CVE-2024-26773
N/A
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < 21f8cfe79f776287459343e9cfa6055af61328ea | affected |
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < 260fc96283c0f594de18a1b045faf6d8fb42874d | affected |
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < 927794a02169778c9c2e7b25c768ab3ea8c1dc03 | affected |
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < 4c21fa60a6f4606f6214a38f50612b17b2f738f5 | affected |
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 | affected |
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < 0184747b552d6b5a14db3b7fcc3b792ce64dedd1 | affected |
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < a2576ae9a35c078e488f2c573e9e6821d651fbbe | affected |
| Linux | Linux | 163a203ddb36c36d4a1c942aececda0cc8d06aa7 < 4530b3660d396a646aad91a787b6ab37cf604b53 | affected |
| Linux | Linux | 3.12 | affected |
| Linux | Linux | 0 < 3.12 | unaffected |
| Linux | Linux | 4.19.308 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.270 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.211 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.150 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.80 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.19 <= 6.6.* | unaffected |
| Linux | Linux | 6.7.7 <= 6.7.* | unaffected |
| Linux | Linux | 6.8 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
CVE Program Container
Additional 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
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
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
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