RHSA-2024:5256 - Security Advisory

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: netfilter: nf_tables: disallow anonymous set with timeout flag (CVE-2024-26642)
• kernel: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain (CVE-2024-26808)
• kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886)
• kernel: fs: sysfs: Fix reference leak in sysfs_break_active_protection() (CVE-2024-26993)
• kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by untrusted application (CVE-2024-21823)
• kernel: netfilter: nf_tables: use timestamp to check for set element timeout (CVE-2024-27397)
• kernel: netfilter: nft_flow_offload: reset dst in route object after setting up flow (CVE-2024-27403)
• kernel: netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get() (CVE-2024-35898)
• kernel: netfilter: nf_tables: discard table flag update with pending basechain deletion (CVE-2024-35897)
• kernel: net: CVE-2024-36971 kernel: UAF in network route management (CVE-2024-36971)
• kernel: ionic: fix use after netif_napi_del() (CVE-2024-39502)
• kernel: scsi: qedi: Fix crash while reading debugfs attribute (CVE-2024-40978)
• kernel: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change (CVE-2021-47624)
• kernel: virtio-net: tap: mlx5_core short frame denial of service (CVE-2024-41090)
• kernel: virtio-net: tun: mlx5_core short frame denial of service (CVE-2024-41091)

Bug Fix(es):

• kernel-rt: update RT source tree to the latest RHEL-9.0.z Batch 19 (JIRA:RHEL-45540)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer 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

Affected Products

• Red Hat Enterprise Linux for Real Time for x86_64 - 4 years of updates 9.0 x86_64
• Red Hat Enterprise Linux for Real Time for NFV for x86_64 - 4 years of updates 9.0 x86_64

Fixes

• BZ - 2270881 - CVE-2024-26642 kernel: netfilter: nf_tables: disallow anonymous set with timeout flag
• BZ - 2273405 - CVE-2024-26808 kernel: netfilter: nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain
• BZ - 2277238 - CVE-2024-36886 kernel: TIPC message reassembly use-after-free remote code execution vulnerability
• BZ - 2278314 - CVE-2024-26993 kernel: fs: sysfs: Fix reference leak in sysfs_break_active_protection()
• BZ - 2278989 - CVE-2024-21823 kernel: dmaengine/idxd: hardware erratum allows potential security problem with direct access by untrusted application
• BZ - 2280434 - CVE-2024-27397 kernel: netfilter: nf_tables: use timestamp to check for set element timeout
• BZ - 2281127 - CVE-2024-27403 kernel: netfilter: nft_flow_offload: reset dst in route object after setting up flow
• BZ - 2281669 - CVE-2024-35898 kernel: netfilter: nf_tables: Fix potential data-race in __nft_flowtable_type_get()
• BZ - 2281672 - CVE-2024-35897 kernel: netfilter: nf_tables: discard table flag update with pending basechain deletion
• BZ - 2292331 - CVE-2024-36971 kernel: net: CVE-2024-36971 kernel: UAF in network route management
• BZ - 2297474 - CVE-2024-39502 kernel: ionic: fix use after netif_napi_del()
• BZ - 2297562 - CVE-2024-40978 kernel: scsi: qedi: Fix crash while reading debugfs attribute
• BZ - 2298108 - CVE-2021-47624 kernel: net/sunrpc: fix reference count leaks in rpc_sysfs_xprt_state_change
• BZ - 2299240 - CVE-2024-41090 kernel: virtio-net: tap: mlx5_core short frame denial of service
• BZ - 2299336 - CVE-2024-41091 kernel: virtio-net: tun: mlx5_core short frame denial of service

CVEs

• CVE-2021-47624
• CVE-2024-21823
• CVE-2024-26642
• CVE-2024-26808
• CVE-2024-26993
• CVE-2024-27397
• CVE-2024-27403
• CVE-2024-35897
• CVE-2024-35898
• CVE-2024-36886
• CVE-2024-36971
• CVE-2024-39502
• CVE-2024-40978
• CVE-2024-41090
• CVE-2024-41091

References

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