Ubuntu 26.04 Kernel Security Advisory USN-8726-1 CVE-2025

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Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-gke: Linux kernel for Google Container Engine (GKE) systems - linux-realtime: Linux kernel for Real-time systems - linux-aws-7.0: Linux kernel for Amazon Web Services (AWS) systems - linux-hwe-7.0: Linux hardware enablement (HWE) kernel Details: It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This... Read the Full Advisory

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gke: Linux kernel for Google Container Engine (GKE) systems

- linux-realtime: Linux kernel for Real-time systems

- linux-aws-7.0: Linux kernel for Amazon Web Services (AWS) systems

- linux-hwe-7.0: Linux hardware enablement (HWE) kernel

It was discovered that some Arm processors could complete a broadcast

translation lookaside buffer (TLB) invalidation before memory writes made

through the invalidated translation were globally observed. A local

attacker could possibly use this to write to memory after permission to do

so had been revoked, bypassing memory protections or escalating privileges.

Several security issues were discovered in the Linux kernel.

An attacker could possibly use these to compromise the system.

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS linux-image-7.0.0-1006-gke 7.0.0-1006.7 linux-image-7.0.0-1006-gke-64k 7.0.0-1006.7 linux-image-7.0.0-1011-gcp 7.0.0-1011.11 linux-image-7.0.0-1011-gcp-64k 7.0.0-1011.11 linux-image-7.0.0-1012-aws 7.0.0-1012.12 linux-image-7.0.0-1012-aws-64k 7.0.0-1012.12 linux-image-7.0.0-31-generic 7.0.0-31.31 linux-image-7.0.0-31-generic-64k 7.0.0-31.31 linux-image-7.0.0-31-realtime 7.0.0-31.31.1 linux-image-7.0.0-31-realtime-64k 7.0.0-31.31.1 linux-image-aws 7.0.0-1012.12 linux-image-aws-64k 7.0.0-1012.12 linux-image-aws-64k-7.0 7.0.0-1012.12 linux-image-aws-7.0 7.0.0-1012.12 linux-image-gcp 7.0.0-1011.11 linux-image-gcp-64k 7.0.0-1011.11 linux-image-gcp-64k-7.0 7.0.0-1011.11 linux-image-gcp-7.0 7.0.0-1011.11 linux-image-generic 7.0.0-31.31 linux-image-generic-64k 7.0.0-31.31 linux-image-generic-64k-7.0 7.0.0-31.31 linux-image-generic-64k-hwe-26.04 7.0.0-31.31 linux-image-generic-7.0 7.0.0-31.31 linux-image-generic-hwe-26.04 7.0.0-31.31 linux-image-gke 7.0.0-1006.7 linux-image-gke-64k 7.0.0-1006.7 linux-image-gke-64k-7.0 7.0.0-1006.7 linux-image-gke-64k-hwe-26.04 7.0.0-1006.7 linux-image-gke-7.0 7.0.0-1006.7 linux-image-gke-hwe-26.04 7.0.0-1006.7 linux-image-realtime 7.0.0-31.31.1 linux-image-realtime-64k 7.0.0-31.31.1 linux-image-realtime-64k-7.0 7.0.0-31.31.1 linux-image-realtime-64k-hwe-26.04 7.0.0-31.31.1 linux-image-realtime-7.0 7.0.0-31.31.1 linux-image-realtime-hwe-26.04 7.0.0-31.31.1 linux-image-virtual 7.0.0-31.31 linux-image-virtual-7.0 7.0.0-31.31 linux-image-virtual-hwe-26.04 7.0.0-31.31 Ubuntu 24.04 LTS linux-image-7.0.0-1012-aws 7.0.0-1012.12~24.04.1 linux-image-7.0.0-1012-aws-64k 7.0.0-1012.12~24.04.1 linux-image-7.0.0-31-generic 7.0.0-31.31~24.04.1 linux-image-7.0.0-31-generic-64k 7.0.0-31.31~24.04.1 linux-image-aws 7.0.0-1012.12~24.04.1 linux-image-aws-64k 7.0.0-1012.12~24.04.1 linux-image-aws-64k-7.0 7.0.0-1012.12~24.04.1 linux-image-aws-7.0 7.0.0-1012.12~24.04.1 linux-image-generic-64k-7.0 7.0.0-31.31~24.04.1 linux-image-generic-64k-hwe-24.04 7.0.0-31.31~24.04.1 linux-image-generic-7.0 7.0.0-31.31~24.04.1 linux-image-generic-hwe-24.04 7.0.0-31.31~24.04.1 linux-image-virtual-7.0 7.0.0-31.31~24.04.1 linux-image-virtual-hwe-24.04 7.0.0-31.31~24.04.1 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well.

