RHSA-2024:11486 - Security Advisory

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout (CVE-2024-27399)
• kernel: bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE (CVE-2024-38564)
• kernel: bpf: Fix a kernel verifier crash in stacksafe() (CVE-2024-45020)
• kernel: nfsd: ensure that nfsd4_fattr_args.context is zeroed out (CVE-2024-46697)
• kernel: bpf: Fix use-after-free in bpf_uprobe_multi_link_attach() (CVE-2024-47675)
• kernel: bpf: Fix a sdiv overflow issue (CVE-2024-49888)
• kernel: arm64: probes: Remove broken LDR (literal) uprobe support (CVE-2024-50099)
• kernel: xfrm: fix one more kernel-infoleak in algo dumping (CVE-2024-50110)
• kernel: Bluetooth: SCO: Fix UAF on sco_sock_timeout (CVE-2024-50125)
• kernel: Bluetooth: ISO: Fix UAF on iso_sock_timeout (CVE-2024-50124)
• kernel: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory (CVE-2024-50115)
• kernel: xfrm: validate new SA's prefixlen using SA family when sel.family is unset (CVE-2024-50142)
• kernel: Bluetooth: bnep: fix wild-memory-access in proto_unregister (CVE-2024-50148)
• kernel: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE (CVE-2024-50192)
• kernel: Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecs (CVE-2024-50255)
• kernel: sched/numa: Fix the potential null pointer dereference in task_numa_work() (CVE-2024-50223)
• kernel: bpf: Fix out-of-bounds write in trie_get_next_key() (CVE-2024-50262)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for x86_64 9 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 9 aarch64
• Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x

Fixes

• BZ - 2280462 - CVE-2024-27399 kernel: Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout
• BZ - 2293429 - CVE-2024-38564 kernel: bpf: Add BPF_PROG_TYPE_CGROUP_SKB attach type enforcement in BPF_LINK_CREATE
• BZ - 2311717 - CVE-2024-45020 kernel: bpf: Fix a kernel verifier crash in stacksafe()
• BZ - 2312085 - CVE-2024-46697 kernel: nfsd: ensure that nfsd4_fattr_args.context is zeroed out
• BZ - 2320254 - CVE-2024-47675 kernel: bpf: Fix use-after-free in bpf_uprobe_multi_link_attach()
• BZ - 2320517 - CVE-2024-49888 kernel: bpf: Fix a sdiv overflow issue
• BZ - 2323904 - CVE-2024-50099 kernel: arm64: probes: Remove broken LDR (literal) uprobe support
• BZ - 2323930 - CVE-2024-50110 kernel: xfrm: fix one more kernel-infoleak in algo dumping
• BZ - 2323937 - CVE-2024-50125 kernel: Bluetooth: SCO: Fix UAF on sco_sock_timeout
• BZ - 2323944 - CVE-2024-50124 kernel: Bluetooth: ISO: Fix UAF on iso_sock_timeout
• BZ - 2323955 - CVE-2024-50115 kernel: KVM: nSVM: Ignore nCR3[4:0] when loading PDPTEs from memory
• BZ - 2324315 - CVE-2024-50142 kernel: xfrm: validate new SA's prefixlen using SA family when sel.family is unset
• BZ - 2324332 - CVE-2024-50148 kernel: Bluetooth: bnep: fix wild-memory-access in proto_unregister
• BZ - 2324612 - CVE-2024-50192 kernel: irqchip/gic-v4: Don't allow a VMOVP on a dying VPE
• BZ - 2324867 - CVE-2024-50255 kernel: Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecs
• BZ - 2324868 - CVE-2024-50223 kernel: sched/numa: Fix the potential null pointer dereference in task_numa_work()
• BZ - 2324892 - CVE-2024-50262 kernel: bpf: Fix out-of-bounds write in trie_get_next_key()

CVEs

• CVE-2024-27399
• CVE-2024-38564
• CVE-2024-45020
• CVE-2024-46697
• CVE-2024-47675
• CVE-2024-49888
• CVE-2024-50099
• CVE-2024-50110
• CVE-2024-50115
• CVE-2024-50124
• CVE-2024-50125
• CVE-2024-50142
• CVE-2024-50148
• CVE-2024-50192
• CVE-2024-50223
• CVE-2024-50255
• CVE-2024-50262

References

• https://access.redhat.com/security/updates/classification/#moderate