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416baaa9-dc9f-4396-8d5f-8c081fb06d67NVD:CVE-2021-46908

HistoryFeb 27, 2024 - 7:15 a.m.

CVE-2021-46908

2024-02-2707:15:06

416baaa9-dc9f-4396-8d5f-8c081fb06d67

web.nvd.nist.gov

linux kernel

vulnerability

fixed

bpf

mixed signed bounds

arithmetic

spectre v1

masking mitigation

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.4

Confidence

High

EPSS

Percentile

5.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

bpf: Use correct permission flag for mixed signed bounds arithmetic

We forbid adding unknown scalars with mixed signed bounds due to the
spectre v1 masking mitigation. Hence this also needs bypass_spec_v1
flag instead of allow_ptr_leaks.

Affected configurations

Nvd

Node

linuxlinux_kernelRange5.8.0–5.10.32

linuxlinux_kernelRange5.11.0–5.11.16

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

References

git.kernel.org/stable/c/4ccdc6c6cae38b91c871293fb0ed8c6845a61b51

git.kernel.org/stable/c/4f3ff11204eac0ee23acf64deecb3bad7b0db0c6

git.kernel.org/stable/c/9601148392520e2e134936e76788fc2a6371e7be

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

5.4

Confidence

High

EPSS

Percentile

5.1%

JSON

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