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CVE-2021-46953— ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，该漏洞源于当固件属性无效而导致驱动程序探测失败时，GTDT 驱动程序会取消映射其之前映射的中断。

AI Predicted 4.3 Difficulty: Moderate EPSS 0.24% · P14

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux ca9ae5ec4ef0ed13833b03297ab319676965492c< c3385a9122f8db15b453e07bfc88117fce7f3724 affected
ca9ae5ec4ef0ed13833b03297ab319676965492c< 7b2162db1498c71962a4bb2f776fa4e76d4d305b affected
ca9ae5ec4ef0ed13833b03297ab319676965492c< 504632a3577a049dd9bb7aabae5b4476f9c586b4 affected
ca9ae5ec4ef0ed13833b03297ab319676965492c< e0f2d86481eaa83df33b0793f75212919db7a19d affected
ca9ae5ec4ef0ed13833b03297ab319676965492c< 42e69521ee1fa5abf21f478d147d06bbfe6bf6a8 affected
ca9ae5ec4ef0ed13833b03297ab319676965492c< 596e079c362ac17ed02aa1b99fdc444d62072a01 affected
ca9ae5ec4ef0ed13833b03297ab319676965492c< 1ecd5b129252249b9bc03d7645a7bda512747277 affected
4.12 affected
… +8 more rows
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I. Basic Information for CVE-2021-46953

Vulnerability Information
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Vulnerability Title
ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure When failing the driver probe because of invalid firmware properties, the GTDT driver unmaps the interrupt that it mapped earlier. However, it never checks whether the mapping of the interrupt actially succeeded. Even more, should the firmware report an illegal interrupt number that overlaps with the GIC SGI range, this can result in an IPI being unmapped, and subsequent fireworks (as reported by Dann Frazier). Rework the driver to have a slightly saner behaviour and actually check whether the interrupt has been mapped before unmapping things.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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，该漏洞源于当固件属性无效而导致驱动程序探测失败时，GTDT 驱动程序会取消映射其之前映射的中断。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux ca9ae5ec4ef0ed13833b03297ab319676965492c ~ c3385a9122f8db15b453e07bfc88117fce7f3724 -
Linux Linux 4.12 -

II. Public POCs for CVE-2021-46953

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III. Intelligence Information for CVE-2021-46953

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Other References for CVE-2021-46953 (7)

Same Patch Batch · Linux · 2024-02-27 · 67 CVEs total

CVE-2021-46911 9.8 CRITICAL ch_ktls: Fix kernel panic
CVE-2021-46955 8.2 HIGH openvswitch: fix stack OOB read while fragmenting IPv4 packets
CVE-2021-46963 7.8 HIGH scsi: qla2xxx: Fix crash in qla2xxx_mqueuecommand()
CVE-2021-46925 7.8 HIGH net/smc: fix kernel panic caused by race of smc_sock
CVE-2021-46929 7.8 HIGH sctp: use call_rcu to free endpoint
CVE-2021-46913 7.8 HIGH netfilter: nftables: clone set element expression template
CVE-2021-46973 7.8 HIGH net: qrtr: Avoid potential use after free in MHI send
CVE-2021-46936 7.8 HIGH net: fix use-after-free in tw_timer_handler
CVE-2021-46933 7.8 HIGH usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.
CVE-2021-46969 7.8 HIGH bus: mhi: core: Fix invalid error returning in mhi_queue
CVE-2021-46958 7.8 HIGH btrfs: fix race between transaction aborts and fsyncs leading to use-after-free
CVE-2021-46967 7.8 HIGH vhost-vdpa: fix vm_flags for virtqueue doorbell mapping
CVE-2021-46921 7.8 HIGH locking/qrwlock: Fix ordering in queued_write_lock_slowpath()
CVE-2021-46922 7.8 HIGH KEYS: trusted: Fix TPM reservation for seal/unseal
CVE-2021-46948 7.5 HIGH sfc: farch: fix TX queue lookup in TX event handling
CVE-2021-46960 7.5 HIGH cifs: Return correct error code from smb2_get_enc_key
CVE-2021-46912 7.3 HIGH net: Make tcp_allowed_congestion_control readonly in non-init netns
CVE-2021-46908 7.1 HIGH bpf: Use correct permission flag for mixed signed bounds arithmetic
CVE-2021-46974 7.1 HIGH bpf: Fix masking negation logic upon negative dst register
CVE-2021-46910 7.0 HIGH ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUG_KMAP_LOCAL is enabled

Showing top 20 of 67 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2021-46953

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