UBUNTU-CVE-2024-58008
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y With vmalloc stack addresses enabled (CONFIG_VMAP_STACK=y) DCP trusted keys can crash during en- and decryption of the blob encryption key via the DCP crypto driver. This is caused by improperly using sg_init_one() with vmalloc'd stack buffers (plain_key_blob). Fix this by always using kmalloc() for buffers we give to the DCP crypto driver.
02 / AFFECTED SOFTWARE
Affected packages
11 explicit affected versions
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35 explicit affected versions
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1 explicit affected versions
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37 explicit affected versions
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26 explicit affected versions
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51 explicit affected versions
13 explicit affected versions
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27 explicit affected versions
8 explicit affected versions
5 explicit affected versions
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13 explicit affected versions
7 explicit affected versions
3 explicit affected versions
10 explicit affected versions
12 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
45 explicit affected versions
37 explicit affected versions
14 explicit affected versions
38 explicit affected versions
9 explicit affected versions
11 explicit affected versions
7 explicit affected versions
4 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
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y With vmalloc stack addresses enabled (CONFIG_VMAP_STACK=y) DCP trusted keys can crash during en- and decryption of the blob encryption key via the DCP crypto driver. This is caused by improperly using sg_init_one() with vmalloc'd stack buffers (plain_key_blob). Fix this by always using kmalloc() for buffers we give to the DCP crypto driver.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/e8d9fab39d1f87b52932646b2f1e7877aa3fc0f4
- https://git.kernel.org/stable/c/3192f1c54dddb9b5820bf5e8677809949d8e9c66
- https://git.kernel.org/stable/c/3355594de46fb1cba663f12b9644b664b8a609f4
- https://git.kernel.org/stable/c/e8d9fab39d1f87b52932646b2f1e7877aa3fc0f4
- https://ubuntu.com/security/CVE-2024-58008
- https://ubuntu.com/security/notices/USN-7521-1
- https://ubuntu.com/security/notices/USN-7521-2
- https://ubuntu.com/security/notices/USN-7521-3
- https://www.cve.org/CVERecord?id=CVE-2024-58008