Threats Tagged 'cve-2026-45998'

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: rxrpc: Fix potential UAF after skb_unshare() failure (CVE-2026-45998) * kernel: smb/client: fix out-of-bounds read in smb2_compound_op() (CVE-2026-46155) * kernel: io_uring/poll: fix signed comparison in io_poll_get_ownership() (CVE-2026-52933) * kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185) * kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196) * kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886) * kernel: i2c: stub: Reject I2C block transfers with invalid length (CVE-2026-64191) * kernel: posix-cpu-timers: Prevent UAF caused by non-leader exec() race (CVE-2026-64560) Bug Fix(es) and Enhancement(s): * [HPEMC RHEL 9 BUG] tick/sched: Limit non-timkeeper CPUs calling jiffies upda [rhel-9.6.z] (JIRA:RHEL-141460) * ibmveth Adapter Freeze with Small MSS [rhel-9.6.z] (JIRA:RHEL-178307) * RT scheduler livelock caused by missing backport of 94894c9c477e [rhel-9.6.z] (JIRA:RHEL-244409) 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.

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: Kernel: Privilege escalation via uninitialized data in vmci transport packet (CVE-2025-38403) * kernel: netfilter: nft_set_pipapo_avx2: don't return non-matching entry on expiry (CVE-2026-43114) * kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels (CVE-2026-46099) * kernel: rxrpc: Fix potential UAF after skb_unshare() failure (CVE-2026-45998) * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056) * kernel: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117) * kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145) * kernel: ipv6: fix possible UAF in icmpv6_rcv() (CVE-2026-53006) * kernel: ice: fix double-free of tx_buf skb (CVE-2026-53009) * kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196) * kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886) * kernel: crypto: qat - validate RSA CRT component lengths (CVE-2026-64304) Bug Fix(es) and Enhancement(s): * smb: client: use actual path when queryfs (JIRA:RHEL-145425) * RT scheduler livelock caused by missing backport of 94894c9c477e [rhel-9.4.z] (JIRA:RHEL-244408) * kernel warning : kernel/softirq.c:306 do_softirq_post_smp_call_flush+0x29/0x60 when system is booted with nosmt [rhel-9.4.z] (JIRA:RHEL-80300) 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.

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix potential UAF after skb_unshare() failure If skb_unshare() fails to unshare a packet due to allocation failure in rxrpc_input_packet(), the skb pointer in the parent (rxrpc_io_thread()) will be NULL'd out. This will likely cause the call to trace_rxrpc_rx_done() to oops. Fix this by moving the unsharing down to where rxrpc_input_call_event() calls rxrpc_input_call_packet(). There are a number of places prior to that where we ignore DATA packets for a variety of reasons (such as the call already being complete) for which an unshare is then avoided. And with that, rxrpc_input_packet() doesn't need to take a pointer to the pointer to the packet, so change that to just a pointer.