Ubuntu 20.04 Linux Kernel Critical Privilege Escalation Issues USN-8576

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Several security issues were fixed in the Linux kernel. Software Description: - linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra systems Details: Maxim Suhanov discovered that the NTFS file system implementation in the Linux kernel did not properly validate file name length in certain situations, leading to an out-of-bounds read. An attacker could use this to construct a malicious NTFS image that, when mounted and operated on, could expose sensitive information (kernel memory). (CVE-2023-45896) It was discovered that some AMD processors did not properly clear data in the floating point divider unit during speculative execution. A local attacker could use this to expose sensitive information. (CVE-2025-54505) It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. (CVE-202... Read the Full Advisory

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-nvidia-tegra-5.15: Linux kernel for NVIDIA Tegra systems

Maxim Suhanov discovered that the NTFS file system implementation in the

Linux kernel did not properly validate file name length in certain

situations, leading to an out-of-bounds read. An attacker could use this to

construct a malicious NTFS image that, when mounted and operated on, could

expose sensitive information (kernel memory). (CVE-2023-45896)

It was discovered that some AMD processors did not properly clear data in

the floating point divider unit during speculative execution. A local

attacker could use this to expose sensitive information. (CVE-2025-54505)

It was discovered that some AMD Zen 2 processors did not properly isolate

shared resources in the operation cache. A local attacker could possibly

use this issue to corrupt instructions executed at a higher privilege

level, resulting in privilege escalation. (CVE-202...

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS linux-image-5.15.0-1064-nvidia-tegra 5.15.0-1064.66~20.04.1 Available with Ubuntu Pro linux-image-5.15.0-1064-nvidia-tegra-rt 5.15.0-1064.66~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra 5.15.0.1064.66~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra-5.15 5.15.0.1064.66~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra-rt 5.15.0.1064.66~20.04.1 Available with Ubuntu Pro linux-image-nvidia-tegra-rt-5.15 5.15.0.1064.66~20.04.1 Available with Ubuntu Pro 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-2022-49803, CVE-2022-49961, CVE-2022-50073, CVE-2022-50116,

