The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)
You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)
- CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not ne
The SUSE Linux Enterprise 15 SP3 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/x_tables.c that could allow local provilege escalation. (bsc#1188116)
- CVE-2021-33624: Fixed a bug which allows unprivileged BPF program to leak the contents of arbitrary kernel memory (and therefore, of all physical memory) via a side-channel. (bsc#1187554)
- CVE-2021-0605: Fixed an out-of-bounds read which could lead to local information disclosure in the kernel with System execution privileges needed. (bsc#1187601)
- CVE-2021-0512: Fixed
The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic operations by the BPF verifier could be abused to perform out-of-bounds reads and writes in kernel memory (bsc#1186484).
- CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This could lead to writing an arbitrary values. (bsc#1186111)
- CVE-2020-26139: Fixed a denial-of-service when an Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. (bnc#11860
The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2020-36312: Fixed an issue in virt/kvm/kvm_main.c that had a kvm_io_bus_unregister_dev memory leak upon a kmalloc failure (bnc#1184509).
- CVE-2021-29650: Fixed an issue inside 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 within kernel/bpf/verifier.c that performed undesirab
The SUSE Linux Enterprise 15 SP1 kernel was updated receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2021-26930: Fixed an improper error handling in blkback's grant mapping (XSA-365 bsc#1181843).
- CVE-2021-26931: Fixed an issue where Linux kernel was treating grant mapping errors as bugs (XSA-362 bsc#1181753).
- CVE-2021-26932: Fixed improper error handling issues in Linux grant mapping (XSA-361 bsc#1181747).
by remote attackers to read or write files via directory traversal in an XCOPY request (bsc#178372).
- CVE-2020-29368,CVE-2020-29374: Fixed an issue in copy-on-write implementation which could ha
The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:
- CVE-2021-3347: A use-after-free was discovered in the PI futexes during fault handling, allowing local users to execute code in the kernel (bnc#1181349).
- CVE-2021-3348: Fixed a use-after-free in nbd_add_socket that could be triggered by local attackers (with access to the nbd device) via an I/O request at a certain point during device setup (bnc#1181504).
- CVE-2021-20177: Fixed a kernel panic related to iptables string matching rules. A privileged user could insert a rule which could lead to denial of