CVE-2025-10263, CVE-2026-52908, CVE-2026-52909, CVE-2026-52910,

CVE-2026-52917, CVE-2026-52929, CVE-2026-52930, CVE-2026-52935,

CVE-2026-52938, CVE-2026-52939, CVE-2026-52940, CVE-2026-52942,

CVE-2026-52947, CVE-2026-52948, CVE-2026-53132, CVE-2026-53133,

CVE-2026-53134, CVE-2026-53135, CVE-2026-53136, CVE-2026-53137,

CVE-2026-53138, CVE-2026-53139, CVE-2026-53140, CVE-2026-53141,

CVE-2026-53142, CVE-2026-53143, CVE-2026-53144, CVE-2026-53145,

CVE-2026-53146, CVE-2026-53147, CVE-2026-53148, CVE-2026-53149,

CVE-2026-53150, CVE-2026-53152, CVE-2026-53153, CVE-2026-53154,

CVE-2026-53155, CVE-2026-53156, CVE-2026-53157, CVE-2026-53158,

CVE-2026-53159, CVE-2026-53160, CVE-2026-53161, CVE-2026-53162,

CVE-2026-53163, CVE-2026-53164, CVE-2026-53165, CVE-2026-53167,

CVE-2026-53168, CVE-2026-53169, CVE-2026-53170, CVE-2026-53171,

CVE-2026-53172, CVE-2026-53173, CVE-2026-53177, CVE-2026-53178,

CVE-2026-53179, CVE-2026-53180, CVE-2026-53181, CVE-2026-53182,

CVE-2026-53183, CVE-2026-53184, CVE-2026-53185, CVE-2026-53187,

CVE-2026-53188, CVE-2026-53189, CVE-2026-53190, CVE-2026-53191,

CVE-2026-53192, CVE-2026-53193, CVE-2026-53194, CVE-2026-53195,

CVE-2026-53196, CVE-2026-53197, CVE-2026-53198, CVE-2026-53199,

CVE-2026-53200, CVE-2026-53201, CVE-2026-53202, CVE-2026-53203,

CVE-2026-53204, CVE-2026-53205, CVE-2026-53206, CVE-2026-53207,

CVE-2026-53208, CVE-2026-53209, CVE-2026-53210, CVE-2026-53211,

CVE-2026-53213, CVE-2026-53214, CVE-2026-53217, CVE-2026-53218,

CVE-2026-53219, CVE-2026-53220, CVE-2026-53222, CVE-2026-53223,

CVE-2026-53226, CVE-2026-53227, CVE-2026-53229, CVE-2026-53230,

CVE-2026-53231, CVE-2026-53232, CVE-2026-53233, CVE-2026-53234,

CVE-2026-53235, CVE-2026-53236, CVE-2026-53237, CVE-2026-53238,

CVE-2026-53239, CVE-2026-53240, CVE-2026-53241, CVE-2026-53242,

CVE-2026-53243, CVE-2026-53244, CVE-2026-53245, CVE-2026-53248,

CVE-2026-53249, CVE-2026-53250, CVE-2026-53251, CVE-2026-53252,

CVE-2026-53253, CVE-2026-53254, CVE-2026-53255, CVE-2026-53256,

CVE-2026-53257, CVE-2026-53258, CVE-2026-53259, CVE-2026-53261,

CVE-2026-53262, CVE-2026-53263, CVE-2026-53264, CVE-2026-53265,

CVE-2026-53266, CVE-2026-53267, CVE-2026-53268, CVE-2026-53269,

CVE-2026-53270, CVE-2026-53271, CVE-2026-53272, CVE-2026-53273,

CVE-2026-53274, CVE-2026-53275, CVE-2026-53276, CVE-2026-53325,

CVE-2026-53326, CVE-2026-53327, CVE-2026-53328, CVE-2026-53329,

CVE-2026-53330, CVE-2026-53331, CVE-2026-53332, CVE-2026-53333,

CVE-2026-53334, CVE-2026-53335, CVE-2026-53336, CVE-2026-53337,

CVE-2026-53338, CVE-2026-53339, CVE-2026-53340, CVE-2026-53341,

CVE-2026-53342, CVE-2026-53343, CVE-2026-53344, CVE-2026-53345,

CVE-2026-53346, CVE-2026-53347, CVE-2026-53348, CVE-2026-53349,

CVE-2026-53350, CVE-2026-53351, CVE-2026-53352, CVE-2026-53353,

CVE-2026-53354, CVE-2026-53355, CVE-2026-53356, CVE-2026-53361,

CVE-2026-53362, CVE-2026-53363, CVE-2026-53366, CVE-2026-53381,

CVE-2026-53382, CVE-2026-53383, CVE-2026-53384, CVE-2026-53385,

