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NVD / CVE Program· CNA Linux

CVE-2023-52750: arm64: Restrict CPU_BIG_ENDIAN to GNU as or LLVM IAS 15.x or newer

MediumCVSS 5.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.24% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 146a15b873353f8ac28dc281c139ff611a3c4848, 69e619d2fd056fe1f5d0adf01584f2da669e0d28, 936c9c10efaefaf1ab3ef020e1f8aaaaff1ad2f9.

Low priority for now. Upgrade to Linux Linux 146a15b873353f8ac28dc281c139ff611a3c4848, 69e619d2fd056fe1f5d0adf01584f2da669e0d28, 936c9c10efaefaf1ab3ef020e1f8aaaaff1ad2f9 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: arm64: Restrict CPU_BIG_ENDIAN to GNU as or LLVM IAS 15.x or newer Prior to LLVM 15.0.0, LLVM's integrated assembler would incorrectly byte-swap NOP when compiling for big-endian, and the resulting series of bytes happened to match the encoding of FNMADD S21, S30, S0, S0. This went unnoticed until commit: 34f66c4c4d5518c1 ("arm64: Use a positive cpucap for FP/SIMD") Prior to that commit, the kernel would always enable the use of FPSIMD early in boot when __cpu_setup() initialized CPACR_EL1, and so usage of FNMADD within the kernel was not detected, but could result in the corruption of user or kernel FPSIMD state. After that commit, the instructions happen to trap during boot prior to FPSIMD being detected and enabled, e.g. | Unhandled 64-bit el1h sync exception on CPU0, ESR 0x000000001fe00000 -- ASIMD | CPU: 0 PID: 0 Comm: swapper Not tainted 6.6.0-rc3-00013-g34f66c4c4d55 #1 | Hardware name: linux,dummy-virt (DT) | pstate: 400000c9 (nZcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) | pc : __pi_strcmp+0x1c/0x150 | lr : populate_properties+0xe4/0x254 | sp : ffffd014173d3ad0 | x29: ffffd014173d3af0 x28: fffffbfffddffcb8 x27: 0000000000000000 | x26: 0000000000000058 x25: fffffbfffddfe054 x24: 0000000000000008 | x23: fffffbfffddfe000 x22: fffffbfffddfe000 x21: fffffbfffddfe044 | x20: ffffd014173d3b70 x19: 0000000000000001 x18: 0000000000000005 | x17: 0000000000000010 x16: 0000000000000000 x15: 00000000413e7000 | x14: 0000000000000000 x13: 0000000000001bcc x12: 0000000000000000 | x11: 00000000d00dfeed x10: ffffd414193f2cd0 x9 : 0000000000000000 | x8 : 0101010101010101 x7 : ffffffffffffffc0 x6 : 0000000000000000 | x5 : 0000000000000000 x4 : 0101010101010101 x3 : 000000000000002a | x2 : 0000000000000001 x1 : ffffd014171f2988 x0 : fffffbfffddffcb8 | Kernel panic - not syncing: Unhandled exception | CPU: 0 PID: 0 Comm: swapper Not tainted 6.6.0-rc3-00013-g34f66c4c4d55 #1 | Hardware name: linux,dummy-virt (DT) | Call trace: | dump_backtrace+0xec/0x108 | show_stack+0x18/0x2c | dump_stack_lvl+0x50/0x68 | dump_stack+0x18/0x24 | panic+0x13c/0x340 | el1t_64_irq_handler+0x0/0x1c | el1_abort+0x0/0x5c | el1h_64_sync+0x64/0x68 | __pi_strcmp+0x1c/0x150 | unflatten_dt_nodes+0x1e8/0x2d8 | __unflatten_device_tree+0x5c/0x15c | unflatten_device_tree+0x38/0x50 | setup_arch+0x164/0x1e0 | start_kernel+0x64/0x38c | __primary_switched+0xbc/0xc4 Restrict CONFIG_CPU_BIG_ENDIAN to a known good assembler, which is either GNU as or LLVM's IAS 15.0.0 and newer, which contains the linked commit.

Published
May 21, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 15th percentile
CWE
—

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.7affected
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before d08a1e75253b4e19ae290b1c35349f12cfcebc0aaffected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 936c9c10efaefaf1ab3ef020e1f8aaaaff1ad2f9affected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before ef0224ee5399ea8a46bc07dc6c6494961ed5fdd2affected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before bd31e534721ab95ef237020fe6995c899ffdf21aaffected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 69e619d2fd056fe1f5d0adf01584f2da669e0d28affected · git
    • 0be7320a635c2e434e8b67e0e9474a85ceb421c4 and later · before 146a15b873353f8ac28dc281c139ff611a3c4848affected · git
    • before 3.7not affected · semver
    • 5.10.202 and later · up to and including 5.10.*not affected · semver
    • 5.15.140 and later · up to and including 5.15.*not affected · semver
Affected versions · NVD (5)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 5.10.202
  • linux linux kernel5.11 and later · before 5.15.140
  • linux linux kernel5.16 and later · before 6.1.64
  • linux linux kernel6.2 and later · before 6.5.13
  • linux linux kernel6.6 and later · before 6.6.3