CVE-2022-50552, CVE-2023-45896, CVE-2023-52682, CVE-2023-52737,

CVE-2023-53545, CVE-2023-53596, CVE-2023-53629, CVE-2024-27389,

CVE-2024-35865, CVE-2024-36898, CVE-2024-36922, CVE-2024-41079,

CVE-2024-46715, CVE-2024-46770, CVE-2024-47809, CVE-2024-50012,

CVE-2024-53221, CVE-2024-56557, CVE-2024-56584, CVE-2024-56657,

CVE-2024-56719, CVE-2024-56727, CVE-2025-21712, CVE-2025-21739,

CVE-2025-21863, CVE-2025-22107, CVE-2025-23141, CVE-2025-37786,

CVE-2025-38006, CVE-2025-38105, CVE-2025-38192, CVE-2025-38250,

CVE-2025-38562, CVE-2025-38626, CVE-2025-38659, CVE-2025-38710,

CVE-2025-39748, CVE-2025-39764, CVE-2025-40005, CVE-2025-40016,

CVE-2025-40103, CVE-2025-40323, CVE-2025-54505, CVE-2025-54518,

CVE-2025-68206, CVE-2025-68239, CVE-2025-68256, CVE-2025-68307,

CVE-2025-68358, CVE-2025-71150, CVE-2025-71161, CVE-2025-71221,

CVE-2025-71232, CVE-2025-71235, CVE-2025-71236, CVE-2025-71237,

CVE-2025-71238, CVE-2025-71239, CVE-2025-71265, CVE-2025-71266,

CVE-2025-71267, CVE-2025-71274, CVE-2025-71287, CVE-2025-71292,

CVE-2025-71304, CVE-2026-23031, CVE-2026-23066, CVE-2026-23100,

CVE-2026-23113, CVE-2026-23141, CVE-2026-23157, CVE-2026-23169,

CVE-2026-23204, CVE-2026-23220, CVE-2026-23221, CVE-2026-23222,

CVE-2026-23227, CVE-2026-23228, CVE-2026-23229, CVE-2026-23234,

CVE-2026-23235, CVE-2026-23236, CVE-2026-23237, CVE-2026-23238,

CVE-2026-23241, CVE-2026-23242, CVE-2026-23243, CVE-2026-23253,

CVE-2026-23266, CVE-2026-23270, CVE-2026-23277, CVE-2026-23279,

CVE-2026-23281, CVE-2026-23286, CVE-2026-23289, CVE-2026-23290,

CVE-2026-23291, CVE-2026-23293, CVE-2026-23296, CVE-2026-23298,

CVE-2026-23300, CVE-2026-23303, CVE-2026-23304, CVE-2026-23307,

CVE-2026-23312, CVE-2026-23318, CVE-2026-23324, CVE-2026-23335,

CVE-2026-23336, CVE-2026-23339, CVE-2026-23340, CVE-2026-23352,

CVE-2026-23356, CVE-2026-23357, CVE-2026-23359, CVE-2026-23362,

CVE-2026-23365, CVE-2026-23367, CVE-2026-23368, CVE-2026-23370,

CVE-2026-23372, CVE-2026-23379, CVE-2026-23381, CVE-2026-23382,

CVE-2026-23388, CVE-2026-23391, CVE-2026-23392, CVE-2026-23395,

CVE-2026-23396, CVE-2026-23397, CVE-2026-23398, CVE-2026-23399,

CVE-2026-23401, CVE-2026-23420, CVE-2026-23434, CVE-2026-23438,

CVE-2026-23439, CVE-2026-23442, CVE-2026-23444, CVE-2026-23446,

CVE-2026-23452, CVE-2026-23454, CVE-2026-23456, CVE-2026-23457,

CVE-2026-23458, CVE-2026-23460, CVE-2026-23462, CVE-2026-23463,

CVE-2026-23474, CVE-2026-31393, CVE-2026-31396, CVE-2026-31399,

CVE-2026-31400, CVE-2026-31405, CVE-2026-31407, CVE-2026-31408,

CVE-2026-31409, CVE-2026-31411, CVE-2026-31415, CVE-2026-31416,

CVE-2026-31417, CVE-2026-31421, CVE-2026-31422, CVE-2026-31423,

CVE-2026-31424, CVE-2026-31425, CVE-2026-31427, CVE-2026-31428,

CVE-2026-31433, CVE-2026-31446, CVE-2026-31447, CVE-2026-31450,

CVE-2026-31452, CVE-2026-31454, CVE-2026-31455, CVE-2026-31464,

CVE-2026-31466, CVE-2026-31467, CVE-2026-31469, CVE-2026-31473,

CVE-2026-31476, CVE-2026-31480, CVE-2026-31483, CVE-2026-31485,

CVE-2026-31489, CVE-2026-31494, CVE-2026-31495, CVE-2026-31497,

