UBUNTU-CVE-2024-26973
In the Linux kernel, the following vulnerability has been resolved: fat: fix uninitialized field in nostale filehandles When fat_encode_fh_nostale() encodes file handle without a parent it stores only first 10 bytes of the file handle. However the length of the file handle must be a multiple of 4 so the file handle is actually 12 bytes long and the last two bytes remain uninitialized. This is not great at we potentially leak uninitialized information with the handle to userspace. Properly initialize the full handle length.
02 / AFFECTED SOFTWARE
Affected packages
45 explicit affected versions
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26 explicit affected versions
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37 explicit affected versions
6 explicit affected versions
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167 explicit affected versions
40 explicit affected versions
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40 explicit affected versions
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48 explicit affected versions
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52 explicit affected versions
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1 explicit affected versions
46 explicit affected versions
13 explicit affected versions
43 explicit affected versions
46 explicit affected versions
10 explicit affected versions
8 explicit affected versions
1 explicit affected versions
14 explicit affected versions
81 explicit affected versions
4 explicit affected versions
70 explicit affected versions
11 explicit affected versions
1 explicit affected versions
69 explicit affected versions
11 explicit affected versions
31 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: fat: fix uninitialized field in nostale filehandles When fat_encode_fh_nostale() encodes file handle without a parent it stores only first 10 bytes of the file handle. However the length of the file handle must be a multiple of 4 so the file handle is actually 12 bytes long and the last two bytes remain uninitialized. This is not great at we potentially leak uninitialized information with the handle to userspace. Properly initialize the full handle length.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/fde2497d2bc3a063d8af88b258dbadc86bd7b57c
- https://git.kernel.org/stable/c/03a7e3f2ba3ca25f1da1d3898709a08db14c1abb
- https://git.kernel.org/stable/c/74f852654b8b7866f15323685f1e178d3386c688
- https://git.kernel.org/stable/c/9840d1897e28f8733cc1e38f97e044f987dc0a63
- https://git.kernel.org/stable/c/a276c595c3a629170b0f052a3724f755d7c6adc6
- https://git.kernel.org/stable/c/b7fb63e807c6dadf7ecc1d43448c4f1711d7eeee
- https://git.kernel.org/stable/c/c8cc05de8e6b5612b6e9f92c385c1a064b0db375
- https://git.kernel.org/stable/c/cdd33d54e789d229d6d5007cbf3f53965ca1a5c6
- https://git.kernel.org/stable/c/f52d7663a10a1266a2d3871a6dd8fd111edc549f
- https://git.kernel.org/stable/c/fde2497d2bc3a063d8af88b258dbadc86bd7b57c
- https://ubuntu.com/security/CVE-2024-26973
- https://ubuntu.com/security/notices/USN-6816-1
- https://ubuntu.com/security/notices/USN-6817-1
- https://ubuntu.com/security/notices/USN-6817-2
- https://ubuntu.com/security/notices/USN-6817-3
- https://ubuntu.com/security/notices/USN-6878-1
- https://ubuntu.com/security/notices/USN-6896-1
- https://ubuntu.com/security/notices/USN-6896-2
- https://ubuntu.com/security/notices/USN-6896-3
- https://ubuntu.com/security/notices/USN-6896-4
- https://ubuntu.com/security/notices/USN-6896-5
- https://ubuntu.com/security/notices/USN-6898-1
- https://ubuntu.com/security/notices/USN-6898-2
- https://ubuntu.com/security/notices/USN-6898-3
- https://ubuntu.com/security/notices/USN-6898-4
- https://ubuntu.com/security/notices/USN-6917-1
- https://ubuntu.com/security/notices/USN-6919-1
- https://ubuntu.com/security/notices/USN-6927-1
- https://ubuntu.com/security/notices/USN-7019-1
- https://www.cve.org/CVERecord?id=CVE-2024-26973