CVE-2026-53386, CVE-2026-53387, CVE-2026-53388, CVE-2026-53389,

CVE-2026-53390, CVE-2026-53391, CVE-2026-53392, CVE-2026-53393,

CVE-2026-53394, CVE-2026-53395, CVE-2026-53396, CVE-2026-53397,

CVE-2026-53398, CVE-2026-53399, CVE-2026-53400, CVE-2026-53401,

CVE-2026-53402, CVE-2026-53403, CVE-2026-63794, CVE-2026-63795,

CVE-2026-63796, CVE-2026-63797, CVE-2026-63798, CVE-2026-63799,

CVE-2026-63800, CVE-2026-63801, CVE-2026-63802, CVE-2026-63803,

CVE-2026-63804, CVE-2026-63805, CVE-2026-63806, CVE-2026-63807,

CVE-2026-63808, CVE-2026-63809, CVE-2026-63810, CVE-2026-63811,

CVE-2026-63812, CVE-2026-63813, CVE-2026-63814, CVE-2026-63815,

CVE-2026-63816, CVE-2026-63817, CVE-2026-63818, CVE-2026-63819,

CVE-2026-63820, CVE-2026-63821, CVE-2026-63822, CVE-2026-63823,

CVE-2026-63824, CVE-2026-63825, CVE-2026-63826, CVE-2026-63827,

CVE-2026-63828, CVE-2026-63829, CVE-2026-63830, CVE-2026-63831,

CVE-2026-63832, CVE-2026-63833, CVE-2026-63834, CVE-2026-63835,

CVE-2026-63836, CVE-2026-63867, CVE-2026-63868, CVE-2026-63869,

CVE-2026-63870, CVE-2026-63871, CVE-2026-63873, CVE-2026-63874,

CVE-2026-64187, CVE-2026-64188, CVE-2026-64189, CVE-2026-64191,

CVE-2026-64192, CVE-2026-64205, CVE-2026-64206, CVE-2026-64207,

CVE-2026-64244, CVE-2026-64245, CVE-2026-64246, CVE-2026-64247,

CVE-2026-64249, CVE-2026-64251, CVE-2026-64253, CVE-2026-64254,

CVE-2026-64255, CVE-2026-64256, CVE-2026-64258, CVE-2026-64259,

CVE-2026-64260, CVE-2026-64261, CVE-2026-64262, CVE-2026-64263,

CVE-2026-64264, CVE-2026-64265, CVE-2026-64266, CVE-2026-64267,

CVE-2026-64268, CVE-2026-64269, CVE-2026-64270, CVE-2026-64271,

CVE-2026-64272, CVE-2026-64273, CVE-2026-64274, CVE-2026-64275,

CVE-2026-64276, CVE-2026-64277, CVE-2026-64278, CVE-2026-64279,

CVE-2026-64280, CVE-2026-64282, CVE-2026-64283, CVE-2026-64284,

CVE-2026-64285, CVE-2026-64286, CVE-2026-64287, CVE-2026-64288,

CVE-2026-64289, CVE-2026-64290, CVE-2026-64291, CVE-2026-64292,

CVE-2026-64293, CVE-2026-64294, CVE-2026-64295, CVE-2026-64296,

CVE-2026-64297, CVE-2026-64298, CVE-2026-64299, CVE-2026-64300,

CVE-2026-64301, CVE-2026-64302, CVE-2026-64303, CVE-2026-64304,

CVE-2026-64305, CVE-2026-64306, CVE-2026-64307, CVE-2026-64308,

CVE-2026-64309, CVE-2026-64310, CVE-2026-64312, CVE-2026-64313,

CVE-2026-64314, CVE-2026-64315, CVE-2026-64316, CVE-2026-64317,

CVE-2026-64318, CVE-2026-64319, CVE-2026-64320, CVE-2026-64321,

CVE-2026-64322, CVE-2026-64323, CVE-2026-64324, CVE-2026-64325,

CVE-2026-64326, CVE-2026-64327, CVE-2026-64328, CVE-2026-64329,

CVE-2026-64330, CVE-2026-64331, CVE-2026-64332, CVE-2026-64333,

CVE-2026-64334, CVE-2026-64335, CVE-2026-64336, CVE-2026-64337,

CVE-2026-64338, CVE-2026-64339, CVE-2026-64340, CVE-2026-64341,

CVE-2026-64342, CVE-2026-64343, CVE-2026-64344, CVE-2026-64345,

CVE-2026-64346, CVE-2026-64347, CVE-2026-64348, CVE-2026-64350,

CVE-2026-64351, CVE-2026-64352, CVE-2026-64353, CVE-2026-64354,

CVE-2026-64355, CVE-2026-64356, CVE-2026-64357, CVE-2026-64358,

CVE-2026-64359, CVE-2026-64360, CVE-2026-64361, CVE-2026-64362,

