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):
* kernel: IB/hfi1: Fix sdma.h tx->num_descs off-by-one error (CVE-2024-26766)
* kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem (CVE-2025-38022)
* kernel: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution (CVE-2025-38024)
* kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation (CVE-2025-38415)
* kernel: Linux kernel: Denial of Service in ATM CLIP module via infinite recursion (CVE-2025-38459)
* kernel: Linux kernel: Denial of Service via out-of-bounds read in USB configuration parsing (CVE-2025-39760)
* kernel: mptcp: fix race condition in mptcp_schedule_work() (CVE-2025-40258)
* kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. (CVE-2025-40271)
* kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling (CVE-2025-40322)
* kernel: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() (CVE-2022-50865)
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.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 8 | kernel-rt | 0:4.18.0-553.100.1.rt7.441.el8_10 |
Vulnerabilities 10
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Critical 9.8
mptcp: fix race condition in mptcp_schedule_work()
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race condition in mptcp_schedule_work() syzbot reported use-after-free in mptcp_schedule_work() [1] Issue here is that mptcp_schedule_work() schedules a work, then gets a refcount …
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High 7.8
IB/hfi1: Fix sdma.h tx->num_descs off-by-one error
In the Linux kernel, the following vulnerability has been resolved: IB/hfi1: Fix sdma.h tx->num_descs off-by-one error Unfortunately the commit `fd8958efe877` introduced another error causing the `descs` array to overflow. This reults in further crashes easil…
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High 7.8
RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_addr…
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High 7.8
RDMA/rxe: Fix slab-use-after-free Read in rxe_queue_cleanup bug
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix slab-use-after-free Read in rxe_queue_cleanup bug Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x7d/0xa0 lib/dump_stack.c:120 print_address_descri…
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High 7.8CVE-2025-40271 Public exploit
fs/proc: fix uaf in proc_readdir_de()
In the Linux kernel, the following vulnerability has been resolved: fs/proc: fix uaf in proc_readdir_de() Pde is erased from subdir rbtree through rb_erase(), but not set the node to EMPTY, which may result in uaf access. We should use RB_CLEAR_NODE() set the…
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High 7.5
tcp: fix a signed-integer-overflow bug in tcp_add_backlog()
In the Linux kernel, the following vulnerability has been resolved: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() The type of sk_rcvbuf and sk_sndbuf in struct sock is int, and in tcp_add_backlog(), the variable limit is caculated by adding sk_r…
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High 7.1
fbdev: bitblit: bound-check glyph index in bit_putcs*
In the Linux kernel, the following vulnerability has been resolved: fbdev: bitblit: bound-check glyph index in bit_putcs* bit_putcs_aligned()/unaligned() derived the glyph pointer from the character value masked by 0xff/0x1ff, which may exceed the actual font…
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Unscored —
Squashfs: check return result of sb_min_blocksize
In the Linux kernel, the following vulnerability has been resolved: Squashfs: check return result of sb_min_blocksize Syzkaller reports an "UBSAN: shift-out-of-bounds in squashfs_bio_read" bug. Syzkaller forks multiple processes which after mounting the Squas…
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Unscored —
atm: clip: Fix infinite recursive call of clip_push().
In the Linux kernel, the following vulnerability has been resolved: atm: clip: Fix infinite recursive call of clip_push(). syzbot reported the splat below. [0] This happens if we call ioctl(ATMARP_MKIP) more than once. During the first call, clip_mkip() sets …
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Unscored —
usb: core: config: Prevent OOB read in SS endpoint companion parsing
In the Linux kernel, the following vulnerability has been resolved: usb: core: config: Prevent OOB read in SS endpoint companion parsing usb_parse_ss_endpoint_companion() checks descriptor type before length, enabling a potentially odd read outside of the buf…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2273187
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2373326
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2373354
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2383404
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2383487
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2394601
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2418876
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2419837
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2419902
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2426226