Summary
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564)
* net/ulp: use-after-free in listening ULP sockets (CVE-2023-0461)
* hw: cpu: AMD CPUs may transiently execute beyond unconditional direct branch (CVE-2021-26341)
* malicious data for FBIOPUT_VSCREENINFO ioctl may cause OOB write memory (CVE-2021-33655)
* when setting font with malicious data by ioctl PIO_FONT, kernel will write memory out of bounds (CVE-2021-33656)
* possible race condition in drivers/tty/tty_buffers.c (CVE-2022-1462)
* use-after-free in ath9k_htc_probe_device() could cause an escalation of privileges (CVE-2022-1679)
* KVM: NULL pointer dereference in kvm_mmu_invpcid_gva (CVE-2022-1789)
* KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks (CVE-2022-2196)
* netfilter: nf_conntrack_irc message handling issue (CVE-2022-2663)
* race condition in xfrm_probe_algs can lead to OOB read/write (CVE-2022-3028)
* media: em28xx: initialize refcount before kref_get (CVE-2022-3239)
* race condition in hugetlb_no_page() in mm/hugetlb.c (CVE-2022-3522)
* memory leak in ipv6_renew_options() (CVE-2022-3524)
* data races around icsk->icsk_af_ops in do_ipv6_setsockopt (CVE-2022-3566)
* data races around sk->sk_prot (CVE-2022-3567)
* memory leak in l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c (CVE-2022-3619)
* denial of service in follow_page_pte in mm/gup.c due to poisoned pte entry (CVE-2022-3623)
* use-after-free after failed devlink reload in devlink_param_get (CVE-2022-3625)
* USB-accessible buffer overflow in brcmfmac (CVE-2022-3628)
* Double-free in split_2MB_gtt_entry when function intel_gvt_dma_map_guest_page failed (CVE-2022-3707)
* l2tp: missing lock when clearing sk_user_data can lead to NULL pointer dereference (CVE-2022-4129)
* igmp: use-after-free in ip_check_mc_rcu when opening and closing inet sockets (CVE-2022-20141)
* Executable Space Protection Bypass (CVE-2022-25265)
* Unprivileged users may use PTRACE_SEIZE to set PTRACE_O_SUSPEND_SECCOMP option (CVE-2022-30594)
* unmap_mapping_range() race with munmap() on VM_PFNMAP mappings leads to stale TLB entry (CVE-2022-39188)
* TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED leading to guest malfunctioning (CVE-2022-39189)
* Report vmalloc UAF in dvb-core/dmxdev (CVE-2022-41218)
* u8 overflow problem in cfg80211_update_notlisted_nontrans() (CVE-2022-41674)
* use-after-free related to leaf anon_vma double reuse (CVE-2022-42703)
* use-after-free in bss_ref_get in net/wireless/scan.c (CVE-2022-42720)
* BSS list corruption in cfg80211_add_nontrans_list in net/wireless/scan.c (CVE-2022-42721)
* Denial of service in beacon protection for P2P-device (CVE-2022-42722)
* memory corruption in usbmon driver (CVE-2022-43750)
* NULL pointer dereference in traffic control subsystem (CVE-2022-47929)
* NULL pointer dereference in rawv6_push_pending_frames (CVE-2023-0394)
* use-after-free caused by invalid pointer hostname in fs/cifs/connect.c (CVE-2023-1195)
* Soft lockup occurred during __page_mapcount (CVE-2023-1582)
* slab-out-of-bounds read vulnerabilities in cbq_classify (CVE-2023-23454)
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.
Additional Changes:
For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.
Fixed packages 12
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | kernel-rt | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-core | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-debug | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-debug-core | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-debug-devel | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-debug-kvm | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-debug-modules | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-debug-modules-extra | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-devel | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-kvm | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-modules | 4.18.0-477.10.1.rt7.274.el8_8 |
| AlmaLinux · 8 | kernel-rt-modules-extra | 4.18.0-477.10.1.rt7.274.el8_8 |
Vulnerabilities 39
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High 8.1
An issue was discovered in the Linux kernel before 5.19.16. Attackers able to inject WLAN frames could cause a buffer o…
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High 7.8
An issue was discovered the x86 KVM subsystem in the Linux kernel before 5.18.17. Unprivileged guest users can compromi…
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High 7.8
Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before …
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High 7.8CVE-2023-0461 Public exploit
Use-after-free vulnerability in the Linux Kernel
There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not …
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High 7.0CVE-2022-3522 Rejected
DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigat…
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Medium 6.7
drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-space client …
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Medium 6.6
A buffer overflow flaw was found in the Linux kernel Broadcom Full MAC Wi-Fi driver. This issue occurs when a user conn…
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Medium 5.8
Speculative execution attacks in KVM VMX
A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support…
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Medium 5.5CVE-2022-3564 Public exploit
Linux Kernel Bluetooth l2cap_core.c l2cap_reassemble_sdu use after free
A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to use after free. It is recommende…
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Medium 5.5
A double-free memory flaw was found in the Linux kernel. The Intel GVT-g graphics driver triggers VGA card system resou…
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Medium 5.5CVE-2022-41218 Public exploit
In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused by refcount ra…
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Medium 5.5
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can…
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Medium 5.5
A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could…
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Medium 5.5
In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows an unprivilege…
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Medium 5.5
A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network subcomponent in…
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Medium 5.5
A use-after-free flaw was found in reconn_set_ipaddr_from_hostname in fs/cifs/connect.c in the Linux kernel. The issue …
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Medium 5.5
cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (sl…
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Medium 5.0
Linux Kernel BPF gup.c follow_page_pte race condition
A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function follow_page_pte of the file mm/gup.c of the component BPF. The manipulation leads to race condition. The attack can be launched remo…
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Medium 4.7
A race problem was found in fs/proc/task_mmu.c in the memory management sub-component in the Linux kernel. This issue m…
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Medium 4.6
Linux Kernel TCP tcp_setsockopt race condition
A vulnerability was identified in Linux Kernel up to 4.19.316/5.4.278/5.10.220/5.15.161. This impacts the function tcp_getsockopt/tcp_setsockopt of the component TCP Handler. Such manipulation leads to race condition. A high complexity level is associated wit…
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Medium 4.6
Linux Kernel IPv6 inet6_dgram_ops race condition
A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects the function inet6_stream_ops/inet6_dgram_ops of the component IPv6 Handler. The manipulation leads to race condition. It is recommended to apply a patch …
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Medium 4.6
Linux Kernel IPsec devlink.c devlink_param_get use after free
A vulnerability was found in Linux Kernel. It has been classified as critical. This affects the function devlink_param_set/devlink_param_get of the file net/core/devlink.c of the component IPsec. The manipulation leads to use after free. It is recommended to …
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Medium 4.3
Linux Kernel IPv6 ipv6_renew_options memory leak
A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function ipv6_renew_options of the component IPv6 Handler. The manipulation leads to memory leak. The attack can be launched remotely. It is …
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Low 3.5
Linux Kernel Bluetooth l2cap_core.c l2cap_recv_acldata memory leak
A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects the function l2cap_recv_acldata of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The manipulation leads to memory leak. It is recommende…
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Unscored —
Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakag…
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Unscored —
When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.