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.64-16.1.64-1
Debian:13linuxbefore 6.6.8-16.6.8-1
openSUSE:Leap 15.6dtb-aarch64before 6.4.0-150600.23.14.16.4.0-150600.23.14.1
openSUSE:Leap 15.6kernel-64kbbefore 6.4.0-150600.23.14.16.4.0-150600.23.14.1
openSUSE:Leap 15.6kernel-azurebefore 6.4.0-150600.8.8.26.4.0-150600.8.8.2
openSUSE:Leap 15.6kernel-debugbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-defaultbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-default-basebefore 6.4.0-150600.23.14.2.150600.12.4.36.4.0-150600.23.14.2.150600.12.4.3
openSUSE:Leap 15.6kernel-docsbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-kvmsmallbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-obs-buildbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-obs-qabefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-sourcebefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-source-azurebefore 6.4.0-150600.8.8.26.4.0-150600.8.8.2
openSUSE:Leap 15.6kernel-symsbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
openSUSE:Leap 15.6kernel-syms-azurebefore 6.4.0-150600.8.8.16.4.0-150600.8.8.1
openSUSE:Leap 15.6kernel-zfcpdumpbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
SUSE:Linux Enterprise Live Patching 15 SP6kernel-livepatch-SLE15-SP6_Update_2before 1-150600.13.3.21-150600.13.3.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-64kbbefore 6.4.0-150600.23.14.16.4.0-150600.23.14.1
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-defaultbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-default-basebefore 6.4.0-150600.23.14.2.150600.12.4.36.4.0-150600.23.14.2.150600.12.4.3
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-sourcebefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
SUSE:Linux Enterprise Module for Basesystem 15 SP6kernel-zfcpdumpbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2
SUSE:Linux Enterprise Module for Development Tools 15 SP6kernel-docsbefore 6.4.0-150600.23.14.26.4.0-150600.23.14.2

+5

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe…KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2023-52748May 21, 2024 · f2fs: avoid format-overflow warning
    31Monitor
  • ← EarlierCVE-2023-52749May 21, 2024 · spi: Fix null dereference on suspend
    18Monitor
  • Later →CVE-2023-52752May 21, 2024 · smb: client: fix use-after-free bug in cifs_debug_data_proc_show()
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux146a15b873353f8ac28dc281c139ff611a3c4848Vendor (CNA)
Linux Linux69e619d2fd056fe1f5d0adf01584f2da669e0d28Vendor (CNA)
Linux Linux936c9c10efaefaf1ab3ef020e1f8aaaaff1ad2f9Vendor (CNA)
Linux Linuxbd31e534721ab95ef237020fe6995c899ffdf21aVendor (CNA)
Linux Linuxd08a1e75253b4e19ae290b1c35349f12cfcebc0aVendor (CNA)
Linux Linuxef0224ee5399ea8a46bc07dc6c6494961ed5fdd2Vendor (CNA)
debian:linux6.1.64-1 · Debian:12Package registry (OSV)
opensuse:dtb-aarch646.4.0-150600.23.14.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-64kb6.4.0-150600.23.14.1 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-debug6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-default-base6.4.0-150600.23.14.2.150600.12.4.3 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-docs6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-kvmsmall6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-build6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-obs-qa6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-source6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-syms6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
opensuse:kernel-zfcpdump6.4.0-150600.23.14.2 · openSUSE:Leap 15.6Package registry (OSV)
suse:kernel-64kb6.4.0-150600.23.14.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-azure6.4.0-150600.8.8.2 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-default6.4.0-150600.23.14.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-default-base6.4.0-150600.23.14.2.150600.12.4.3 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-docs6.4.0-150600.23.14.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-livepatch-SLE15-SP6_Update_21-150600.13.3.2 · SUSE:Linux Enterprise Live Patching 15 SP6Package registry (OSV)
suse:kernel-obs-build6.4.0-150600.23.14.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-source6.4.0-150600.23.14.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP6Package registry (OSV)
suse:kernel-source-azure6.4.0-150600.8.8.2 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)
suse:kernel-syms6.4.0-150600.23.14.2 · SUSE:Linux Enterprise Module for Development Tools 15 SP6Package registry (OSV)
suse:kernel-syms-azure6.4.0-150600.8.8.1 · SUSE:Linux Enterprise Module for Public Cloud 15 SP6Package registry (OSV)

+1

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

—

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records