DEBIAN-CVE-2023-53536

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Source
https://security-tracker.debian.org/tracker/CVE-2023-53536
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53536.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2023-53536
Upstream
Published
2025-10-04T16:15:48Z
Modified
2025-10-05T08:10:33.027650Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: blk-crypto: make blkcryptoevictkey() more robust If blkcryptoevictkey() sees that the key is still in-use (due to a bug) or that ->keyslotevict failed, it currently just returns while leaving the key linked into the keyslot management structures. However, blkcryptoevictkey() is only called in contexts such as inode eviction where failure is not an option. So actually the caller proceeds with freeing the blkcryptokey regardless of the return value of blkcryptoevictkey(). These two assumptions don't match, and the result is that there can be a use-after-free in blkcryptoreprogramallkeys() after one of these errors occurs. (Note, these errors *shouldn't* happen; we're just talking about what happens if they do anyway.) Fix this by making blkcryptoevictkey() unlink the key from the keyslot management structures even on failure. Also improve some comments.

References

Affected packages

Debian:11 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.10.191-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2
5.10.158-1
5.10.158-2
5.10.162-1
5.10.178-1
5.10.178-2
5.10.178-3
5.10.179-1
5.10.179-2
5.10.179-3
5.10.179-4
5.10.179-5

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.37-1

Affected versions

6.*

6.1.27-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.3.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.3.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}