CVE-2026-64363, CVE-2026-64364, CVE-2026-64365, CVE-2026-64366,

CVE-2026-64367, CVE-2026-64368, CVE-2026-64369, CVE-2026-64370,

CVE-2026-64371, CVE-2026-64372, CVE-2026-64373, CVE-2026-64374,

CVE-2026-64375, CVE-2026-64376, CVE-2026-64377, CVE-2026-64378,

CVE-2026-64379, CVE-2026-64380, CVE-2026-64381, CVE-2026-64382,

CVE-2026-64383, CVE-2026-64384, CVE-2026-64385, CVE-2026-64386,

CVE-2026-64387, CVE-2026-64388, CVE-2026-64389, CVE-2026-64390,

CVE-2026-64391, CVE-2026-64392, CVE-2026-64393, CVE-2026-64394,

CVE-2026-64395, CVE-2026-64396, CVE-2026-64397, CVE-2026-64398,

CVE-2026-64399, CVE-2026-64400, CVE-2026-64401, CVE-2026-64402,

CVE-2026-64403, CVE-2026-64404, CVE-2026-64405, CVE-2026-64406,

CVE-2026-64407, CVE-2026-64408, CVE-2026-64409, CVE-2026-64410,

CVE-2026-64411, CVE-2026-64412, CVE-2026-64413, CVE-2026-64414,

CVE-2026-64415, CVE-2026-64416, CVE-2026-64417, CVE-2026-64418,

CVE-2026-64419, CVE-2026-64420, CVE-2026-64421, CVE-2026-64422,

CVE-2026-64423, CVE-2026-64424, CVE-2026-64425, CVE-2026-64426,

CVE-2026-64428, CVE-2026-64429, CVE-2026-64430, CVE-2026-64432,

CVE-2026-64433, CVE-2026-64434, CVE-2026-64435, CVE-2026-64436,

CVE-2026-64438, CVE-2026-64439, CVE-2026-64440, CVE-2026-64441,

CVE-2026-64442, CVE-2026-64443, CVE-2026-64444, CVE-2026-64445,

CVE-2026-64446, CVE-2026-64447, CVE-2026-64448, CVE-2026-64449,

CVE-2026-64450, CVE-2026-64451, CVE-2026-64452, CVE-2026-64453,

CVE-2026-64454, CVE-2026-64455, CVE-2026-64456, CVE-2026-64457,

CVE-2026-64458, CVE-2026-64459, CVE-2026-64460, CVE-2026-64461,

CVE-2026-64462, CVE-2026-64463, CVE-2026-64464, CVE-2026-64465,

CVE-2026-64466, CVE-2026-64467, CVE-2026-64468, CVE-2026-64469,

CVE-2026-64470, CVE-2026-64471, CVE-2026-64472, CVE-2026-64473,

CVE-2026-64474, CVE-2026-64475, CVE-2026-64476, CVE-2026-64477,

CVE-2026-64478, CVE-2026-64479, CVE-2026-64480, CVE-2026-64481,

CVE-2026-64482, CVE-2026-64483, CVE-2026-64484, CVE-2026-64485,

CVE-2026-64486, CVE-2026-64487, CVE-2026-64488, CVE-2026-64489,

CVE-2026-64490, CVE-2026-64491, CVE-2026-64492, CVE-2026-64493,

CVE-2026-64494, CVE-2026-64495, CVE-2026-64496, CVE-2026-64497,

CVE-2026-64499, CVE-2026-64500, CVE-2026-64501, CVE-2026-64502,

CVE-2026-64503, CVE-2026-64504, CVE-2026-64505, CVE-2026-64507,

CVE-2026-64508, CVE-2026-64509, CVE-2026-64510, CVE-2026-64511,

CVE-2026-64512, CVE-2026-64513, CVE-2026-64514, CVE-2026-64529,

CVE-2026-64536, CVE-2026-64556, CVE-2026-64588, CVE-2026-64589,

CVE-2026-64590, CVE-2026-64591, CVE-2026-64592, CVE-2026-64593,

CVE-2026-64594, CVE-2026-64596, CVE-2026-64597, CVE-2026-64598,

CVE-2026-64599, CVE-2026-64600, CVE-2026-64601, CVE-2026-64602,

CVE-2026-64603, CVE-2026-64604, CVE-2026-68084, CVE-2026-68085,

CVE-2026-68087, CVE-2026-68088, CVE-2026-68089, CVE-2026-68090,

CVE-2026-68091, CVE-2026-68092, CVE-2026-68459, CVE-2026-68460,

CVE-2026-68461, CVE-2026-74584, CVE-2026-80591

Ubuntu Security Notice USN-8726-1

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