UBUNTU-CVE-2020-12771
An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.
02 / AFFECTED SOFTWARE
Affected packages
82 explicit affected versions
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1 explicit affected versions
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6 explicit affected versions
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1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/colyli/bcache-patches.git/tree/for-test/0001-bcache-fix-potential-deadlock-problem-in-btree_gc_co.patch
- https://lkml.org/lkml/2020/4/26/87
- https://lore.kernel.org/lkml/[email protected]/
- https://ubuntu.com/security/CVE-2020-12771
- https://ubuntu.com/security/notices/USN-4462-1
- https://ubuntu.com/security/notices/USN-4463-1
- https://ubuntu.com/security/notices/USN-4465-1
- https://ubuntu.com/security/notices/USN-4483-1
- https://ubuntu.com/security/notices/USN-4485-1
- https://www.cve.org/CVERecord?id=CVE-2020-12771