CVE-2026-43261

arm64: Add support for TSV110 Spectre-BHB mitigation

MEDIUM

5.5

CVSS Score

Published: May 6, 2026 at 11:28 AM UTC

Updated: June 17, 2026 at 10:49 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: arm64: Add support for TSV110 Spectre-BHB mitigation The TSV110 processor is vulnerable to the Spectre-BHB (Branch History Buffer) attack, which can be exploited to leak information through branch prediction side channels. This commit adds the MIDR of TSV110 to the list for software mitigation.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v ≥ 4.14.275v ≥ 4.19.236v ≥ 4.9.310v ≥ 5.16.14v ≥ 5.4.1864.14.275 ≤ v < 4.154.19.236 ≤ v < 4.204.9.310 ≤ v < 4.105.10.105 ≤ v < 5.10.2525.11 ≤ v < 5.15.2025.15.28 ≤ v < 5.15.2025.16 ≤ v < 6.1.1655.16.14 ≤ v < 5.175.17 ≤ v < 6.1.1655.17 ≤ v < 6.12.755.17 ≤ v < 6.18.165.17 ≤ v < 6.19.65.17 ≤ v < 6.6.1285.17 ≤ v < 7.05.4.186 ≤ v < 5.56.13 ≤ v < 6.18.166.19 ≤ v < 6.19.66.2 ≤ v < 6.6.1286.7 ≤ v < 6.12.750b2bf1b37b5ebd90e69e30d8c2d6e1cd0c1f37b43e3904125fccd042fda24294624e8f66699fd06d4.14.275 4.19.236 4.9.3104bbfd0c280254b273c564767021bb9b0f945148e4dd8aae585a51a1d276911fe19096ad90144e9fe5.10.105 5.15.28 5.16.14 5.17 5.4.186558c303c9734af5a813739cd284879227f7297d29013fd4bc958b33c3b4d5a2eaf4ded9857600395c20d551744797000c4af993f7d59ef8c69732949e192c8baa69ac8a5585d61ac535aa1e5eb795e80

Vendor states this is fixed in 598c11dd4f4a9de31d854fcb9702f54c1c70f0d0 (fixed)

Vendor states this is fixed in 5dbe1f14359735fa50ba0dd4a496125b5bc7f422 (fixed)

Vendor states this is fixed in a8d0ad5d990b050a6db74218a34b5529085e16b8 (fixed)

Vendor states this is fixed in ad0c356cae164ed5dbd1f4cfd438e46faa5292cb (fixed)

Vendor states this is fixed in cccf96c49f61e47d9332d6a4d1c7fe9a2df44440 (fixed)

Vendor states this is fixed in e3baa5d4b361276efeb87b20d8beced451a7dbd5 (fixed)

Vendor states this is fixed in fd51d47fcacec3ca027eb65d8c44853d3b6cea95 (fixed)

Vendor states this is fixed in fd7e360845d331f542854d552469544182e61134 (fixed)

Affected range stops below 4.10, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.15, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.20, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 5.10.252 (unaffected)