UBUNTU-CVE-2020-12656
gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug
02 / AFFECTED SOFTWARE
Affected packages
81 explicit affected versions
42 explicit affected versions
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57 explicit affected versions
191 explicit affected versions
47 explicit affected versions
12 explicit affected versions
28 explicit affected versions
2 explicit affected versions
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23 explicit affected versions
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1 explicit affected versions
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1 explicit affected versions
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23 explicit affected versions
23 explicit affected versions
10 explicit affected versions
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83 explicit affected versions
12 explicit affected versions
2 explicit affected versions
47 explicit affected versions
4 explicit affected versions
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1 explicit affected versions
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51 explicit affected versions
5 explicit affected versions
60 explicit affected versions
1 explicit affected versions
6 explicit affected versions
2 explicit affected versions
1 explicit affected versions
2 explicit affected versions
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5 explicit affected versions
70 explicit affected versions
2 explicit affected versions
29 explicit affected versions
44 explicit affected versions
16 explicit affected versions
26 explicit affected versions
9 explicit affected versions
38 explicit affected versions
9 explicit affected versions
90 explicit affected versions
2 explicit affected versions
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25 explicit affected versions
37 explicit affected versions
2 explicit affected versions
31 explicit affected versions
1 explicit affected versions
12 explicit affected versions
6 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug
05 / REFERENCES