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The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various
security and bugfixes.
The following security bugs were fixed:
- CVE-2021-29650: Fixed an issue with the netfilter subsystem that allowed
attackers to cause a denial of service (panic) because
net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a
full memory barrier upon the assignment of a new table value
(bnc#1184208).
- CVE-2021-29155: Fixed an issue that was discovered in
kernel/bpf/verifier.c that performs undesirable out-of-bounds
speculation on pointer arithmetic, leading to side-channel attacks that
defeat Spectre mitigations and obtain sensitive information from kernel
memory. Specifically, for sequences of pointer arithmetic operations,
the pointer modification performed by the first operation was not
correctly accounted for when restricting subsequent operations
(bnc#1184942).
The following non-security bugs were fixed:
https://lists.suse.com/pipermail/sle-security-updates/2021-May/008767.html
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