CVE-2026-31498, CVE-2026-31507, CVE-2026-31508, CVE-2026-31509,

CVE-2026-31510, CVE-2026-31512, CVE-2026-31515, CVE-2026-31518,

CVE-2026-31521, CVE-2026-31522, CVE-2026-31523, CVE-2026-31524,

CVE-2026-31532, CVE-2026-31540, CVE-2026-31545, CVE-2026-31546,

CVE-2026-31549, CVE-2026-31550, CVE-2026-31551, CVE-2026-31552,

CVE-2026-31555, CVE-2026-31565, CVE-2026-31570, CVE-2026-31576,

CVE-2026-31577, CVE-2026-31578, CVE-2026-31580, CVE-2026-31581,

CVE-2026-31583, CVE-2026-31585, CVE-2026-31586, CVE-2026-31588,

CVE-2026-31590, CVE-2026-31594, CVE-2026-31596, CVE-2026-31597,

CVE-2026-31598, CVE-2026-31599, CVE-2026-31602, CVE-2026-31603,

CVE-2026-31605, CVE-2026-31615, CVE-2026-31616, CVE-2026-31617,

CVE-2026-31618, CVE-2026-31619, CVE-2026-31622, CVE-2026-31623,

CVE-2026-31624, CVE-2026-31625, CVE-2026-31626, CVE-2026-31627,

CVE-2026-31628, CVE-2026-31629, CVE-2026-31630, CVE-2026-31634,

CVE-2026-31642, CVE-2026-31651, CVE-2026-31656, CVE-2026-31658,

CVE-2026-31660, CVE-2026-31661, CVE-2026-31662, CVE-2026-31664,

CVE-2026-31665, CVE-2026-31667, CVE-2026-31670, CVE-2026-31671,

CVE-2026-31672, CVE-2026-31673, CVE-2026-31674, CVE-2026-31676,

CVE-2026-31679, CVE-2026-31680, CVE-2026-31681, CVE-2026-31683,

CVE-2026-31684, CVE-2026-31686, CVE-2026-31687, CVE-2026-31694,

CVE-2026-31695, CVE-2026-31696, CVE-2026-31697, CVE-2026-31698,

CVE-2026-31699, CVE-2026-31701, CVE-2026-31716, CVE-2026-31720,

CVE-2026-31721, CVE-2026-31726, CVE-2026-31728, CVE-2026-31737,

CVE-2026-31738, CVE-2026-31747, CVE-2026-31748, CVE-2026-31749,

CVE-2026-31751, CVE-2026-31752, CVE-2026-31754, CVE-2026-31755,

CVE-2026-31756, CVE-2026-31758, CVE-2026-31759, CVE-2026-31761,

CVE-2026-31762, CVE-2026-31763, CVE-2026-31770, CVE-2026-31773,

CVE-2026-31778, CVE-2026-31780, CVE-2026-31781, CVE-2026-31788,

CVE-2026-43014, CVE-2026-43015, CVE-2026-43020, CVE-2026-43024,

CVE-2026-43026, CVE-2026-43027, CVE-2026-43028, CVE-2026-43030,

CVE-2026-43032, CVE-2026-43035, CVE-2026-43040, CVE-2026-43041,

CVE-2026-43043, CVE-2026-43046, CVE-2026-43047, CVE-2026-43050,

CVE-2026-43051, CVE-2026-43052, CVE-2026-43054, CVE-2026-43058,

CVE-2026-43060, CVE-2026-43061, CVE-2026-43062, CVE-2026-43065,

CVE-2026-43066, CVE-2026-43068, CVE-2026-43069, CVE-2026-43074,

CVE-2026-43075, CVE-2026-43076, CVE-2026-43079, CVE-2026-43080,

CVE-2026-43085, CVE-2026-43089, CVE-2026-43093, CVE-2026-43098,

CVE-2026-43099, CVE-2026-43103, CVE-2026-43104, CVE-2026-43105,

CVE-2026-43110, CVE-2026-43111, CVE-2026-43112, CVE-2026-43113,

CVE-2026-43123, CVE-2026-43124, CVE-2026-43130, CVE-2026-43132,

CVE-2026-43133, CVE-2026-43134, CVE-2026-43135, CVE-2026-43136,

CVE-2026-43139, CVE-2026-43140, CVE-2026-43141, CVE-2026-43145,

CVE-2026-43147, CVE-2026-43148, CVE-2026-43149, CVE-2026-43152,

CVE-2026-43156, CVE-2026-43158, CVE-2026-43159, CVE-2026-43163,

CVE-2026-43168, CVE-2026-43171, CVE-2026-43180, CVE-2026-43182,

CVE-2026-43183, CVE-2026-43184, CVE-2026-43187, CVE-2026-43190,

CVE-2026-43194, CVE-2026-43196, CVE-2026-43202, CVE-2026-43203,

CVE-2026-43205, CVE-2026-43206, CVE-2026-43207, CVE-2026-43209,

