CVE-2023-52993— x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
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I. Basic Information for CVE-2023-52993
Vulnerability Information
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Vulnerability Title
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL Baoquan reported that after triggering a crash the subsequent crash-kernel fails to boot about half of the time. It triggers a NULL pointer dereference in the periodic tick code. This happens because the legacy timer interrupt (IRQ0) is resent in software which happens in soft interrupt (tasklet) context. In this context get_irq_regs() returns NULL which leads to the NULL pointer dereference. The reason for the resend is a spurious APIC interrupt on the IRQ0 vector which is captured and leads to a resend when the legacy timer interrupt is enabled. This is wrong because the legacy PIC interrupts are level triggered and therefore should never be resent in software, but nothing ever sets the IRQ_LEVEL flag on those interrupts, so the core code does not know about their trigger type. Ensure that IRQ_LEVEL is set when the legacy PCI interrupts are set up.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未标记传统PIC中断为IRQ_LEVEL。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-52993
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Same Patch Batch · Linux · 2025-03-27 · 124 CVEs total
| CVE-2023-52983 | block, bfq: fix uaf for bfqq in bic_set_bfqq() | |
| CVE-2023-52998 | net: fec: Use page_pool_put_full_page when freeing rx buffers | |
| CVE-2023-52999 | net: fix UaF in netns ops registration error path | |
| CVE-2023-52997 | ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() | |
| CVE-2023-52996 | ipv4: prevent potential spectre v1 gadget in fib_metrics_match() | |
| CVE-2023-52995 | riscv/kprobe: Fix instruction simulation of JALR | |
| CVE-2023-52994 | acpi: Fix suspend with Xen PV | |
| CVE-2023-52992 | bpf: Skip task with pid=1 in send_signal_common() | |
| CVE-2023-52991 | net: fix NULL pointer in skb_segment_list | |
| CVE-2023-52989 | firewire: fix memory leak for payload of request subaction to IEC 61883-1 FCP region | |
| CVE-2023-52988 | ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() | |
| CVE-2023-52987 | ASoC: SOF: ipc4-mtrace: prevent underflow in sof_ipc4_priority_mask_dfs_write() | |
| CVE-2023-52986 | bpf, sockmap: Check for any of tcp_bpf_prots when cloning a listener | |
| CVE-2023-52985 | arm64: dts: imx8mm-verdin: Do not power down eth-phy | |
| CVE-2023-52984 | net: phy: dp83822: Fix null pointer access on DP83825/DP83826 devices | |
| CVE-2023-52982 | fscache: Use wait_on_bit() to wait for the freeing of relinquished volume | |
| CVE-2022-49761 | btrfs: always report error in run_one_delayed_ref() | |
| CVE-2022-49760 | mm/hugetlb: fix PTE marker handling in hugetlb_change_protection() | |
| CVE-2022-49759 | VMCI: Use threaded irqs instead of tasklets | |
| CVE-2023-52973 | vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF |
Showing top 20 of 124 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
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