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Unscored —
When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.
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Unscored —
An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem. The issue occurs in how a user triggers …
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Unscored —CVE-2022-1679 Public exploit
A use-after-free flaw was found in the Linux kernel’s Atheros wireless adapter driver in the way a user forces the ath9…
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Unscored —
With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed wi…
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Unscored —
In ip_check_mc_rcu of igmp.c, there is a possible use after free due to improper locking. This could lead to local esca…
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Unscored —CVE-2022-25265 Public exploit
In the Linux kernel through 5.16.10, certain binary files may have the exec-all attribute if they were built in approxi…
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Unscored —
An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly m…
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Unscored —
A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem) when multiple c…
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Unscored —CVE-2022-30594 Public exploit
The Linux kernel before 5.17.2 mishandles seccomp permissions. The PTRACE_SEIZE code path allows attackers to bypass in…
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Unscored —
A flaw use after free in the Linux kernel video4linux driver was found in the way user triggers em28xx_usb_probe() for …
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Unscored —
An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unma…
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Unscored —CVE-2022-42703 Public exploit
mm/rmap.c in the Linux kernel before 5.19.7 has a use-after-free related to leaf anon_vma double reuse.
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Unscored —
In the Linux kernel 5.8 through 5.19.x before 5.19.16, local attackers able to inject WLAN frames into the mac80211 sta…
References
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report
https://access.redhat.com/security/cve/CVE-2021-26341
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report
https://access.redhat.com/security/cve/CVE-2021-33655
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report
https://access.redhat.com/security/cve/CVE-2021-33656
-
report
https://access.redhat.com/security/cve/CVE-2022-1462
-
report
https://access.redhat.com/security/cve/CVE-2022-1679
-
report
https://access.redhat.com/security/cve/CVE-2022-1789
-
report
https://access.redhat.com/security/cve/CVE-2022-20141
-
report
https://access.redhat.com/security/cve/CVE-2022-2196
-
report
https://access.redhat.com/security/cve/CVE-2022-25265
-
report
https://access.redhat.com/security/cve/CVE-2022-2663
-
report
https://access.redhat.com/security/cve/CVE-2022-3028
-
report
https://access.redhat.com/security/cve/CVE-2022-30594
-
report
https://access.redhat.com/security/cve/CVE-2022-3239
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report
https://access.redhat.com/security/cve/CVE-2022-3522
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report
https://access.redhat.com/security/cve/CVE-2022-3524
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report
https://access.redhat.com/security/cve/CVE-2022-3564
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report
https://access.redhat.com/security/cve/CVE-2022-3566
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report
https://access.redhat.com/security/cve/CVE-2022-3567
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report
https://access.redhat.com/security/cve/CVE-2022-3619
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report
https://access.redhat.com/security/cve/CVE-2022-3623
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report
https://access.redhat.com/security/cve/CVE-2022-3625
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report
https://access.redhat.com/security/cve/CVE-2022-3628
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report
https://access.redhat.com/security/cve/CVE-2022-3707
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report
https://access.redhat.com/security/cve/CVE-2022-39188
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report
https://access.redhat.com/security/cve/CVE-2022-39189
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report
https://access.redhat.com/security/cve/CVE-2022-41218
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report
https://access.redhat.com/security/cve/CVE-2022-4129
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report
https://access.redhat.com/security/cve/CVE-2022-41674
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report
https://access.redhat.com/security/cve/CVE-2022-42703
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report
https://access.redhat.com/security/cve/CVE-2022-42720
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report
https://access.redhat.com/security/cve/CVE-2022-42721
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report
https://access.redhat.com/security/cve/CVE-2022-42722
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report
https://access.redhat.com/security/cve/CVE-2022-43750
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report
https://access.redhat.com/security/cve/CVE-2022-47929
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report
https://access.redhat.com/security/cve/CVE-2023-0394
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report
https://access.redhat.com/security/cve/CVE-2023-0461
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report
https://access.redhat.com/security/cve/CVE-2023-1195
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report
https://access.redhat.com/security/cve/CVE-2023-1582
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report
https://access.redhat.com/security/cve/CVE-2023-23454