CVE-2026-43211, CVE-2026-43218, CVE-2026-43223, CVE-2026-43225,

CVE-2026-43226, CVE-2026-43227, CVE-2026-43230, CVE-2026-43231,

CVE-2026-43232, CVE-2026-43233, CVE-2026-43236, CVE-2026-43241,

CVE-2026-43242, CVE-2026-43246, CVE-2026-43251, CVE-2026-43255,

CVE-2026-43257, CVE-2026-43261, CVE-2026-43262, CVE-2026-43264,

CVE-2026-43266, CVE-2026-43268, CVE-2026-43269, CVE-2026-43270,

CVE-2026-43273, CVE-2026-43275, CVE-2026-43277, CVE-2026-43279,

CVE-2026-43281, CVE-2026-43283, CVE-2026-43287, CVE-2026-43289,

CVE-2026-43291, CVE-2026-43295, CVE-2026-43296, CVE-2026-43302,

CVE-2026-43312, CVE-2026-43313, CVE-2026-43314, CVE-2026-43315,

CVE-2026-43316, CVE-2026-43324, CVE-2026-43327, CVE-2026-43328,

CVE-2026-43329, CVE-2026-43333, CVE-2026-43334, CVE-2026-43336,

CVE-2026-43339, CVE-2026-43340, CVE-2026-43342, CVE-2026-43343,

CVE-2026-43357, CVE-2026-43363, CVE-2026-43365, CVE-2026-43370,

CVE-2026-43373, CVE-2026-43380, CVE-2026-43381, CVE-2026-43382,

CVE-2026-43386, CVE-2026-43387, CVE-2026-43405, CVE-2026-43411,

CVE-2026-43420, CVE-2026-43425, CVE-2026-43426, CVE-2026-43427,

CVE-2026-43428, CVE-2026-43429, CVE-2026-43430, CVE-2026-43432,

CVE-2026-43439, CVE-2026-43445, CVE-2026-43449, CVE-2026-43450,

CVE-2026-43451, CVE-2026-43452, CVE-2026-43453, CVE-2026-43458,

CVE-2026-43459, CVE-2026-43466, CVE-2026-43469, CVE-2026-43472,

CVE-2026-43473, CVE-2026-43475, CVE-2026-43476, CVE-2026-43480,

CVE-2026-43484, CVE-2026-43496, CVE-2026-43497, CVE-2026-43502,

CVE-2026-45834, CVE-2026-45835, CVE-2026-45836, CVE-2026-45838,

CVE-2026-45839, CVE-2026-45840, CVE-2026-45841, CVE-2026-45842,

CVE-2026-45843, CVE-2026-45844, CVE-2026-45846, CVE-2026-45847,

CVE-2026-45848, CVE-2026-45852, CVE-2026-45856, CVE-2026-45857,

CVE-2026-45860, CVE-2026-45862, CVE-2026-45864, CVE-2026-45866,

CVE-2026-45867, CVE-2026-45868, CVE-2026-45869, CVE-2026-45870,

CVE-2026-45871, CVE-2026-45873, CVE-2026-45875, CVE-2026-45879,

CVE-2026-45883, CVE-2026-45885, CVE-2026-45890, CVE-2026-45891,

CVE-2026-45899, CVE-2026-45902, CVE-2026-45904, CVE-2026-45911,

CVE-2026-45912, CVE-2026-45915, CVE-2026-45916, CVE-2026-45919,

CVE-2026-45920, CVE-2026-45924, CVE-2026-45935, CVE-2026-45936,

CVE-2026-45941, CVE-2026-45946, CVE-2026-45948, CVE-2026-45954,

CVE-2026-45956, CVE-2026-45958, CVE-2026-45960, CVE-2026-45964,

CVE-2026-45965, CVE-2026-45968, CVE-2026-45969, CVE-2026-45970,

CVE-2026-45974, CVE-2026-45978, CVE-2026-45983, CVE-2026-45984,

CVE-2026-45985, CVE-2026-45986, CVE-2026-45987, CVE-2026-45994,

CVE-2026-46002, CVE-2026-46004, CVE-2026-46006, CVE-2026-46009,

CVE-2026-46015, CVE-2026-46018, CVE-2026-46019, CVE-2026-46022,

CVE-2026-46023, CVE-2026-46024, CVE-2026-46027, CVE-2026-46033,

CVE-2026-46037, CVE-2026-46040, CVE-2026-46044, CVE-2026-46046,

CVE-2026-46047, CVE-2026-46049, CVE-2026-46050, CVE-2026-46051,

CVE-2026-46053, CVE-2026-46062, CVE-2026-46064, CVE-2026-46070,

CVE-2026-46072, CVE-2026-46077, CVE-2026-46080, CVE-2026-46082,

CVE-2026-46088, CVE-2026-46098, CVE-2026-46099, CVE-2026-46101,

