UBUNTU-CVE-2024-56774
In the Linux kernel, the following vulnerability has been resolved: btrfs: add a sanity check for btrfs root in btrfs_search_slot() Syzbot reports a null-ptr-deref in btrfs_search_slot(). The reproducer is using rescue=ibadroots, and the extent tree root is corrupted thus the extent tree is NULL. When scrub tries to search the extent tree to gather the needed extent info, btrfs_search_slot() doesn't check if the target root is NULL or not, resulting the null-ptr-deref. Add sanity check for btrfs root before using it in btrfs_search_slot().
02 / AFFECTED SOFTWARE
Affected packages
60 explicit affected versions
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12 explicit affected versions
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15 explicit affected versions
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2 explicit affected versions
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12 explicit affected versions
16 explicit affected versions
10 explicit affected versions
37 explicit affected versions
1 explicit affected versions
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66 explicit affected versions
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16 explicit affected versions
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24 explicit affected versions
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23 explicit affected versions
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10 explicit affected versions
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26 explicit affected versions
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1 explicit affected versions
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21 explicit affected versions
16 explicit affected versions
63 explicit affected versions
24 explicit affected versions
53 explicit affected versions
3 explicit affected versions
1 explicit affected versions
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51 explicit affected versions
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26 explicit affected versions
20 explicit affected versions
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13 explicit affected versions
7 explicit affected versions
2 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
45 explicit affected versions
14 explicit affected versions
38 explicit affected versions
53 explicit affected versions
9 explicit affected versions
51 explicit affected versions
11 explicit affected versions
15 explicit affected versions
7 explicit affected versions
62 explicit affected versions
60 explicit affected versions
13 explicit affected versions
43 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
4 explicit affected versions
78 explicit affected versions
11 explicit affected versions
1 explicit affected versions
14 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: btrfs: add a sanity check for btrfs root in btrfs_search_slot() Syzbot reports a null-ptr-deref in btrfs_search_slot(). The reproducer is using rescue=ibadroots, and the extent tree root is corrupted thus the extent tree is NULL. When scrub tries to search the extent tree to gather the needed extent info, btrfs_search_slot() doesn't check if the target root is NULL or not, resulting the null-ptr-deref. Add sanity check for btrfs root before using it in btrfs_search_slot().
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/3ed51857a50f530ac7a1482e069dfbd1298558d4
- https://git.kernel.org/stable/c/3ed51857a50f530ac7a1482e069dfbd1298558d4
- https://git.kernel.org/stable/c/757171d1369b3b47f36932d40a05a0715496dcab
- https://git.kernel.org/stable/c/93992c3d9629b02dccf6849238559d5c24f2dece
- https://git.kernel.org/stable/c/c71d114ef68c95da5a82ec85a721ab31f5bd905b
- https://git.kernel.org/stable/c/db66fb87c21e8ae724886e6a464dcbac562a64c6
- https://ubuntu.com/security/CVE-2024-56774
- https://ubuntu.com/security/notices/USN-7379-1
- https://ubuntu.com/security/notices/USN-7379-2
- https://ubuntu.com/security/notices/USN-7380-1
- https://ubuntu.com/security/notices/USN-7381-1
- https://ubuntu.com/security/notices/USN-7382-1
- https://ubuntu.com/security/notices/USN-7387-1
- https://ubuntu.com/security/notices/USN-7387-2
- https://ubuntu.com/security/notices/USN-7387-3
- https://ubuntu.com/security/notices/USN-7388-1
- https://ubuntu.com/security/notices/USN-7389-1
- https://ubuntu.com/security/notices/USN-7390-1
- https://ubuntu.com/security/notices/USN-7407-1
- https://ubuntu.com/security/notices/USN-7421-1
- https://ubuntu.com/security/notices/USN-7449-1
- https://ubuntu.com/security/notices/USN-7449-2
- https://ubuntu.com/security/notices/USN-7450-1
- https://ubuntu.com/security/notices/USN-7451-1
- https://ubuntu.com/security/notices/USN-7452-1
- https://ubuntu.com/security/notices/USN-7453-1
- https://ubuntu.com/security/notices/USN-7458-1
- https://ubuntu.com/security/notices/USN-7459-1
- https://ubuntu.com/security/notices/USN-7459-2
- https://ubuntu.com/security/notices/USN-7468-1
- https://ubuntu.com/security/notices/USN-7523-1
- https://ubuntu.com/security/notices/USN-7524-1
- https://www.cve.org/CVERecord?id=CVE-2024-56774