5.4.270 through 5.4.*; unaffected 5.10.211 through 5.10.*; unaffected 5.15.150 through 5.15.*; unaffected 6.1.80 through 6.1.*; unaffected 6.6.19 through 6.6.*; unaffected 6.7.7 through 6.7.*; unaffected 6.8 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea
- https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d
- https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03
- https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5
- https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36
- https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1
- https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe
- https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea
- https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d
- https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03
- https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5
- https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36
- https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1
- https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe
- https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
No English description supplied.