CVE-2026-46102, CVE-2026-46107, CVE-2026-46108, CVE-2026-46112,

CVE-2026-46120, CVE-2026-46122, CVE-2026-46123, CVE-2026-46124,

CVE-2026-46127, CVE-2026-46128, CVE-2026-46132, CVE-2026-46133,

CVE-2026-46137, CVE-2026-46146, CVE-2026-46149, CVE-2026-46150,

CVE-2026-46151, CVE-2026-46161, CVE-2026-46163, CVE-2026-46167,

CVE-2026-46168, CVE-2026-46172, CVE-2026-46174, CVE-2026-46177,

CVE-2026-46178, CVE-2026-46184, CVE-2026-46186, CVE-2026-46187,

CVE-2026-46189, CVE-2026-46197, CVE-2026-46198, CVE-2026-46205,

CVE-2026-46206, CVE-2026-46209, CVE-2026-46212, CVE-2026-46214,

CVE-2026-46219, CVE-2026-46220, CVE-2026-46227, CVE-2026-46230,

CVE-2026-46231, CVE-2026-46233, CVE-2026-46234, CVE-2026-46236,

CVE-2026-46238, CVE-2026-46249, CVE-2026-46250, CVE-2026-46253,

CVE-2026-46259, CVE-2026-46267, CVE-2026-46270, CVE-2026-46273,

CVE-2026-46274, CVE-2026-46275, CVE-2026-46285, CVE-2026-46294,

CVE-2026-46301, CVE-2026-46303, CVE-2026-46304, CVE-2026-46307,

CVE-2026-46319, CVE-2026-46328, CVE-2026-52911, CVE-2026-52912,

CVE-2026-52914, CVE-2026-52915, CVE-2026-52916, CVE-2026-52919,

CVE-2026-52920, CVE-2026-52921, CVE-2026-52922, CVE-2026-52925,

CVE-2026-52926, CVE-2026-52931, CVE-2026-52954, CVE-2026-52955,

CVE-2026-52957, CVE-2026-52958, CVE-2026-52962, CVE-2026-52963,

CVE-2026-52969, CVE-2026-52970, CVE-2026-52982, CVE-2026-52984,

CVE-2026-52985, CVE-2026-52986, CVE-2026-52992, CVE-2026-52993,

CVE-2026-52995, CVE-2026-52998, CVE-2026-52999, CVE-2026-53001,

CVE-2026-53002, CVE-2026-53003, CVE-2026-53004, CVE-2026-53006,

CVE-2026-53011, CVE-2026-53012, CVE-2026-53016, CVE-2026-53021,

CVE-2026-53022, CVE-2026-53023, CVE-2026-53037, CVE-2026-53039,

CVE-2026-53040, CVE-2026-53041, CVE-2026-53043, CVE-2026-53045,

CVE-2026-53046, CVE-2026-53047, CVE-2026-53048, CVE-2026-53049,

CVE-2026-53050, CVE-2026-53059, CVE-2026-53060, CVE-2026-53061,

CVE-2026-53062, CVE-2026-53064, CVE-2026-53065, CVE-2026-53068,

CVE-2026-53069, CVE-2026-53071, CVE-2026-53072, CVE-2026-53073,

CVE-2026-53074, CVE-2026-53075, CVE-2026-53077, CVE-2026-53082,

CVE-2026-53088, CVE-2026-53093, CVE-2026-53096, CVE-2026-53112,

CVE-2026-53128, CVE-2026-53130, CVE-2026-53287, CVE-2026-53291,

CVE-2026-53294, CVE-2026-53295, CVE-2026-53296, CVE-2026-53304,

CVE-2026-53306, CVE-2026-53309, CVE-2026-53320, CVE-2026-53369,

CVE-2026-53379, CVE-2026-63860, CVE-2026-63865, CVE-2026-64018,

CVE-2026-64032, CVE-2026-64033, CVE-2026-64034, CVE-2026-64039,

CVE-2026-64046, CVE-2026-64047, CVE-2026-64055, CVE-2026-64056,

CVE-2026-64083, CVE-2026-64084, CVE-2026-64085, CVE-2026-64086,

CVE-2026-64087, CVE-2026-64088, CVE-2026-64089, CVE-2026-64096,

CVE-2026-64102, CVE-2026-64103, CVE-2026-64113, CVE-2026-64114,

CVE-2026-64115, CVE-2026-64125, CVE-2026-64133, CVE-2026-64135,

CVE-2026-64153, CVE-2026-64155, CVE-2026-64164, CVE-2026-64165,

CVE-2026-64166, CVE-2026-64168, CVE-2026-64173, CVE-2026-64174,

CVE-2026-64177, CVE-2026-64178, CVE-2026-64179, CVE-2026-64185

Ubuntu Security Notice USN-8576-1

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